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https://github.com/fofolee/uTools-Manuals.git
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2502 lines
112 KiB
HTML
2502 lines
112 KiB
HTML
<div class="header">
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<div class="subTitle">
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javax.imageio.stream
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</div>
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<h2 class="title" title="Class ImageInputStreamImpl">Class ImageInputStreamImpl</h2>
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</div><div class="contentContainer">
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<ul class="inheritance">
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<li><a href="../../../java/lang/Object.html" title="class in java.lang">java.lang.Object</a></li>
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<li>
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<ul class="inheritance">
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<li>javax.imageio.stream.ImageInputStreamImpl</li>
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</ul> </li>
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</ul>
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<div class="description">
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<ul class="blockList">
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<li class="blockList">
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<dl>
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<dt>
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All Implemented Interfaces:
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</dt>
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<dd>
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<span><a href="../../../java/io/Closeable.html" title="java.io中的接口">Closeable</a> ， <a href="../../../java/io/DataInput.html" title="java.io中的接口">DataInput</a> ， <a href="../../../java/lang/AutoCloseable.html" title="java.lang中的接口">AutoCloseable</a> ， <a href="../../../javax/imageio/stream/ImageInputStream.html" title="javax.imageio.stream中的接口">ImageInputStream</a></span>
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</dd>
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</dl>
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<dl>
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<dt>
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已知直接子类：
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</dt>
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<dd>
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<span><a href="../../../javax/imageio/stream/FileCacheImageInputStream.html" title="javax.imageio.stream中的类">FileCacheImageInputStream</a> ， <a href="../../../javax/imageio/stream/FileImageInputStream.html" title="javax.imageio.stream中的类">FileImageInputStream</a> ， <a href="../../../javax/imageio/stream/ImageOutputStreamImpl.html" title="javax.imageio.stream中的类">ImageOutputStreamImpl</a> ， <a href="../../../javax/imageio/stream/MemoryCacheImageInputStream.html" title="javax.imageio.stream中的类">MemoryCacheImageInputStream</a></span>
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</dd>
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</dl>
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<hr/> <br/> <pre>public abstract class <span class="typeNameLabel">ImageInputStreamImpl</span>
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extends <a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>
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implements <a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></pre>
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<div class="block">
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<span>抽象类实现<code>ImageInputStream</code>接口。</span>
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<span>该类旨在减少子类必须实现的方法的数量。</span>
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<p> <span>特别地，该类处理大部分或全部字节顺序解释，缓冲，标记/复位，丢弃，关闭和处理的细节。</span> </p>
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</div> </li>
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</ul>
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</div>
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<div class="summary">
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<ul class="blockList">
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<li class="blockList">
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<!-- =========== FIELD SUMMARY =========== -->
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<ul class="blockList">
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<li class="blockList"><a name="field.summary">
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<!-- --> </a> <h3>Field Summary</h3>
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Field Summary table, listing fields, and an explanation">
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<caption>
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<span>Fields</span>
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<span class="tabEnd"> </span>
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</caption>
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<tbody>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colLast" scope="col">Field and Description</th>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><code>protected int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#bitOffset">bitOffset</a></span></code>
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<div class="block">
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流内的当前位偏移。
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</div> </td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>protected <a href="../../../java/nio/ByteOrder.html" title="class in java.nio">ByteOrder</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#byteOrder">byteOrder</a></span></code>
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<div class="block">
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作为枚举类
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<code>java.nio.ByteOrder</code>的实例的流的字节顺序，其中
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<code>ByteOrder.BIG_ENDIAN</code>指示网络字节顺序和
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<code>ByteOrder.LITTLE_ENDIAN</code>表示相反的顺序。
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</div> </td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><code>protected long</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#flushedPos">flushedPos</a></span></code>
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<div class="block">
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可以丢弃数据的位置。
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</div> </td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>protected long</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#streamPos">streamPos</a></span></code>
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<div class="block">
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流内当前读取的位置。
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</div> </td>
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</tr>
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</tbody>
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</table> </li>
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</ul>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<ul class="blockList">
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<li class="blockList"><a name="constructor.summary">
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<!-- --> </a> <h3>构造方法摘要</h3>
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Constructor Summary table, listing constructors, and an explanation">
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<caption>
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<span>构造方法</span>
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<span class="tabEnd"> </span>
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</caption>
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<tbody>
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<tr>
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<th class="colOne" scope="col">Constructor and Description</th>
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</tr>
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<tr class="altColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#ImageInputStreamImpl--">ImageInputStreamImpl</a></span>()</code>
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<div class="block">
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构造一个
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<code>ImageInputStreamImpl</code> 。
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</div> </td>
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</tr>
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</tbody>
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</table> </li>
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</ul>
