mirror of
https://github.com/fofolee/uTools-Manuals.git
synced 2025-07-05 00:04:33 +08:00
506 lines
26 KiB
HTML
506 lines
26 KiB
HTML
<div class="header">
|
||
<div class="subTitle">
|
||
javax.imageio.stream
|
||
</div>
|
||
<h2 class="title" title="Class FileCacheImageInputStream">Class FileCacheImageInputStream</h2>
|
||
</div><div class="contentContainer">
|
||
<ul class="inheritance">
|
||
<li><a href="../../../java/lang/Object.html" title="class in java.lang">java.lang.Object</a></li>
|
||
<li>
|
||
<ul class="inheritance">
|
||
<li><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html" title="class in javax.imageio.stream">javax.imageio.stream.ImageInputStreamImpl</a></li>
|
||
<li>
|
||
<ul class="inheritance">
|
||
<li>javax.imageio.stream.FileCacheImageInputStream</li>
|
||
</ul> </li>
|
||
</ul> </li>
|
||
</ul>
|
||
<div class="description">
|
||
<ul class="blockList">
|
||
<li class="blockList">
|
||
<dl>
|
||
<dt>
|
||
All Implemented Interfaces:
|
||
</dt>
|
||
<dd>
|
||
<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>
|
||
</dd>
|
||
</dl>
|
||
<hr/> <br/> <pre>public class <span class="typeNameLabel">FileCacheImageInputStream</span>
|
||
extends <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html" title="class in javax.imageio.stream">ImageInputStreamImpl</a></pre>
|
||
<div class="block">
|
||
<span>的实现<code>ImageInputStream</code>从正规获取输入<code>InputStream</code> 。</span>
|
||
<span>一个文件用于缓存先前读取的数据。</span>
|
||
</div> </li>
|
||
</ul>
|
||
</div>
|
||
<div class="summary">
|
||
<ul class="blockList">
|
||
<li class="blockList">
|
||
<!-- =========== FIELD SUMMARY =========== -->
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="field.summary">
|
||
<!-- --> </a> <h3>Field Summary</h3>
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="fields.inherited.from.class.javax.imageio.stream.ImageInputStreamImpl">
|
||
<!-- --> </a> <h3>Fields inherited from class javax.imageio.stream.<a href="../../../javax/imageio/stream/ImageInputStreamImpl.html" title="class in javax.imageio.stream">ImageInputStreamImpl</a></h3> <code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#bitOffset">bitOffset</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#byteOrder">byteOrder</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#flushedPos">flushedPos</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#streamPos">streamPos</a></code></li>
|
||
</ul> </li>
|
||
</ul>
|
||
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="constructor.summary">
|
||
<!-- --> </a> <h3>构造方法摘要</h3>
|
||
<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Constructor Summary table, listing constructors, and an explanation">
|
||
<caption>
|
||
<span>构造方法</span>
|
||
<span class="tabEnd"> </span>
|
||
</caption>
|
||
<tbody>
|
||
<tr>
|
||
<th class="colOne" scope="col">Constructor and Description</th>
|
||
</tr>
|
||
<tr class="altColor">
|
||
<td class="colOne"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#FileCacheImageInputStream-java.io.InputStream-java.io.File-">FileCacheImageInputStream</a></span>(<a href="../../../java/io/InputStream.html" title="class in java.io">InputStream</a> stream, <a href="../../../java/io/File.html" title="class in java.io">File</a> cacheDir)</code>
|
||
<div class="block">
|
||
构造一个
|
||
<code>FileCacheImageInputStream</code> ,它将从给定的
|
||
<code>InputStream</code>读取。
|
||
</div> </td>
|
||
</tr>
|
||
</tbody>
|
||
</table> </li>
|
||
</ul>
|
||
<!-- ========== METHOD SUMMARY =========== -->
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="method.summary">
|
||
<!-- --> </a> <h3>方法摘要</h3>
|
||
<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Method Summary table, listing methods, and an explanation">
|
||
<caption>
|
||
<span class="activeTableTab" id="t0"><span>所有方法</span><span class="tabEnd"> </span></span>
|
||
<span class="tableTab" id="t2"><span><a href="javascript:show(2);">接口方法</a></span><span class="tabEnd"> </span></span>
|
||
<span class="tableTab" id="t4"><span><a href="javascript:show(8);">具体的方法</a></span><span class="tabEnd"> </span></span>
|
||
</caption>
|
||
<tbody>
|
||
<tr>
|
||
<th class="colFirst" scope="col">Modifier and Type</th>
|
||
<th class="colLast" scope="col">Method and Description</th>
|
||
</tr>
|
||
<tr class="altColor" id="i0">
|
||
<td class="colFirst"><code>void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#close--">close</a></span>()</code>
|
||
<div class="block">
|
||
关闭此
|
||
<code>FileCacheImageInputStream</code> ,关闭并删除缓存文件。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i1">
|
||
<td class="colFirst"><code>protected void</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#finalize--">finalize</a></span>()</code>
|
||
<div class="block">
|
||
在垃圾收集之前完成此对象。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i2">
|
||
<td class="colFirst"><code>boolean</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#isCached--">isCached</a></span>()</code>
|
||
<div class="block">
|
||
返回
|
||
<code>true</code>因为
|
||
<code>ImageInputStream</code>缓存数据以允许向后搜索。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i3">
|
||
<td class="colFirst"><code>boolean</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#isCachedFile--">isCachedFile</a></span>()</code>
|
||
<div class="block">
|
||
返回
|
||
<code>true</code>因为这个
|
||
<code>ImageInputStream</code>维护一个文件缓存。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i4">
|
||
<td class="colFirst"><code>boolean</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#isCachedMemory--">isCachedMemory</a></span>()</code>
|
||
<div class="block">
|
||
返回
|
||
