uTools-Manuals/docs/java/javax/imageio/stream/MemoryCacheImageInputStream.html

<div class="header">
<div class="subTitle">
     javax.imageio.stream 
   </div>
<h2 class="title" title="Class MemoryCacheImageInputStream">Class MemoryCacheImageInputStream</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.MemoryCacheImageInputStream</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">MemoryCacheImageInputStream</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>存储器缓冲器用于至少缓存丢弃位置和当前读取位置之间的数据。</span>
<p> <span>一般地，它是优选使用<code>FileCacheImageInputStream</code>从常规读出时<code>InputStream</code> 。</span> <span>在不可能创建可写入临时文件的情况下提供此类。</span> </p>
</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/MemoryCacheImageInputStream.html#MemoryCacheImageInputStream-java.io.InputStream-">MemoryCacheImageInputStream</a></span>(<a href="../../../java/io/InputStream.html" title="class in java.io">InputStream</a> stream)</code>
<div class="block">
              构造一个 
             <code>MemoryCacheImageInputStream</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/MemoryCacheImageInputStream.html#close--">close</a></span>()</code>
<div class="block">
              关闭此 
             <code>MemoryCacheImageInputStream</code> ，释放缓存。 
            </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/MemoryCacheImageInputStream.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>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/MemoryCacheImageInputStream.html#flushBefore-long-">flushBefore</a></span>(long pos)</code>
<div class="block">
              在指示的位置之前丢弃流的初始部分。 
            </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/MemoryCacheImageInputStream.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="altColor" id="i4">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/MemoryCacheImageInputStream.html#isCachedFile--">isCachedFile</a></span>()</code>
<div class="block">
              返回 
             <code>false</code>因为这个 
             <code>ImageInputStream</code>没有维护文件缓存。 
            </div> </td>
</tr>
<tr class="rowColor" id="i5">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/MemoryCacheImageInputStream.html#isCachedMemory--">isCachedMemory</a></span>()</code>
<div class="block">
              返回 
             <code>true</code>因为这个 
             <code>ImageInputStream</code>维护一个主内存缓存。 
            </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/MemoryCacheImageInputStream.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="rowColor" id="i7">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/imageio/stream/MemoryCacheImageInputStream.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#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="MemoryCacheImageInputStream-java.io.InputStream-">
<!-- --> </a>
<ul class="blockListLast">
<li class="blockList"> <h4>MemoryCacheImageInputStream</h4> <pre>public MemoryCacheImageInputStream(<a href="../../../java/io/InputStream.html" title="class in java.io">InputStream</a> stream)</pre>
<div class="block">
            构造一个 
           <code>MemoryCacheImageInputStream</code> ，将从给定的 
           <code>InputStream</code>读取。 
          </div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>stream</code> - 要阅读的 
            <code>InputStream</code> 。 
           </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>
</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>在接口 
            <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 
            <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>如果没有读取字节，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>在接口 
            <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 
            <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="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">说明从接口： <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>尝试寻找流中冲洗部分的偏移量将导致<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流中的数据的资源（如内存或磁盘空间）。</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="overrideSpecifyLabel">重写：</span>
</dt>
<dd>
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#flushBefore-long-">flushBefore</a></code>在 
            <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>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="isCached--">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>isCached</h4> <pre>public boolean isCached()</pre>
<div class="block">
            返回 
           <code>true</code>因为这 
           <code>ImageInputStream</code>缓存数据，以便向后追溯。 
          </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 
            <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/MemoryCacheImageInputStream.html#isCachedMemory--"><code>isCachedMemory()</code></a> ， 
            <a href="../../../javax/imageio/stream/MemoryCacheImageInputStream.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>false</code>因为这个 
           <code>ImageInputStream</code>没有维护一个文件缓存。 
          </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#isCachedFile--">isCachedFile</a></code>在 
            <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/MemoryCacheImageInputStream.html#isCached--"><code>isCached()</code></a> ， 
            <a href="../../../javax/imageio/stream/MemoryCacheImageInputStream.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>true</code>因为这 
           <code>ImageInputStream</code>维护一个主内存缓存。 
          </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 
            <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/MemoryCacheImageInputStream.html#isCached--"><code>isCached()</code></a> ， 
            <a href="../../../javax/imageio/stream/MemoryCacheImageInputStream.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>MemoryCacheImageInputStream</code> ，释放缓存。</span>
<span>来源<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>中的 
            <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="overrideSpecifyLabel">重写：</span>
</dt>
<dd>
<code><a href="../../../javax/imageio/stream/ImageInputStreamImpl.html#close--">close</a></code>在类 
            <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="../../../javax/imageio/stream/ImageInputStreamImpl.html#finalize--">finalize</a></code>在 
            <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>