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<h2 title="Class ServletInputStream" class="title">Class ServletInputStream</h2>
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<li>java.lang.Object</li>
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<li>java.io.InputStream</li>
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<pre>public abstract class <span class="strong">ServletInputStream</span>
extends java.io.InputStream</pre>
<div class="block">Provides an input stream for reading binary data from a client request,
including an efficient <code>readLine</code> method for reading data one line
at a time. With some protocols, such as HTTP POST and PUT, a
<code>ServletInputStream</code> object can be used to read data sent from the
client.
<p>
A <code>ServletInputStream</code> object is normally retrieved via the
<a href="../../javax/servlet/ServletRequest.html#getInputStream()"><code>ServletRequest.getInputStream()</code></a> method.
<p>
This is an abstract class that a servlet container implements. Subclasses of
this class must implement the <code>java.io.InputStream.read()</code> method.</div>
<dl><dt><span class="strong">Author:</span></dt>
<dd>Various</dd>
<dt><span class="strong">See Also:</span></dt><dd><a href="../../javax/servlet/ServletRequest.html" title="interface in javax.servlet"><code>ServletRequest</code></a></dd></dl>
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<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><strong><a href="../../javax/servlet/ServletInputStream.html#ServletInputStream()">ServletInputStream</a></strong>()</code>
<div class="block">Does nothing, because this is an abstract class.</div>
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../javax/servlet/ServletInputStream.html#readLine(byte[], int, int)">readLine</a></strong>(byte[] b,
int off,
int len)</code>
<div class="block">Reads the input stream, one line at a time.</div>
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<pre>protected ServletInputStream()</pre>
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<h4>readLine</h4>
<pre>public int readLine(byte[] b,
int off,
int len)
throws java.io.IOException</pre>
<div class="block">Reads the input stream, one line at a time. Starting at an offset, reads
bytes into an array, until it reads a certain number of bytes or reaches
a newline character, which it reads into the array as well.
<p>
This method returns -1 if it reaches the end of the input stream before
reading the maximum number of bytes.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>b</code> - an array of bytes into which data is read</dd><dd><code>off</code> - an integer specifying the character at which this method
begins reading</dd><dd><code>len</code> - an integer specifying the maximum number of bytes to read</dd>
<dt><span class="strong">Returns:</span></dt><dd>an integer specifying the actual number of bytes read, or -1 if
the end of the stream is reached</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.io.IOException</code> - if an input or output exception has occurred</dd></dl>
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