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<!-- ========== METHOD SUMMARY =========== -->
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<ul class="blockList">
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<li class="blockList"><a name="method.summary">
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<!-- --> </a> <h3>方法摘要</h3>
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Method Summary table, listing methods, and an explanation">
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<caption>
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<span class="activeTableTab" id="t0"><span>所有方法</span><span class="tabEnd"> </span></span>
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<span class="tableTab" id="t2"><span><a href="javascript:show(2);">接口方法</a></span><span class="tabEnd"> </span></span>
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<span class="tableTab" id="t3"><span><a href="javascript:show(4);">抽象方法</a></span><span class="tabEnd"> </span></span>
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<span class="tableTab" id="t4"><span><a href="javascript:show(8);">具体的方法</a></span><span class="tabEnd"> </span></span>
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</caption>
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||
<tbody>
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||
<tr>
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||
<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colLast" scope="col">Method and Description</th>
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</tr>
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<tr class="altColor" id="i0">
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<td class="colFirst"><code>protected void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#checkClosed--">checkClosed</a></span>()</code>
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<div class="block">
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如果流已关闭，则抛出一个
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<code>IOException</code> 。
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</div> </td>
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</tr>
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<tr class="rowColor" id="i1">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#close--">close</a></span>()</code>
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<div class="block">
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||
关闭流。
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</div> </td>
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||
</tr>
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<tr class="altColor" id="i2">
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<td class="colFirst"><code>protected void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#finalize--">finalize</a></span>()</code>
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<div class="block">
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在垃圾收集之前完成此对象。
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</div> </td>
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</tr>
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<tr class="rowColor" id="i3">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#flush--">flush</a></span>()</code>
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<div class="block">
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在当前流位置之前丢弃流的初始位置。
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</div> </td>
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</tr>
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<tr class="altColor" id="i4">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#flushBefore-long-">flushBefore</a></span>(long pos)</code>
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<div class="block">
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在指示的位置之前丢弃流的初始部分。
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</div> </td>
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</tr>
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<tr class="rowColor" id="i5">
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#getBitOffset--">getBitOffset</a></span>()</code>
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<div class="block">
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返回当前的位偏移量，为0到7之间的整数，包括0和7。
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</div> </td>
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||
</tr>
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||
<tr class="altColor" id="i6">
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<td class="colFirst"><code><a href="../../../java/nio/ByteOrder.html" title="class in java.nio">ByteOrder</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#getByteOrder--">getByteOrder</a></span>()</code>
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<div class="block">
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||
作为
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<code>java.nio.ByteOrder</code>枚举的实例，返回从该流读取数据值的字节顺序。
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</div> </td>
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||
</tr>
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||
<tr class="rowColor" id="i7">
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<td class="colFirst"><code>long</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#getFlushedPosition--">getFlushedPosition</a></span>()</code>
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||
<div class="block">
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||
返回可以执行搜索的流中的最早位置。
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||
</div> </td>
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||
</tr>
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||
<tr class="altColor" id="i8">
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<td class="colFirst"><code>long</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#getStreamPosition--">getStreamPosition</a></span>()</code>
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<div class="block">
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返回流的当前字节位置。
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</div> </td>
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</tr>
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||
<tr class="rowColor" id="i9">
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<td class="colFirst"><code>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#isCached--">isCached</a></span>()</code>
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<div class="block">
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默认实现返回false。
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||
</div> </td>
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||
</tr>
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||
<tr class="altColor" id="i10">
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<td class="colFirst"><code>boolean</code></td>
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||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#isCachedFile--">isCachedFile</a></span>()</code>
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||
<div class="block">
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||
默认实现返回false。
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||
</div> </td>
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||
</tr>
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||
<tr class="rowColor" id="i11">
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||
<td class="colFirst"><code>boolean</code></td>
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||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#isCachedMemory--">isCachedMemory</a></span>()</code>
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||
<div class="block">
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||
默认实现返回false。
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||
</div> </td>
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||
</tr>
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||
<tr class="altColor" id="i12">
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||
<td class="colFirst"><code>long</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#length--">length</a></span>()</code>
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||
<div class="block">
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||
返回
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||
<code>-1L</code>以表示该流具有未知长度。
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||
</div> </td>
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||
</tr>
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||
<tr class="rowColor" id="i13">
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<td class="colFirst"><code>void</code></td>
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||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#mark--">mark</a></span>()</code>
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||