<code>false</code>因为这个
|
||
<code>ImageInputStream</code>没有维护主内存缓存。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="rowColor" id="i5">
|
||
<td class="colFirst"><code>int</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#read--">read</a></span>()</code>
|
||
<div class="block">
|
||
从流中读取一个字节,并将其作为从0到255之间的
|
||
<code>int</code>返回。
|
||
</div> </td>
|
||
</tr>
|
||
<tr class="altColor" id="i6">
|
||
<td class="colFirst"><code>int</code></td>
|
||
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#read-byte:A-int-int-">read</a></span>(byte[] b, int off, int len)</code>
|
||
<div class="block">
|
||
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> 。
|
||
</div> </td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<ul class="blockList">
|
||
<li class="blockList"><a name="methods.inherited.from.class.javax.imageio.stream.ImageInputStreamImpl">
|
||
<!-- --> </a> <h3>Methods inherited from class javax.imageio.stream.<a href="../../../javax/imageio/stream/ImageInputStreamImpl.html" title="class in javax.imageio.stream">ImageInputStreamImpl</a></h3> <code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#checkClosed--">checkClosed</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#flush--">flush</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#flushBefore-long-">flushBefore</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#getBitOffset--">getBitOffset</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#getByteOrder--">getByteOrder</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#getFlushedPosition--">getFlushedPosition</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#getStreamPosition--">getStreamPosition</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#length--">length</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#mark--">mark</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#read-byte:A-">read</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readBit--">readBit</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readBits-int-">readBits</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readBoolean--">readBoolean</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readByte--">readByte</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readBytes-javax.imageio.stream.IIOByteBuffer-int-">readBytes</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readChar--">readChar</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readDouble--">readDouble</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFloat--">readFloat</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-byte:A-">readFully</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-byte:A-int-int-">readFully</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-char:A-int-int-">readFully</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-double:A-int-int-">readFully</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-float:A-int-int-">readFully</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-int:A-int-int-">readFully</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-long:A-int-int-">readFully</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readFully-short:A-int-int-">readFully</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readInt--">readInt</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readLine--">readLine</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readLong--">readLong</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readShort--">readShort</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readUnsignedByte--">readUnsignedByte</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readUnsignedInt--">readUnsignedInt</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readUnsignedShort--">readUnsignedShort</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#readUTF--">readUTF</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#reset--">reset</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#seek-long-">seek</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#setBitOffset-int-">setBitOffset</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#setByteOrder-java.nio.ByteOrder-">setByteOrder</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#skipBytes-int-">skipBytes</a>, <a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#skipBytes-long-">skipBytes</a></code></li>
|
||
</ul>
|
||
<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">
|
||
<!-- ========= 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="FileCacheImageInputStream-java.io.InputStream-java.io.File-">
|
||
<!-- --> </a>
|
||
<ul class="blockListLast">
|
||
<li class="blockList"> <h4>FileCacheImageInputStream</h4> <pre>public FileCacheImageInputStream(<a href="../../../java/io/InputStream.html" title="class in java.io">InputStream</a> stream,
|
||
<a href="../../../java/io/File.html" title="class in java.io">File</a> cacheDir)
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span>构造一个<code>FileCacheImageInputStream</code> ,它将从给定的<code>InputStream</code>读取。</span>
|
||
<p> <span>临时文件用作缓存。</span> <span>如果<code>cacheDir</code>是非<code>null</code>并且是一个目录,该文件将在那里创建。</span> <span>如果是<code>null</code> ,将使用系统相关的默认临时文件目录(有关详细信息,请参阅File.createTempFile的<code>File.createTempFile</code> )。</span> </p>
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="paramLabel">参数</span>
|
||
</dt>
|
||
<dd>
|
||
<code>stream</code> - 要阅读的
|
||
<code>InputStream</code> 。
|
||
</dd>
|
||
<dd>
|
||
<code>cacheDir</code> - 一个
|
||
<code>File</code>指示应该创建高速缓存文件的位置,或
|
||
<code>null</code>使用系统目录。
|
||
</dd>
|
||
<dt>
|
||
