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<div class="subTitle">org.apache.commons.io</div>
<h2 title="Class FileCleaner" class="title">Class FileCleaner</h2>
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<li>org.apache.commons.io.FileCleaner</li>
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<div class="description">
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<li class="blockList">
<hr>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/commons/io/FileCleaningTracker.html" title="class in org.apache.commons.io"><code>FileCleaningTracker</code></a></span></div>
</div>
<br>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public class <span class="typeNameLabel">FileCleaner</span>
extends <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block">Keeps track of files awaiting deletion, and deletes them when an associated
marker object is reclaimed by the garbage collector.
<p>
This utility creates a background thread to handle file deletion.
Each file to be deleted is registered with a handler object.
When the handler object is garbage collected, the file is deleted.
<p>
In an environment with multiple class loaders (a servlet container, for
example), you should consider stopping the background thread if it is no
longer needed. This is done by invoking the method
<a href="../../../../org/apache/commons/io/FileCleaner.html#exitWhenFinished--"><code>exitWhenFinished()</code></a>, typically in
<code>javax.servlet.ServletContextListener.contextDestroyed(javax.servlet.ServletContextEvent)</code> or similar.</div>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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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/FileCleaner.html#FileCleaner--">FileCleaner</a></span>()</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t6" class="tableTab"><span><a href="javascript:show(32);">Deprecated Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FileCleaner.html#exitWhenFinished--">exitWhenFinished</a></span>()</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/commons/io/FileCleaningTracker.html#exitWhenFinished--"><code>FileCleaningTracker.exitWhenFinished()</code></a>.</span></div>
</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/commons/io/FileCleaningTracker.html" title="class in org.apache.commons.io">FileCleaningTracker</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FileCleaner.html#getInstance--">getInstance</a></span>()</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Returns the singleton instance, which is used by the deprecated, static methods.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FileCleaner.html#getTrackCount--">getTrackCount</a></span>()</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/commons/io/FileCleaningTracker.html#getTrackCount--"><code>FileCleaningTracker.getTrackCount()</code></a>.</span></div>
</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FileCleaner.html#track-java.io.File-java.lang.Object-">track</a></span>(<a href="https://docs.oracle.com/javase/7/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;file,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;marker)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/commons/io/FileCleaningTracker.html#track-java.io.File-java.lang.Object-"><code>FileCleaningTracker.track(File, Object)</code></a>.</span></div>
</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FileCleaner.html#track-java.io.File-java.lang.Object-org.apache.commons.io.FileDeleteStrategy-">track</a></span>(<a href="https://docs.oracle.com/javase/7/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;file,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;marker,
<a href="../../../../org/apache/commons/io/FileDeleteStrategy.html" title="class in org.apache.commons.io">FileDeleteStrategy</a>&nbsp;deleteStrategy)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/commons/io/FileCleaningTracker.html#track-java.io.File-java.lang.Object-org.apache.commons.io.FileDeleteStrategy-"><code>FileCleaningTracker.track(File, Object, FileDeleteStrategy)</code></a>.</span></div>
</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FileCleaner.html#track-java.lang.String-java.lang.Object-">track</a></span>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;path,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;marker)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/commons/io/FileCleaningTracker.html#track-java.lang.String-java.lang.Object-"><code>FileCleaningTracker.track(String, Object)</code></a>.</span></div>
</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FileCleaner.html#track-java.lang.String-java.lang.Object-org.apache.commons.io.FileDeleteStrategy-">track</a></span>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;path,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;marker,
<a href="../../../../org/apache/commons/io/FileDeleteStrategy.html" title="class in org.apache.commons.io">FileDeleteStrategy</a>&nbsp;deleteStrategy)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/commons/io/FileCleaningTracker.html#track-java.lang.String-java.lang.Object-org.apache.commons.io.FileDeleteStrategy-"><code>FileCleaningTracker.track(String, Object, FileDeleteStrategy)</code></a>.</span></div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://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="https://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="https://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="https://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="https://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="https://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="https://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="https://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="https://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="https://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="https://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="https://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>
</ul>
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<h4>FileCleaner</h4>
<pre>public&nbsp;FileCleaner()</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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<h4>track</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public static&nbsp;void&nbsp;track(<a href="https://docs.oracle.com/javase/7/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;file,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;marker)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Use <a href="../../../../org/apache/commons/io/FileCleaningTracker.html#track-java.io.File-java.lang.Object-"><code>FileCleaningTracker.track(File, Object)</code></a>.</span></div>
<div class="block">Track the specified file, using the provided marker, deleting the file
when the marker instance is garbage collected.
The <a href="../../../../org/apache/commons/io/FileDeleteStrategy.html#NORMAL"><code>normal</code></a> deletion strategy will be used.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>file</code> - the file to be tracked, not null</dd>
<dd><code>marker</code> - the marker object used to track the file, not null</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</a></code> - if the file is null</dd>
</dl>
</li>
</ul>
<a name="track-java.io.File-java.lang.Object-org.apache.commons.io.FileDeleteStrategy-">
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<h4>track</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public static&nbsp;void&nbsp;track(<a href="https://docs.oracle.com/javase/7/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;file,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;marker,
<a href="../../../../org/apache/commons/io/FileDeleteStrategy.html" title="class in org.apache.commons.io">FileDeleteStrategy</a>&nbsp;deleteStrategy)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Use <a href="../../../../org/apache/commons/io/FileCleaningTracker.html#track-java.io.File-java.lang.Object-org.apache.commons.io.FileDeleteStrategy-"><code>FileCleaningTracker.track(File, Object, FileDeleteStrategy)</code></a>.</span></div>
<div class="block">Track the specified file, using the provided marker, deleting the file
when the marker instance is garbage collected.