<div class="block">
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||
将当前流位置推送到标记位置的堆栈。
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||
</div> </td>
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||
</tr>
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||
<tr class="altColor" id="i14">
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<td class="colFirst"><code>abstract int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#read--">read</a></span>()</code>
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<div class="block">
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||
从流中读取一个字节，并将其作为从0到255之间的
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<code>int</code>返回。
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||
</div> </td>
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||
</tr>
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||
<tr class="rowColor" id="i15">
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#read-byte:A-">read</a></span>(byte[] b)</code>
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||
<div class="block">
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||
一个方便的方法，调用
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<code>read(b, 0, b.length)</code> 。
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||
</div> </td>
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||
</tr>
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||
<tr class="altColor" id="i16">
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||
<td class="colFirst"><code>abstract int</code></td>
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||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#read-byte:A-int-int-">read</a></span>(byte[] b, int off, int len)</code>
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||
<div class="block">
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||
从流中读取最多
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||
<code>len</code>个字节，并将它们存储在
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||
<code>b</code>从索引
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||
<code>off</code>开始。
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||
</div> </td>
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||
</tr>
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||
<tr class="rowColor" id="i17">
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<td class="colFirst"><code>int</code></td>
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||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readBit--">readBit</a></span>()</code>
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||
<div class="block">
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||
从流中读取一个位，并将其作为
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<code>int</code>返回，值为
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<code>0</code>或
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<code>1</code> 。
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||
</div> </td>
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||
</tr>
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||
<tr class="altColor" id="i18">
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||
<td class="colFirst"><code>long</code></td>
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||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readBits-int-">readBits</a></span>(int numBits)</code>
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||
<div class="block">
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||
从流读取一个bitstring，并将其作为
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||
<code>long</code>返回，第一位读取成为输出的最高有效位。
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||
</div> </td>
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||
</tr>
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||
<tr class="rowColor" id="i19">
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||
<td class="colFirst"><code>boolean</code></td>
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||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readBoolean--">readBoolean</a></span>()</code>
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||
<div class="block">
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||
从流读取一个字节，如果非零，则返回
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||
<code>boolean</code>值
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<code>true</code> ，否则为
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||
<code>false</code> 。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i20">
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||
<td class="colFirst"><code>byte</code></td>
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||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readByte--">readByte</a></span>()</code>
|
||
<div class="block">
|
||
从流中读取一个字节，并以
|
||
<code>byte</code>值返回。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i21">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readBytes-javax.imageio.stream.IIOByteBuffer-int-">readBytes</a></span>(<a href="../../../javax/imageio/stream/IIOByteBuffer.html" title="class in javax.imageio.stream">IIOByteBuffer</a> buf, int len)</code>
|
||
<div class="block">
|
||
从流中读取最多
|
||
<code>len</code>个字节，并修改提供的
|
||
<code>IIOByteBuffer</code>以指示可能找到数据的字节数组，偏移量和长度。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i22">
|
||
<td class="colFirst"><code>char</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readChar--">readChar</a></span>()</code>
|
||
<div class="block">
|
||
相当于
|
||
<code>readUnsignedShort</code> ，除了使用
|
||
<code>char</code>数据类型返回结果。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i23">
|
||
<td class="colFirst"><code>double</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readDouble--">readDouble</a></span>()</code>
|
||
<div class="block">
|
||
从流中读取8个字节，（在概念上）根据当前字节顺序连接它们，并将结果作为
|
||
<code>double</code>返回。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i24">
|
||
<td class="colFirst"><code>float</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFloat--">readFloat</a></span>()</code>
|
||
<div class="block">
|
||
从流中读取4个字节，（在概念上）根据当前字节顺序连接它们，并将结果作为
|
||
<code>float</code>返回。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i25">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-byte:A-">readFully</a></span>(byte[] b)</code>
|
||
<div class="block">
|
||
从流中读取
|
||
<code>b.length</code>个字节，并将其存储在
|
||
<code>b</code>从索引
|
||
<code>0</code>开始。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i26">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-byte:A-int-int-">readFully</a></span>(byte[] b, int off, int len)</code>
|
||
<div class="block">
|
||
从流中读取
|
||
<code>len</code>字节，并将它们存储在
|
||
<code>b</code>从索引
|
||
<code>off</code>开始。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i27">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-char:A-int-int-">readFully</a></span>(char[] c, int off, int len)</code>
|
||
<div class="block">
|
||
读取
|
||
<code>len</code>从根据当前字节顺序的流字符（无符号的16位整数），并将其存储到
|
||
<code>c</code>开始于索引
|
||
<code>off</code> 。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i28">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-double:A-int-int-">readFully</a></span>(double[] d, int off, int len)</code>
|
||
<div class="block">
|
||
读取
|
||
<code>len</code>根据当前字节顺序从流双打（64位IEEE双精度浮点值），并且将它们存储到
|
||
<code>d</code>开始于索引
|
||
<code>off</code> 。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i29">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-float:A-int-int-">readFully</a></span>(float[] f, int off, int len)</code>
|
||
<div class="block">
|
||
读取
|
||
<code>len</code>根据当前字节顺序从流浮标（32位IEEE单精度浮点值），并且将它们存储到
|
||
<code>f</code>开始于索引
|
||
<code>off</code> 。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i30">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-int:A-int-int-">readFully</a></span>(int[] i, int off, int len)</code>
|
||
<div class="block">
|
||
读取
|
||
<code>len</code>从根据当前字节顺序的流整数（带符号的32位整数），并将其存储到
|
||
<code>i</code>开始于索引
|
||
<code>off</code> 。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i31">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-long:A-int-int-">readFully</a></span>(long[] l, int off, int len)</code>
|
||
<div class="block">
|
||
读取
|
||
<code>len</code>从根据当前字节顺序的流long（有符号的64位整数），并将其存储到
|
||
<code>l</code>开始于索引
|
||
<code>off</code> 。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i32">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-short:A-int-int-">readFully</a></span>(short[] s, int off, int len)</code>
|
||
<div class="block">
|
||
读取
|
||
<code>len</code>从根据当前字节顺序的流短裤（带符号的16位整数），并将其存储到
|
||
<code>s</code>开始于索引
|
||
<code>off</code> 。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i33">
|
||
<td class="colFirst"><code>int</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readInt--">readInt</a></span>()</code>
|
||
<div class="block">
|
||
从流中读取4个字节，（在概念上）根据当前字节顺序连接它们，并以
|
||
<code>int</code>返回结果。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i34">
|
||
<td class="colFirst"><code><a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readLine--">readLine</a></span>()</code>