<span class="throwsLabel">异常</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../java/lang/IllegalArgumentException.html" title="class in java.lang">IllegalArgumentException</a></code> - 如果
|
||
<code>stream</code>是
|
||
<code>null</code> 。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/lang/IllegalArgumentException.html" title="class in java.lang">IllegalArgumentException</a></code> - 如果
|
||
<code>cacheDir</code>是非
|
||
<code>null</code>但不是一个目录。
|
||
</dd>
|
||
<dd>
|
||
<code><a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果无法创建缓存文件。
|
||
</dd>
|
||
</dl> </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="read--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>read</h4> <pre>public int read()
|
||
throws <a href="../../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
|
||
<div class="block">
|
||
<span class="descfrmTypeLabel">描述从类别复制: <code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#read--">ImageInputStreamImpl</a></code></span>
|
||
</div>
|
||
<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>在界面
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html" title="interface in javax.imageio.stream">ImageInputStream</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#read--">read</a></code>在类别
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html" title="class in javax.imageio.stream">ImageInputStreamImpl</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-int-int-">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>read</h4> <pre>public 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 class="descfrmTypeLabel">描述从类别复制: <code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#read-byte:A-int-int-">ImageInputStreamImpl</a></code></span>
|
||
</div>
|
||
<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="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#read-byte:A-int-int-">read</a></code>在类别
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html" title="class in javax.imageio.stream">ImageInputStreamImpl</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/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="isCached--">
|
||
<!-- --> </a>
|
||
<ul class="blockList">
|
||
<li class="blockList"> <h4>isCached</h4> <pre>public boolean isCached()</pre>
|
||
<div class="block">
|
||
返回
|
||
<code>true</code>因为
|
||
<code>ImageInputStream</code>缓存数据以允许向后搜索。
|
||
</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="overrideSpecifyLabel">重写:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#isCached--">isCached</a></code>在类别
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html" title="class in javax.imageio.stream">ImageInputStreamImpl</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
<code>true</code> 。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见:</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#isCachedMemory--"><code>isCachedMemory()</code></a> ,
|
||
<a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#isCachedFile--"><code>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">
|
||
返回
|
||
<code>true</code>因为
|
||
<code>ImageInputStream</code>维护文件缓存。
|
||
</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="overrideSpecifyLabel">重写:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#isCachedFile--">isCachedFile</a></code>在类别
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html" title="class in javax.imageio.stream">ImageInputStreamImpl</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
<code>true</code> 。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见:</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#isCached--"><code>isCached()</code></a> ,
|
||
<a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#isCachedMemory--"><code>isCachedMemory()</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">
|
||
返回
|
||
<code>false</code>因为
|
||
<code>ImageInputStream</code>不维护主内存缓存。
|
||
</div>
|
||
<dl>
|
||
<dt>
|
||
<span class="overrideSpecifyLabel">Specified by:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStream.html#isCachedMemory--">isCachedMemory</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="overrideSpecifyLabel">重写:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#isCachedMemory--">isCachedMemory</a></code>在类别
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html" title="class in javax.imageio.stream">ImageInputStreamImpl</a></code>
|
||
</dd>
|
||
<dt>
|
||
<span class="returnLabel">结果</span>
|
||
</dt>
|
||
<dd>
|
||
<code>false</code> 。
|
||
</dd>
|
||
<dt>
|
||
<span class="seeLabel">另请参见:</span>
|
||
</dt>
|
||
<dd>
|
||
<a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#isCached--"><code>isCached()</code></a> ,
|
||
<a href="../../../javax/imageio/stream/FileCacheImageInputStream.html#isCachedFile--"><code>isCachedFile()</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>关闭此<code>FileCacheImageInputStream</code> ,关闭并删除缓存文件。</span>
|
||
<span>源<code>InputStream</code>未关闭。</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>接口
|
||
<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="overrideSpecifyLabel">重写:</span>
|
||
</dt>
|
||
<dd>
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#close--">close</a></code>在类别
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html" title="class in javax.imageio.stream">ImageInputStreamImpl</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="../../../javax/imageio/stream/ImageInputStreamImpl.html#finalize--">finalize</a></code>在类别
|
||
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html" title="class in javax.imageio.stream">ImageInputStreamImpl</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> |