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<div class="subTitle">javax.servlet.http</div>
<h2 title="Interface Part" class="title">Interface Part</h2>
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<pre>public interface <span class="strong">Part</span></pre>
<div class="block">This class represents a part as uploaded to the server as part of a
<code>multipart/form-data</code> request body. The part may represent either
an uploaded file or form data.</div>
<dl><dt><span class="strong">Since:</span></dt>
<dd>Servlet 3.0</dd></dl>
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<h3>Method Summary</h3>
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<caption><span>Methods</span><span class="tabEnd"> </span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../javax/servlet/http/Part.html#delete()">delete</a></strong>()</code>
<div class="block">Deletes the underlying storage for a part, including deleting any
associated temporary disk file.</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../javax/servlet/http/Part.html#getContentType()">getContentType</a></strong>()</code>
<div class="block">Obtain the content type passed by the browser or <code>null</code> if not
defined.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../javax/servlet/http/Part.html#getHeader(java.lang.String)">getHeader</a></strong>(java.lang.String name)</code>
<div class="block">Obtains the value of the specified part header as a String.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.util.Collection<java.lang.String></code></td>
<td class="colLast"><code><strong><a href="../../../javax/servlet/http/Part.html#getHeaderNames()">getHeaderNames</a></strong>()</code>
<div class="block">Returns a Collection of all the header names provided for this part.</div>
</td>
</tr>
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<td class="colFirst"><code>java.util.Collection<java.lang.String></code></td>
<td class="colLast"><code><strong><a href="../../../javax/servlet/http/Part.html#getHeaders(java.lang.String)">getHeaders</a></strong>(java.lang.String name)</code>
<div class="block">Obtain all the values of the specified part header.</div>
</td>
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<td class="colFirst"><code>java.io.InputStream</code></td>
<td class="colLast"><code><strong><a href="../../../javax/servlet/http/Part.html#getInputStream()">getInputStream</a></strong>()</code>
<div class="block">Obtain an <code>InputStream</code> that can be used to retrieve the
contents of the file.</div>
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<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../javax/servlet/http/Part.html#getName()">getName</a></strong>()</code>
<div class="block">Obtain the name of the field in the multipart form corresponding to this
part.</div>
</td>
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<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><strong><a href="../../../javax/servlet/http/Part.html#getSize()">getSize</a></strong>()</code>
<div class="block">Obtain the size of this part.</div>
</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../javax/servlet/http/Part.html#write(java.lang.String)">write</a></strong>(java.lang.String fileName)</code>
<div class="block">A convenience method to write an uploaded part to disk.</div>
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<h4>getInputStream</h4>
<pre>java.io.InputStream getInputStream()
throws java.io.IOException</pre>
<div class="block">Obtain an <code>InputStream</code> that can be used to retrieve the
contents of the file.</div>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd></dl>
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<h4>getContentType</h4>
<pre>java.lang.String getContentType()</pre>
<div class="block">Obtain the content type passed by the browser or <code>null</code> if not
defined.</div>
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<h4>getName</h4>
<pre>java.lang.String getName()</pre>
<div class="block">Obtain the name of the field in the multipart form corresponding to this
part.</div>
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<h4>getSize</h4>
<pre>long getSize()</pre>
<div class="block">Obtain the size of this part.</div>
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<h4>write</h4>
<pre>void write(java.lang.String fileName)
throws java.io.IOException</pre>
<div class="block">A convenience method to write an uploaded part to disk. The client code
is not concerned with whether or not the part is stored in memory, or on
disk in a temporary location. They just want to write the uploaded part
to a file.
This method is not guaranteed to succeed if called more than once for
the same part. This allows a particular implementation to use, for
example, file renaming, where possible, rather than copying all of the
underlying data, thus gaining a significant performance benefit.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>fileName</code> - The location into which the uploaded part should be
stored. Relative locations are relative to <a href="../../../javax/servlet/MultipartConfigElement.html#getLocation()"><code>MultipartConfigElement.getLocation()</code></a></dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd></dl>
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<h4>delete</h4>
<pre>void delete()
throws java.io.IOException</pre>
<div class="block">Deletes the underlying storage for a part, including deleting any
associated temporary disk file. Although the container will delete this
storage automatically this method can be used to ensure that this is done
at an earlier time, thus preserving system resources.
<p>
Containers are only required to delete the associated storage when the
Part instance is garbage collected. Apache Tomcat will delete the
associated storage when the associated request has finished processing.
Behaviour of other containers may be different.</div>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd></dl>
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<h4>getHeader</h4>
<pre>java.lang.String getHeader(java.lang.String name)</pre>
<div class="block">Obtains the value of the specified part header as a String. If there are
multiple headers with the same name, this method returns the first header
in the part. The header name is case insensitive.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>name</code> - Header name</dd>
<dt><span class="strong">Returns:</span></dt><dd>The header value or <code>null</code> if the header is not
present</dd></dl>
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<h4>getHeaders</h4>
<pre>java.util.Collection<java.lang.String> getHeaders(java.lang.String name)</pre>
<div class="block">Obtain all the values of the specified part header. If the part did not
include any headers of the specified name, this method returns an empty
Collection. The header name is case insensitive.</div>
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<h4>getHeaderNames</h4>
<pre>java.util.Collection<java.lang.String> getHeaderNames()</pre>
<div class="block">Returns a Collection of all the header names provided for this part.</div>
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