|
||
<div class="block">
|
||
从输入流读取下一行文本。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i35">
|
||
<td class="colFirst"><code>long</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readLong--">readLong</a></span>()</code>
|
||
<div class="block">
|
||
从流中读取8个字节，（在概念上）根据当前字节顺序连接它们，并将结果作为
|
||
<code>long</code>返回。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i36">
|
||
<td class="colFirst"><code>short</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readShort--">readShort</a></span>()</code>
|
||
<div class="block">
|
||
从流读取两个字节，（在概念上）根据当前字节顺序连接它们，并以
|
||
<code>short</code>值返回结果。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i37">
|
||
<td class="colFirst"><code>int</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readUnsignedByte--">readUnsignedByte</a></span>()</code>
|
||
<div class="block">
|
||
从流读取一个字节，并且（在概念上）将其转换为int，用
|
||
<code>0xff</code>屏蔽它，以便剥离任何符号扩展位，并将其作为
|
||
<code>byte</code>值返回。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i38">
|
||
<td class="colFirst"><code>long</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readUnsignedInt--">readUnsignedInt</a></span>()</code>
|
||
<div class="block">
|
||
从流中读取4个字节，（在概念上）根据当前字节顺序连接它们，将结果转换为长时间，使用
|
||
<code>0xffffffffL</code>屏蔽它，以便剥离任何符号扩展位，并将结果作为无符号
|
||
<code>long</code>值。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i39">
|
||
<td class="colFirst"><code>int</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readUnsignedShort--">readUnsignedShort</a></span>()</code>
|
||
<div class="block">
|
||
中读取两个字节从该流，并根据当前字节顺序（概念上）将其连接，将得到的值转换为
|
||
<code>int</code> ，口罩它
|
||
<code>0xffff</code>为了去掉所有符号扩展位，并返回结果以无符号
|
||
<code>int</code>价值。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i40">
|
||
<td class="colFirst"><code><a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readUTF--">readUTF</a></span>()</code>
|
||
<div class="block">
|
||
读取已使用
|
||
<a href="../../../java/io/DataInput.html#modified-utf-8">modified UTF-8</a>格式编码的字符串。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i41">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#reset--">reset</a></span>()</code>
|
||
<div class="block">
|
||
从标记位置的堆栈中重置当前流字节和位位置。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i42">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#seek-long-">seek</a></span>(long pos)</code>
|
||
<div class="block">
|
||
将当前流位置设置为所需位置。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i43">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#setBitOffset-int-">setBitOffset</a></span>(int bitOffset)</code>
|
||
<div class="block">
|
||
将位偏移设置为0到7之间的整数，包括0和7。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i44">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#setByteOrder-java.nio.ByteOrder-">setByteOrder</a></span>(<a href="../../../java/nio/ByteOrder.html" title="class in java.nio">ByteOrder</a> byteOrder)</code>
|
||
<div class="block">
|
||
设置用于将来从该流读取数据值的字节顺序。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i45">
|
||
<td class="colFirst"><code>int</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#skipBytes-int-">skipBytes</a></span>(int n)</code>
|
||
<div class="block">
|
||
通过致电
|
||
<code>seek(getStreamPosition() + n)</code>来
|
||
<code>seek(getStreamPosition() + n)</code>当前流的位置。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i46">
|
||
<td class="colFirst"><code>long</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#skipBytes-long-">skipBytes</a></span>(long n)</code>
|
||
<div class="block">
|
||
通过致电
|
||
<code>seek(getStreamPosition() + n)</code>当前的流位置。
|
||
</div> </td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object">
|
||
<!-- --> </a> <h3>Methods inherited from class java.lang.<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a></h3> <code><a href="../../../java/lang/Object.html#clone--">clone</a>, <a href="../../../java/lang/Object.html#equals-java.lang.Object-">equals</a>, <a href="../../../java/lang/Object.html#getClass--">getClass</a>, <a href="../../../java/lang/Object.html#hashCode--">hashCode</a>, <a href="../../../java/lang/Object.html#notify--">notify</a>, <a href="../../../java/lang/Object.html#notifyAll--">notifyAll</a>, <a href="../../../java/lang/Object.html#toString--">toString</a>, <a href="../../../java/lang/Object.html#wait--">wait</a>, <a href="../../../java/lang/Object.html#wait-long-">wait</a>, <a href="../../../java/lang/Object.html#wait-long-int-">wait</a></code></li>
|
||
</ul> </li>
|
||
</ul> </li>
|
||
</ul>
|
||
</div>
|
||
<div class="details">
|
||
<ul class="blockList">
|
||
<li class="blockList">
|
||
<!-- ============ FIELD DETAIL =========== -->
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="field.detail">
|
||
<!-- --> </a> <h3>字段详细信息</h3> <a name="byteOrder">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>byteOrder</h4> <pre>protected <a href="../../../java/nio/ByteOrder.html" title="class in java.nio">ByteOrder</a> byteOrder</pre>
|
||
<div class="block">
|
||
<span>作为枚举类<code>java.nio.ByteOrder</code>的实例的流的字节顺序，其中<code>ByteOrder.BIG_ENDIAN</code>指示网络字节顺序和<code>ByteOrder.LITTLE_ENDIAN</code>表示相反的顺序。</span>
|
||
<span>默认值为<code>ByteOrder.BIG_ENDIAN</code> 。</span>
|
||
</div> </li>
|
||
</ul> <a name="streamPos">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>streamPos</h4> <pre>protected long streamPos</pre>
|
||
<div class="block">
|
||
<span>流内当前读取的位置。</span>
|
||
<span>子类负责将此值保留为任何改写读取位置的方法。</span>
|
||
</div> </li>
|
||
</ul> <a name="bitOffset">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>bitOffset</h4> <pre>protected int bitOffset</pre>
|
||
<div class="block">
|
||
<span>流内的当前位偏移。</span>
|
||
<span>子类负责保持这个值的最新值，它们覆盖改变位偏移的任何方法。</span>
|
||
</div> </li>
|
||
</ul> <a name="flushedPos">
|
||
<!-- --> </a>
|
||
<ul class="blockListLast">
|
||
<li class="blockList"> <h4>flushedPos</h4> <pre>protected long flushedPos</pre>
|
||
<div class="block">
|
||
<span>可以丢弃数据的位置。</span>
|
||
<span>寻求更小的位置是不允许的。</span>
|
||
<span><code>flushedPos</code>将永远是> = 0。</span>
|
||
</div> </li>
|
||
</ul> </li>
|
||
</ul>
|
||
<!-- ========= CONSTRUCTOR DETAIL ======== -->
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="constructor.detail">
|
||
<!-- --> </a> <h3>构造方法详细信息</h3> <a name="ImageInputStreamImpl--">
|
||
<!-- --> </a>
|
||
<ul class="blockListLast">
|
||
<li class="blockList"> <h4>ImageInputStreamImpl</h4> <pre>public ImageInputStreamImpl()</pre>
|
||
<div class="block">
|
||
构造一个
|
||
<code>ImageInputStreamImpl</code> 。
|
||
</div> </li>
|
||
</ul> </li>
|
||
</ul>
|
||
<!-- ============ METHOD DETAIL ========== -->
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="method.detail">
|
||
<!-- --> </a> <h3>方法详细信息</h3> <a name="checkClosed--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>checkClosed</h4> <pre>protected final void checkClosed()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span>如果流已关闭，则抛出<code>IOException</code> 。</span>
|
||
<span>子类可以从需要流不被关闭的任何方法调用此方法。</span>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果流关闭。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="setByteOrder-java.nio.ByteOrder-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>setByteOrder</h4> <pre>public void setByteOrder(<a href="../../../java/nio/ByteOrder.html" title="class in java.nio">ByteOrder</a> byteOrder)</pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#setByteOrder-java.nio.ByteOrder-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>设置用于将来从该流读取数据值的字节顺序。</span>
|
||
<span>例如，如果以4字节整数读取，字节“0x01 0x02 0x03 0x04”的序列将以反向字节顺序使用网络字节顺序，值为“0x04030201”。</span>
|
||
<p> <span>枚举类<code>java.nio.ByteOrder</code>用于指定字节顺序。</span> <span><code>ByteOrder.BIG_ENDIAN</code>的值指定了所谓的大端或网元字节顺序，其中高位字节先到。</span> <span>摩托罗拉和Sparc处理器以这种格式存储数据，而英特尔处理器以相反的顺序存储数据<code>ByteOrder.LITTLE_ENDIAN</code> 。</span> </p>
|
||
<p> <span>字节顺序对从<code>readBits</code>方法（或<code>ImageOutputStream.writeBits</code>写的值）返回的结果没有影响。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#setByteOrder-java.nio.ByteOrder-">setByteOrder</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>byteOrder</code> -
|
||
<code>ByteOrder.BIG_ENDIAN</code>或
|
||
<code>java.nio.ByteOrder.LITTLE_ENDIAN</code> ，指示网络字节顺序或其反向将用于将来读取。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<span><a href="../../../java/nio/ByteOrder.html" title="java.nio中的类"><code>ByteOrder</code></a> ， <a href="../../../javax/imageio/stream/ImageInputStream.html#getByteOrder--"><code>ImageInputStream.getByteOrder()</code></a> ， <a href="../../../javax/imageio/stream/ImageInputStream.html#readBits-int-"><code>ImageInputStream.readBits(int)</code></a></span>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="getByteOrder--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>getByteOrder</h4> <pre>public <a href="../../../java/nio/ByteOrder.html" title="class in java.nio">ByteOrder</a> getByteOrder()</pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">描述从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#getByteOrder--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
作为
|
||
<code>java.nio.ByteOrder</code>枚举的实例，返回从该流读取数据值的字节顺序。
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#getByteOrder--">getByteOrder</a></code>在接口
