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<div class="subTitle">org.apache.commons.io.output</div>
<h2 title="Class ProxyOutputStream" class="title">Class ProxyOutputStream</h2>
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<li><a href="http://docs.oracle.com/javase/7/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">java.io.OutputStream</a></li>
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<ul class="inheritance">
<li><a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true" title="class or interface in java.io">java.io.FilterOutputStream</a></li>
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<li>org.apache.commons.io.output.ProxyOutputStream</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/io/Flushable.html?is-external=true" title="class or interface in java.io">Flushable</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></dd>
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<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../org/apache/commons/io/output/CloseShieldOutputStream.html" title="class in org.apache.commons.io.output">CloseShieldOutputStream</a>, <a href="../../../../../org/apache/commons/io/output/CountingOutputStream.html" title="class in org.apache.commons.io.output">CountingOutputStream</a>, <a href="../../../../../org/apache/commons/io/output/TaggedOutputStream.html" title="class in org.apache.commons.io.output">TaggedOutputStream</a>, <a href="../../../../../org/apache/commons/io/output/TeeOutputStream.html" title="class in org.apache.commons.io.output">TeeOutputStream</a></dd>
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<pre>public class <span class="typeNameLabel">ProxyOutputStream</span>
extends <a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true" title="class or interface in java.io">FilterOutputStream</a></pre>
<div class="block">A Proxy stream which acts as expected, that is it passes the method
 calls on to the proxied stream and doesn't change which methods are
 being called. It is an alternative base class to FilterOutputStream
 to increase reusability.
 <p>
 See the protected methods for ways in which a subclass can easily decorate
 a stream with custom pre-, post- or error processing functionality.</div>
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<h3>Fields inherited from class&nbsp;java.io.<a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true" title="class or interface in java.io">FilterOutputStream</a></h3>
<code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true#out" title="class or interface in java.io">out</a></code></li>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/io/output/ProxyOutputStream.html#ProxyOutputStream-java.io.OutputStream-">ProxyOutputStream</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;proxy)</code>
<div class="block">Constructs a new ProxyOutputStream.</div>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/io/output/ProxyOutputStream.html#afterWrite-int-">afterWrite</a></span>(int&nbsp;n)</code>
<div class="block">Invoked by the write methods after the proxied call has returned
 successfully.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/io/output/ProxyOutputStream.html#beforeWrite-int-">beforeWrite</a></span>(int&nbsp;n)</code>
<div class="block">Invoked by the write methods before the call is proxied.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/io/output/ProxyOutputStream.html#close--">close</a></span>()</code>
<div class="block">Invokes the delegate's <code>close()</code> method.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/io/output/ProxyOutputStream.html#flush--">flush</a></span>()</code>
<div class="block">Invokes the delegate's <code>flush()</code> method.</div>
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</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/io/output/ProxyOutputStream.html#handleIOException-java.io.IOException-">handleIOException</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>&nbsp;e)</code>
<div class="block">Handle any IOExceptions thrown.</div>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/io/output/ProxyOutputStream.html#write-byte:A-">write</a></span>(byte[]&nbsp;bts)</code>
<div class="block">Invokes the delegate's <code>write(byte[])</code> method.</div>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/io/output/ProxyOutputStream.html#write-byte:A-int-int-">write</a></span>(byte[]&nbsp;bts,
     int&nbsp;st,
     int&nbsp;end)</code>
<div class="block">Invokes the delegate's <code>write(byte[])</code> method.</div>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/io/output/ProxyOutputStream.html#write-int-">write</a></span>(int&nbsp;idx)</code>
<div class="block">Invokes the delegate's <code>write(int)</code> method.</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h4>ProxyOutputStream</h4>
<pre>public&nbsp;ProxyOutputStream(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;proxy)</pre>
<div class="block">Constructs a new ProxyOutputStream.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>proxy</code> - the OutputStream to delegate to</dd>
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<h4>write</h4>
<pre>public&nbsp;void&nbsp;write(int&nbsp;idx)
           throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Invokes the delegate's <code>write(int)</code> method.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true#write-int-" title="class or interface in java.io">write</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true" title="class or interface in java.io">FilterOutputStream</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>idx</code> - the byte to write</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if an I/O error occurs</dd>
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<h4>write</h4>