The specified deletion strategy is used.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>file</code> - the file to be tracked, not null</dd>
<dd><code>marker</code> - the marker object used to track the file, not null</dd>
<dd><code>deleteStrategy</code> - the strategy to delete the file, null means normal</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</a></code> - if the file is null</dd>
</dl>
</li>
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<h4>track</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public static&nbsp;void&nbsp;track(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;path,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;marker)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Use <a href="../../../../org/apache/commons/io/FileCleaningTracker.html#track-java.lang.String-java.lang.Object-"><code>FileCleaningTracker.track(String, Object)</code></a>.</span></div>
<div class="block">Track the specified file, using the provided marker, deleting the file
when the marker instance is garbage collected.
The <a href="../../../../org/apache/commons/io/FileDeleteStrategy.html#NORMAL"><code>normal</code></a> deletion strategy will be used.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>path</code> - the full path to the file to be tracked, not null</dd>
<dd><code>marker</code> - the marker object used to track the file, not null</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</a></code> - if the path is null</dd>
</dl>
</li>
</ul>
<a name="track-java.lang.String-java.lang.Object-org.apache.commons.io.FileDeleteStrategy-">
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<h4>track</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public static&nbsp;void&nbsp;track(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;path,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;marker,
<a href="../../../../org/apache/commons/io/FileDeleteStrategy.html" title="class in org.apache.commons.io">FileDeleteStrategy</a>&nbsp;deleteStrategy)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Use <a href="../../../../org/apache/commons/io/FileCleaningTracker.html#track-java.lang.String-java.lang.Object-org.apache.commons.io.FileDeleteStrategy-"><code>FileCleaningTracker.track(String, Object, FileDeleteStrategy)</code></a>.</span></div>
<div class="block">Track the specified file, using the provided marker, deleting the file
when the marker instance is garbage collected.
The specified deletion strategy is used.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>path</code> - the full path to the file to be tracked, not null</dd>
<dd><code>marker</code> - the marker object used to track the file, not null</dd>
<dd><code>deleteStrategy</code> - the strategy to delete the file, null means normal</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</a></code> - if the path is null</dd>
</dl>
</li>
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<a name="getTrackCount--">
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<h4>getTrackCount</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public static&nbsp;int&nbsp;getTrackCount()</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Use <a href="../../../../org/apache/commons/io/FileCleaningTracker.html#getTrackCount--"><code>FileCleaningTracker.getTrackCount()</code></a>.</span></div>
<div class="block">Retrieve the number of files currently being tracked, and therefore
awaiting deletion.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the number of files being tracked</dd>
</dl>
</li>
</ul>
<a name="exitWhenFinished--">
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<h4>exitWhenFinished</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public static&nbsp;void&nbsp;exitWhenFinished()</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Use <a href="../../../../org/apache/commons/io/FileCleaningTracker.html#exitWhenFinished--"><code>FileCleaningTracker.exitWhenFinished()</code></a>.</span></div>
<div class="block">Call this method to cause the file cleaner thread to terminate when
there are no more objects being tracked for deletion.
<p>
In a simple environment, you don't need this method as the file cleaner
thread will simply exit when the JVM exits. In a more complex environment,
with multiple class loaders (such as an application server), you should be
aware that the file cleaner thread will continue running even if the class
loader it was started from terminates. This can constitute a memory leak.
<p>
For example, suppose that you have developed a web application, which
contains the commons-io jar file in your WEB-INF/lib directory. In other
words, the FileCleaner class is loaded through the class loader of your
web application. If the web application is terminated, but the servlet
container is still running, then the file cleaner thread will still exist,
posing a memory leak.
<p>
This method allows the thread to be terminated. Simply call this method
in the resource cleanup code, such as
<code>javax.servlet.ServletContextListener.contextDestroyed(javax.servlet.ServletContextEvent)</code>.
One called, no new objects can be tracked by the file cleaner.</div>
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<h4>getInstance</h4>
<pre>public static&nbsp;<a href="../../../../org/apache/commons/io/FileCleaningTracker.html" title="class in org.apache.commons.io">FileCleaningTracker</a>&nbsp;getInstance()</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Returns the singleton instance, which is used by the deprecated, static methods.
This is mainly useful for code, which wants to support the new
<a href="../../../../org/apache/commons/io/FileCleaningTracker.html" title="class in org.apache.commons.io"><code>FileCleaningTracker</code></a> class while maintain compatibility with the
deprecated <a href="../../../../org/apache/commons/io/FileCleaner.html" title="class in org.apache.commons.io"><code>FileCleaner</code></a>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the singleton instance</dd>
</dl>
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