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
<code>ByteOrder.BIG_ENDIAN</code>或
|
||
<code>ByteOrder.LITTLE_ENDIAN</code>中的一个，
|
||
<code>ByteOrder.BIG_ENDIAN</code>正在使用哪个字节顺序。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<span><a href="../../../java/nio/ByteOrder.html" title="java.nio中的类"><code>ByteOrder</code></a> ， <a href="../../../javax/imageio/stream/ImageInputStream.html#setByteOrder-java.nio.ByteOrder-"><code>ImageInputStream.setByteOrder(java.nio.ByteOrder)</code></a></span>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="read--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>read</h4> <pre>public abstract int read()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span>从该流读取单个字节，并返回它作为一个<code>int</code> 255之间0和如果达到EOF， <code>-1</code>被返回。</span>
|
||
<p> <span>子类必须为此方法提供一个实现。</span> <span>子类实现应该在退出之前更新流位置。</span> </p>
|
||
<p> <span>在发生读取之前，流内的位偏移必须重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#read--">read</a></code>在接口
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
流中下一个字节的值，如果达到EOF，
|
||
<code>-1</code> 。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果流已关闭。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="read-byte:A-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>read</h4> <pre>public int read(byte[] b)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span>一个方便的方法<code>read(b, 0, b.length)</code> 。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#read-byte:A-">read</a></code>在接口
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>b</code> - 要写入的字节数组。
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
实际读取的字节数，或
|
||
<code>-1</code>表示EOF。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/lang/NullPointerException.html" title="class in java.lang">NullPointerException</a></code> - 如果
|
||
<code>b</code>是
|
||
<code>null</code> 。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="read-byte:A-int-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>read</h4> <pre>public abstract int read(byte[] b,
|
||
int off,
|
||
int len)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span>读取到<code>len</code>从流字节，并将其存储到<code>b</code>开始于索引<code>off</code> 。</span>
|
||
<span>如果没有字节可以读取，因为已经到达流的末尾，则返回<code>-1</code> 。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移必须重置为零。</span> </p>
|
||
<p> <span>子类必须为此方法提供一个实现。</span> <span>子类实现应该在退出之前更新流位置。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#read-byte:A-int-int-">read</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>b</code> - 要写入的字节数组。
|
||
</dd>
|
||
<dd>
|
||
<code>off</code> - 起始位置在
|
||
<code>b</code>内写。
|
||
</dd>
|
||
<dd>
|
||
<code>len</code> - 要读取的最大字节数。
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
实际读取的字节数，或
|
||
<code>-1</code>表示EOF。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/lang/IndexOutOfBoundsException.html" title="class in java.lang">IndexOutOfBoundsException</a></code> - 如果
|
||
<code>off</code>为负数，
|
||
<code>len</code> ，否则为
|
||
<code>off + len</code> ，或
|
||
<code>off + len</code>大于
|
||
<code>b.length</code> 。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/lang/NullPointerException.html" title="class in java.lang">NullPointerException</a></code> - 如果
|
||
<code>b</code>是
|
||
<code>null</code> 。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readBytes-javax.imageio.stream.IIOByteBuffer-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readBytes</h4> <pre>public void readBytes(<a href="../../../javax/imageio/stream/IIOByteBuffer.html" title="class in javax.imageio.stream">IIOByteBuffer</a> buf,
|
||
int len)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readBytes-javax.imageio.stream.IIOByteBuffer-int-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从流中读取最多<code>len</code>个字节，并修改提供的<code>IIOByteBuffer</code>以指示可能找到数据的字节数组，偏移量和长度。</span>
|
||
<span>来电者不应尝试修改<code>IIOByteBuffer</code>找到的数据。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readBytes-javax.imageio.stream.IIOByteBuffer-int-">readBytes</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>buf</code> - 要修改的IIOByteBuffer对象。
|
||
</dd>
|
||
<dd>
|
||
<code>len</code> - 要阅读的最大数量为
|
||
<code>byte</code> 。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readBoolean--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readBoolean</h4> <pre>public boolean readBoolean()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readBoolean--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从该流读取一个字节，并返回一个<code>boolean</code>的值<code>true</code>如果是非零， <code>false</code> ，如果它是零。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readBoolean--">readBoolean</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readBoolean--">readBoolean</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
来自流的布尔值。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果达到流的结尾。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readByte--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readByte</h4> <pre>public byte readByte()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readByte--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从流中读取一个字节，并将其作为<code>byte</code>返回。</span>
|
||
<span>之间的字节值<code>0x00</code>和<code>0x7f</code>表示之间的整数值<code>0</code>和<code>127</code> 。</span>
|
||
<span><code>0x80</code>和<code>0xff</code>之间的值代表从<code>-128</code>到<code>/1</code> 。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readByte--">readByte</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readByte--">readByte</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
来自流的有符号字节值。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果达到流的结尾。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readUnsignedByte--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readUnsignedByte</h4> <pre>public int readUnsignedByte()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readUnsignedByte--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从流中读取一个字节，并从概念上将其转换为int，使用<code>0xff</code>进行掩码，以剥离任何符号扩展位，并将其作为<code>byte</code>返回。</span>
|
||
<p> <span>因此， <code>0x00</code>和<code>0x7f</code>之间的字节值简单地作为<code>0</code>和<code>127</code>之间的整数值返回。</span> <span><code>0x80</code>和<code>0xff</code>之间的值通常代表负数<code>byte</code> ，将被映射到<code>128</code>和<code>255</code>之间的正整数。</span> </p>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readUnsignedByte--">readUnsignedByte</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readUnsignedByte--">readUnsignedByte</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
来自流的无符号字节值。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果到达流的结尾。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readShort--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readShort</h4> <pre>public short readShort()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readShort--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从流中读取两个字节，（在概念上）根据当前字节顺序连接它们，并以<code>short</code>值返回结果。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readShort--">readShort</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readShort--">readShort</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
从流中签名的短值。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#getByteOrder--"><code>ImageInputStream.getByteOrder()</code></a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readUnsignedShort--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readUnsignedShort</h4> <pre>public int readUnsignedShort()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">描述从接口： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readUnsignedShort--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从流中读取两个字节，并且（在概念上）根据当前字节顺序连接它们，将结果值转换为int，使用<code>int</code>对其进行<code>0xffff</code> ，以剥离任何符号扩展名，并将结果作为无符号返回价值<code>int</code> 。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readUnsignedShort--">readUnsignedShort</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readUnsignedShort--">readUnsignedShort</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
来自流的无符号短值，作为int。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#getByteOrder--"><code>ImageInputStream.getByteOrder()</code></a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readChar--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readChar</h4> <pre>public char readChar()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readChar--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>相当于<code>readUnsignedShort</code> ，除了使用<code>char</code>数据类型返回结果。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readChar--">readChar</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readChar--">readChar</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
来自流的无符号字符值。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#readUnsignedShort--"><code>ImageInputStream.readUnsignedShort()</code></a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readInt--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readInt</h4> <pre>public int readInt()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readInt--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从流中读取4个字节，（在概念上）根据当前字节顺序连接它们，并以<code>int</code>返回结果。</span>
|
||
<p> <span>流内的位偏移被忽略，并被视为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readInt--">readInt</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readInt--">readInt</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