<pre>public&nbsp;void&nbsp;write(byte[]&nbsp;bts)
           throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Invokes the delegate's <code>write(byte[])</code> method.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true#write-byte:A-" title="class or interface in java.io">write</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true" title="class or interface in java.io">FilterOutputStream</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bts</code> - the bytes to write</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if an I/O error occurs</dd>
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<pre>public&nbsp;void&nbsp;write(byte[]&nbsp;bts,
                  int&nbsp;st,
                  int&nbsp;end)
           throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Invokes the delegate's <code>write(byte[])</code> method.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true#write-byte:A-int-int-" title="class or interface in java.io">write</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true" title="class or interface in java.io">FilterOutputStream</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bts</code> - the bytes to write</dd>
<dd><code>st</code> - The start offset</dd>
<dd><code>end</code> - The number of bytes to write</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if an I/O error occurs</dd>
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<pre>public&nbsp;void&nbsp;flush()
           throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Invokes the delegate's <code>flush()</code> method.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Flushable.html?is-external=true#flush--" title="class or interface in java.io">flush</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Flushable.html?is-external=true" title="class or interface in java.io">Flushable</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true#flush--" title="class or interface in java.io">flush</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true" title="class or interface in java.io">FilterOutputStream</a></code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if an I/O error occurs</dd>
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<pre>public&nbsp;void&nbsp;close()
           throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Invokes the delegate's <code>close()</code> method.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Closeable.html?is-external=true#close--" title="class or interface in java.io">close</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/AutoCloseable.html?is-external=true#close--" title="class or interface in java.lang">close</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true#close--" title="class or interface in java.io">close</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/FilterOutputStream.html?is-external=true" title="class or interface in java.io">FilterOutputStream</a></code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if an I/O error occurs</dd>
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<h4>beforeWrite</h4>
<pre>protected&nbsp;void&nbsp;beforeWrite(int&nbsp;n)
                    throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Invoked by the write methods before the call is proxied. The number
 of bytes to be written (1 for the <a href="../../../../../org/apache/commons/io/output/ProxyOutputStream.html#write-int-"><code>write(int)</code></a> method, buffer
 length for <a href="../../../../../org/apache/commons/io/output/ProxyOutputStream.html#write-byte:A-"><code>write(byte[])</code></a>, etc.) is given as an argument.
 <p>
 Subclasses can override this method to add common pre-processing
 functionality without having to override all the write methods.
 The default implementation does nothing.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>n</code> - number of bytes to be written</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if the pre-processing fails</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.0</dd>
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<h4>afterWrite</h4>
<pre>protected&nbsp;void&nbsp;afterWrite(int&nbsp;n)
                   throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Invoked by the write methods after the proxied call has returned
 successfully. The number of bytes written (1 for the
 <a href="../../../../../org/apache/commons/io/output/ProxyOutputStream.html#write-int-"><code>write(int)</code></a> method, buffer length for <a href="../../../../../org/apache/commons/io/output/ProxyOutputStream.html#write-byte:A-"><code>write(byte[])</code></a>,
 etc.) is given as an argument.
 <p>
 Subclasses can override this method to add common post-processing
 functionality without having to override all the write methods.
 The default implementation does nothing.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>n</code> - number of bytes written</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if the post-processing fails</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.0</dd>
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<h4>handleIOException</h4>
<pre>protected&nbsp;void&nbsp;handleIOException(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>&nbsp;e)
                          throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Handle any IOExceptions thrown.
 <p>
 This method provides a point to implement custom exception
 handling. The default behaviour is to re-throw the exception.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>e</code> - The IOException thrown</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if an I/O error occurs</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.0</dd>
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