来自流的已签名的int值。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#getByteOrder--"><code>ImageInputStream.getByteOrder()</code></a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readUnsignedInt--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readUnsignedInt</h4> <pre>public long readUnsignedInt()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readUnsignedInt--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从流中读取4个字节，（在概念上）根据当前字节顺序连接它们，将结果转换为长时间，使用<code>0xffffffffL</code>屏蔽它，以便剥离任何符号扩展位，并将结果作为无符号<code>long</code>值。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readUnsignedInt--">readUnsignedInt</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
来自流的无符号int值，长久。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#getByteOrder--"><code>ImageInputStream.getByteOrder()</code></a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readLong--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readLong</h4> <pre>public long readLong()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readLong--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从流中读取8个字节，（在概念上）根据当前字节顺序连接它们，并将结果作为<code>long</code>返回。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readLong--">readLong</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readLong--">readLong</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
从流中签名的长值。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#getByteOrder--"><code>ImageInputStream.getByteOrder()</code></a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readFloat--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readFloat</h4> <pre>public float readFloat()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFloat--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从流中读取4个字节，（在概念上）根据当前字节顺序连接它们，并将结果作为<code>float</code>返回。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readFloat--">readFloat</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFloat--">readFloat</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
来自流的浮点值。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#getByteOrder--"><code>ImageInputStream.getByteOrder()</code></a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readDouble--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readDouble</h4> <pre>public double readDouble()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">描述从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readDouble--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从流中读取8个字节，（在概念上）根据当前字节顺序连接它们，并将结果作为<code>double</code>返回。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readDouble--">readDouble</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readDouble--">readDouble</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
来自流的双重值。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#getByteOrder--"><code>ImageInputStream.getByteOrder()</code></a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readLine--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readLine</h4> <pre>public <a href="../../../java/lang/String.html" title="class in java.lang">String</a> readLine()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readLine--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从输入流读取下一行文本。</span>
|
||
<span>它读取连续字节，将每个字节分别转换为字符，直到遇到行终止符或文件结尾;</span>
|
||
<span>读取的字符然后作为<code>String</code>返回。</span>
|
||
<span>请注意，由于此方法处理字节，它不支持输入完整的Unicode字符集。</span>
|
||
<p> <span>如果在甚至可以读取一个字节之前遇到文件结尾，则返回<code>null</code> 。</span> <span>否则，每个所读取字节被转换为类型<code>char</code>由零扩展。</span> <span>如果遇到<code>'\n'</code> '\n'，则会被丢弃，读取停止。</span> <span>如果遇到<code>'\r'</code> '\r'，则会被丢弃，如果以下字节转换为字符<code>'\n'</code> ，则也将被丢弃;</span> <span>阅读然后停止。</span> <span>如果在遇到任何一个字符<code>'\n'</code>和<code>'\r'</code>之前遇到文件结尾，则读取停止。</span> <span>一旦阅读已经停止，则返回一个<code>String</code> ，其中包含读取并且不被丢弃的所有字符。</span> <span>请注意，此字符串中的每个字符的值都小于<code>\u0100</code> ，即<code>(char)256</code> 。</span> </p>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readLine--">readLine</a></code>在接口
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readLine--">readLine</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
一个包含流中文本行的字符串。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readUTF--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readUTF</h4> <pre>public <a href="../../../java/lang/String.html" title="class in java.lang">String</a> readUTF()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readUTF--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>读取已使用<a href="../../../java/io/DataInput.html#modified-utf-8">modified UTF-8</a>格式编码的字符串。</span>
|
||
<span><code>readUTF</code>的一般合同是它读取以修改的UTF-8格式编码的Unicode字符串的表示;</span>
|
||
<span>这个字符串然后作为<code>String</code>返回。</span>
|
||
<p> <span>首先，使用网络字节顺序（不考虑当前字节顺序设置），以<code>readUnsignedShort</code>方式的方式读取和使用两个字节构造无符号16位整数。</span> <span>该整数值称为<i>UTF长度</i> ，并指定要读取的其他字节数。</span> <span>然后将这些字节通过组合考虑来转换为字符。</span> <span>每组的长度根据组的第一个字节的值计算。</span> <span>组之后的字节（如果有的话）是下一组的第一个字节。</span> </p>
|
||
<p> <span>如果一个组的第一个字节与位模式<code>0xxxxxxx</code> （其中<code>x</code>表示“可能是<code>0</code>或<code>1</code> ”）相匹配，则该组由该字节组成。</span> <span>该字节是零扩展形成一个字符。</span> </p>
|
||
<p> <span>如果一组的第一个字节与位模式<code>110xxxxx</code>匹配，则该组由该字节<code>a</code>和第二个字节<code>b</code> 。</span> <span>如果没有字节<code>b</code> （因为字节<code>a</code>是要读取的最后一个字节），或者如果字节<code>b</code>与位模式<code>10xxxxxx</code>不匹配，则抛出<code>UTFDataFormatException</code> 。</span> <span>否则，该组将转换为字符：</span> </p>
|
||
<p></p>
|
||
<pre> <span><code> (char)(((a& 0x1F) << 6) | (b & 0x3F)) </code></span> </pre>
|
||
<span>如果一组的第一个字节与位模式<code>1110xxxx</code>匹配，则该组由该字节<code>a</code>和两个以上字节<code>b</code>和<code>c</code> 。</span>
|
||
<span>如果没有字节<code>c</code> （因为字节<code>a</code>是要读取的最后两个字节之一），或者字节<code>b</code>或字节<code>c</code>与位模式<code>10xxxxxx</code>不匹配，则抛出<code>UTFDataFormatException</code> 。</span>
|
||
<span>否则，该组将转换为字符：</span>
|
||
<p></p>
|
||
<pre> <span><code> (char)(((a & 0x0F) << 12) | ((b & 0x3F) << 6) | (c & 0x3F)) </code></span> </pre>
|
||
<span>如果一个组的第一个字节匹配模式<code>1111xxxx</code>或模式<code>10xxxxxx</code> ，则抛出一个<code>UTFDataFormatException</code> 。</span>
|
||
<p> <span>如果在整个过程中随时遇到文件结尾，则抛出<code>java.io.EOFException</code> 。</span> </p>
|
||
<p> <span>在通过此过程将每个组转换为字符后，将以与输入流中读取相应组相同的顺序收集字符，以形成返回的<code>String</code> 。</span> </p>
|
||
<p> <span>当前字节顺序设置被忽略。</span> </p>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
<p> <span><strong>注意：</strong>此方法不应用于执行使用标准UTF-8的图像格式，因为此处使用的修改后的UTF-8与标准UTF-8不兼容。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readUTF--">readUTF</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readUTF--">readUTF</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
从流中读取的字符串。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果此流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/UTFDataFormatException.html" title="class in java.io">UTFDataFormatException</a></code> - 如果字节不表示字符串的有效修改的UTF-8编码。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readFully-byte:A-int-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readFully</h4> <pre>public void readFully(byte[] b,
|
||
int off,
|
||
int len)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-byte:A-int-int-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从流中读取<code>len</code>个字节，并将其存储在<code>b</code>从索引<code>off</code>开始。</span>
|
||
<span>如果到达流的末尾，将抛出一个<code>java.io.EOFException</code> 。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readFully-byte:A-int-int-">readFully</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-byte:A-int-int-">readFully</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>b</code> - 要写入的字节数组。
|
||
</dd>
|
||
<dd>
|
||
<code>off</code> - 起始位置在
|
||
<code>b</code>内写。
|
||
</dd>
|
||
<dd>
|
||
<code>len</code> - 要阅读的最大数量为
|
||
<code>byte</code> 。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readFully-byte:A-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readFully</h4> <pre>public void readFully(byte[] b)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-byte:A-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>读取<code>b.length</code>从流字节，并将其存储到<code>b</code>开始于索引<code>0</code> 。</span>
|
||
<span>如果达到流的末尾，将抛出一个<code>java.io.EOFException</code> 。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#readFully-byte:A-">readFully</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-byte:A-">readFully</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>b</code> -的阵列
|
||
<code>byte</code>秒。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readFully-short:A-int-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readFully</h4> <pre>public void readFully(short[] s,
|
||
int off,
|
||
int len)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">描述从接口： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-short:A-int-int-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>根据当前字节顺序从流中读取<code>len</code>短路（带符号的16位整数），并将它们存储在<code>s</code>从索引<code>off</code>开始。</span>
|
||
<span>如果达到流的末尾，将抛出<code>java.io.EOFException</code> 。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-short:A-int-int-">readFully</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>s</code> - 要写入的短裤阵列。
|
||
</dd>
|
||
<dd>
|
||
<code>off</code> - 起始位置在
|
||
<code>s</code>内写。
|
||
</dd>
|
||
<dd>
|
||
<code>len</code> - 要阅读的最大数量为
|
||
<code>short</code> 。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readFully-char:A-int-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readFully</h4> <pre>public void readFully(char[] c,
|
||
int off,
|
||
int len)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-char:A-int-int-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>读取<code>len</code>从根据当前字节顺序的流字符（无符号的16位整数），并将其存储到<code>c</code>开始于索引<code>off</code> 。</span>
|
||
<span>如果达到流的末尾，将抛出<code>java.io.EOFException</code> 。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-char:A-int-int-">readFully</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>c</code> - 要写入的字符数组。
|
||
</dd>
|
||
<dd>
|
||
<code>off</code> - 起始位置在
|
||
<code>c</code>内写。
|
||
</dd>
|
||
<dd>
|
||
<code>len</code> - 要阅读的最大数量为
|
||
<code>char</code> 。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readFully-int:A-int-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readFully</h4> <pre>public void readFully(int[] i,
|
||
int off,
|
||
int len)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-int:A-int-int-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>读取<code>len</code>从根据当前字节顺序的流整数（带符号的32位整数），并将其存储到<code>i</code>开始于索引<code>off</code> 。</span>
|
||
<span>如果达到流的末尾，将抛出一个<code>java.io.EOFException</code> 。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-int:A-int-int-">readFully</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>i</code> - 要写入的int数组。
|
||
</dd>
|
||
<dd>
|
||
<code>off</code> - 起始位置在
|
||
<code>i</code>内写。
|
||
</dd>
|
||
<dd>
|
||
<code>len</code> - 要阅读的最大数量为
|
||
<code>int</code> 。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readFully-long:A-int-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readFully</h4> <pre>public void readFully(long[] l,
|
||
int off,
|
||
int len)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-long:A-int-int-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>根据当前字节顺序从流中读取<code>len</code>长（有符号的64位整数），并将它们存储在<code>l</code>从索引<code>off</code>开始。</span>
|
||
<span>如果达到流的末尾，将抛出一个<code>java.io.EOFException</code> 。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-long:A-int-int-">readFully</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>l</code> - 要写入的数组。
|
||
</dd>
|
||
<dd>
|
||
<code>off</code> - 起始位置在
|
||
<code>l</code>内写。
|
||
</dd>
|
||
<dd>
|
||
<code>len</code> - 要阅读的最大数量为
|
||
<code>long</code> 。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readFully-float:A-int-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readFully</h4> <pre>public void readFully(float[] f,
|
||
int off,
|
||
int len)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-float:A-int-int-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>读取<code>len</code>根据当前字节顺序从流浮标（32位IEEE单精度浮点值），并且将它们存储到<code>f</code>开始于索引<code>off</code> 。</span>
|
||
<span>如果到达流的末尾，将抛出一个<code>java.io.EOFException</code> 。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-float:A-int-int-">readFully</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>f</code> - 要写入的浮点数组。
|
||
</dd>
|
||
<dd>
|
||
<code>off</code> - 起始位置在
|
||
<code>f</code>内写。
|
||
</dd>
|
||
<dd>
|
||
<code>len</code> - 要阅读的最大数量为
|
||
<code>float</code> 。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readFully-double:A-int-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readFully</h4> <pre>public void readFully(double[] d,
|
||
int off,
|
||
int len)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-double:A-int-int-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>读取<code>len</code>根据当前字节顺序从流双打（64位IEEE双精度浮点值），并且将它们存储到<code>d</code>开始于索引<code>off</code> 。</span>
|
||
<span>如果达到流的末尾，将抛出一个<code>java.io.EOFException</code> 。</span>
|
||
<p> <span>在发生读取之前，流内的位偏移被重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readFully-double:A-int-int-">readFully</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>d</code> - 要写入的双精度数组。
|
||
</dd>
|
||
<dd>
|
||
<code>off</code> - 起始位置在
|
||
<code>d</code>内写。
|
||
</dd>
|
||
<dd>
|
||
<code>len</code> - 要阅读的最大数量为
|
||
<code>double</code> 。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有字节之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="getStreamPosition--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>getStreamPosition</h4> <pre>public long getStreamPosition()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">描述从接口： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#getStreamPosition--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>返回流的当前字节位置。</span>
|
||
<span>下一次读取将从此偏移开始。</span>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#getStreamPosition--">getStreamPosition</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
一个长的包含流的位置。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="getBitOffset--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>getBitOffset</h4> <pre>public int getBitOffset()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#getBitOffset--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>返回当前的位偏移量，为0到7之间的整数，包括0和7。</span>
|
||
<span>通过调用<code>readBits</code>方法<code>readBits</code>更新位偏移。</span>
|
||
<span>值为0表示最高有效位，值为7表示正在读取的字节的最低有效位。</span>
|
||
<p> <span>位偏移量被设置为0时，流被第一次打开，并且通过调用复位为0至<code>seek</code> ， <code>skipBytes</code> ，或任何<code>read</code>或<code>readFully</code>方法。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#getBitOffset--">getBitOffset</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
一个
|
||
<code>int</code>包含0和7之间的位偏移（包括0和7）。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#setBitOffset-int-"><code>ImageInputStream.setBitOffset(int)</code></a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="setBitOffset-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>setBitOffset</h4> <pre>public void setBitOffset(int bitOffset)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#setBitOffset-int-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>将位偏移设置为0到7之间的整数，包括0和7。</span>
|
||
<span><code>getStreamPosition</code>返回的流内的字节偏移量保持不变。</span>
|
||
<span>值为0表示最高有效位，值为7表示正在读取的字节的最低有效位。</span>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#setBitOffset-int-">setBitOffset</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>bitOffset</code> -所需的偏移量，作为
|
||
<code>int</code> 0和7之间，包括端值。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#getBitOffset--"><code>ImageInputStream.getBitOffset()</code></a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readBit--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readBit</h4> <pre>public int readBit()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readBit--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从该流读取的单个比特，并返回它作为一个<code>int</code>与值<code>0</code>或<code>1</code> 。</span>
|
||
<span>位偏移前进一并减少模8。</span>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readBit--">readBit</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
一个
|
||
<code>int</code>包含值
|
||
<code>0</code>或
|
||
<code>1</code> 。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有位之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="readBits-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>readBits</h4> <pre>public long readBits(int numBits)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#readBits-int-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>从流读取一个bitstring，并将其作为<code>long</code>返回，第一位读取成为输出的最高有效位。</span>
|
||
<span>读通过指定的字节内开始<code>getStreamPosition</code> ，在由给定的位<code>getBitOffset</code> 。</span>
|
||
<span>位偏移提前<code>numBits</code>并减少模8。</span>
|
||
<p> <span>流的字节顺序对此方法没有影响。</span> <span>该方法的返回值被构造为一次读取一个位，并且移位到返回值的右侧，如以下伪代码所示：</span> </p>
|
||
<pre> <span><code> long accum = 0L; for (int i = 0; i < numBits; i++) { accum <<= 1; // Shift left one bit to make room accum |= readBit(); } </code></span> </pre>
|
||
<span>需要注意的是的结果<code>readBits(32)</code>可因此不等于的<code>readInt()</code> ，如果正在使用的反向网络字节顺序（即， <code>getByteOrder() == false</code> ）。</span>
|
||
<p> <span>如果在读取所有位之前遇到流的结尾，则抛出<code>java.io.EOFException</code> 。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#readBits-int-">readBits</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>numBits</code> -比特数来读取，作为
|
||
<code>int</code> 0至64，包括端值。
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
bitstring，作为一个
|
||
<code>long</code>与最后一位读取存储在最低有效位。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/EOFException.html" title="class in java.io">EOFException</a></code> - 如果流在读取所有位之前到达结束。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="length--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>length</h4> <pre>public long length()</pre>
|
||
<div class="block">
|
||
<span>返回<code>-1L</code>以表示该流具有未知长度。</span>
|
||
<span>子类必须覆盖此方法以提供实际的长度信息。</span>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#length--">length</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
-1L表示未知长度。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="skipBytes-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>skipBytes</h4> <pre>public int skipBytes(int n)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span>通过致电<code>seek(getStreamPosition() + n)</code>提高当前的流位置。</span>
|
||
<p> <span>位偏移重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/DataInput.html#skipBytes-int-">skipBytes</a></code>在界面
|
||
<code><a href="../../../java/io/DataInput.html" title="interface in java.io">DataInput</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#skipBytes-int-">skipBytes</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>n</code> - 要查找的字节数。
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
一个
|
||
<code>int</code>表示跳过的字节数。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果
|
||
<code>getStreamPosition</code>在计算起始位置或结束位置时抛出
|
||
<code>IOException</code> 。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="skipBytes-long-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>skipBytes</h4> <pre>public long skipBytes(long n)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span>通过致电<code>seek(getStreamPosition() + n)</code>提高当前的流位置。</span>
|
||
<p> <span>位偏移重置为零。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#skipBytes-long-">skipBytes</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>n</code> - 要查找的字节数。
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
一个
|
||
<code>long</code>代表跳过的字节数。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果
|
||
<code>getStreamPosition</code>在计算起始位置或结束位置时抛出
|
||
<code>IOException</code> 。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="seek-long-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>seek</h4> <pre>public void seek(long pos)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">描述从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#seek-long-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>将当前流位置设置为所需位置。</span>
|
||
<span>下一次读取将发生在此位置。</span>
|
||
<span>位偏移设置为0。</span>
|
||
<p> <span>一个<code>IndexOutOfBoundsException</code>如果将被抛出<code>pos</code>比冲洗位置（如通过返回较小<code>getflushedPosition</code> ）。</span> </p>
|
||
<p> <span>寻求文件结尾是合法的;</span> <span>一个<code>java.io.EOFException</code>会，如果执行读取只抛出。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#seek-long-">seek</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>pos</code> - 一个
|
||
<code>long</code>所需文件指针位置的long。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生任何其他I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="mark--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>mark</h4> <pre>public void mark()</pre>
|
||
<div class="block">
|
||
将当前流位置推送到标记位置的堆栈。
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#mark--">mark</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="reset--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>reset</h4> <pre>public void reset()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span>从标记位置的堆栈中重置当前流字节和位位置。</span>
|
||
<p> <span>一个<code>IOException</code>如果先前的标记位置位于流的丢弃部分将被抛出。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#reset--">reset</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="flushBefore-long-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>flushBefore</h4> <pre>public void flushBefore(long pos)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">描述从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#flushBefore-long-">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>在指示的位置之前丢弃流的初始部分。</span>
|
||
<span>尝试寻求在流的冲洗部分内的偏移将导致<code>IndexOutOfBoundsException</code> 。</span>
|
||
<p> <span>调用<code>flushBefore</code>可能允许实现此接口的类释放用于存储数据流的内存或磁盘空间等资源。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#flushBefore-long-">flushBefore</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>pos</code> - 一个
|
||
<code>long</code>其中包含可能被刷新的流前缀的长度。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="flush--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>flush</h4> <pre>public void flush()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">描述从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#flush--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>在当前流位置之前丢弃流的初始位置。</span>
|
||
<span>相当于<code>flushBefore(getStreamPosition())</code> 。</span>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#flush--">flush</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="getFlushedPosition--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>getFlushedPosition</h4> <pre>public long getFlushedPosition()</pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">描述从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#getFlushedPosition--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>返回可以执行搜索的流中的最早位置。</span>
|
||
<span>返回的值将是传递到先前调用的所有值的最大值为<code>flushBefore</code> 。</span>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#getFlushedPosition--">getFlushedPosition</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
最早寻求法定职位，作为
|
||
<code>long</code> 。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="isCached--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>isCached</h4> <pre>public boolean isCached()</pre>
|
||
<div class="block">
|
||
<span>默认实现返回false。</span>
|
||
<span>如果子类缓存数据，子类应该重写。</span>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#isCached--">isCached</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
<code>true</code>如果这个
|
||
<code>ImageInputStream</code>缓存数据。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#isCachedMemory--"><code>ImageInputStream.isCachedMemory()</code></a> ，
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#isCachedFile--"><code>ImageInputStream.isCachedFile()</code></a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="isCachedMemory--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>isCachedMemory</h4> <pre>public boolean isCachedMemory()</pre>
|
||
<div class="block">
|
||
<span>默认实现返回false。</span>
|
||
<span>子类应该在主存中缓存数据时重写。</span>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#isCachedMemory--">isCachedMemory</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
<code>true</code>如果这个
|
||
<code>ImageInputStream</code>缓存数据在主内存中。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#isCached--"><code>ImageInputStream.isCached()</code></a> ，
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#isCachedFile--"><code>ImageInputStream.isCachedFile()</code></a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="isCachedFile--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>isCachedFile</h4> <pre>public boolean isCachedFile()</pre>
|
||
<div class="block">
|
||
<span>默认实现返回false。</span>
|
||
<span>如果子类缓存临时文件中的数据，子类应该重写。</span>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#isCachedFile--">isCachedFile</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
<code>true</code>如果这个
|
||
<code>ImageInputStream</code>缓存一个临时文件中的数据。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#isCached--"><code>ImageInputStream.isCached()</code></a> ，
|
||
<a href="../../../javax/imageio/stream/ImageInputStream.html#isCachedMemory--"><code>ImageInputStream.isCachedMemory()</code></a>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="close--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>close</h4> <pre>public void close()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">说明从界面： <code><a href="../../../javax/imageio/stream/ImageInputStream.html#close--">ImageInputStream</a></code>复制</span>
|
||
</div>
|
||
<div class="block">
|
||
<span>关闭流。</span>
|
||
<span>尝试访问已关闭的流可能会导致<code>IOException</code>或不正确的行为。</span>
|
||
<span>调用此方法可能允许实现此接口的类释放与流相关的资源，如内存，磁盘空间或文件描述符。</span>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/Closeable.html#close--">close</a></code>在界面
|
||
<code><a href="../../../java/io/Closeable.html" title="interface in java.io">Closeable</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/lang/AutoCloseable.html#close--">close</a></code>在界面
|
||
<code><a href="../../../java/lang/AutoCloseable.html" title="interface in java.lang">AutoCloseable</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#close--">close</a></code>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果发生I / O错误。
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> <a name="finalize--">
|
||
<!-- --> </a>
|
||
<ul class="blockListLast">
|
||
<li class="blockList"> <h4>finalize</h4> <pre>protected void finalize()
|
||
throws <a href="../../../java/lang/Throwable.html" title="class in java.lang">Throwable</a></pre>
|
||
<div class="block">
|
||
<span>在垃圾收集之前完成此对象。</span>
|
||
<span>调用<code>close</code>方法来关闭任何打开的输入源。</span>
|
||
<span>不应该从应用程序代码调用此方法。</span>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">重写：</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/lang/Object.html#finalize--">finalize</a></code>在类别
|
||
<code><a href="../../../java/lang/Object.html" title="class in java.lang">Object</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/lang/Throwable.html" title="class in java.lang">Throwable</a></code> - 如果在超类最终化期间发生错误。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见：</span>
|
||
</dt>
|
||
<dd>
|
||
<span><a href="../../../java/lang/ref/WeakReference.html" title="java.lang.ref中的类"><code>WeakReference</code></a> ， <a href="../../../java/lang/ref/PhantomReference.html" title="java.lang.ref中的类"><code>PhantomReference</code></a></span>
|
||
</dd>
|
||
</dl> </li>
|
||
</ul> </li>
|
||
</ul> </li>
|
||
</ul>
|
||
</div>
|
||
</div> |