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<div class="subTitle">org.apache.commons.io</div>
<h2 title="Class FilenameUtils" class="title">Class FilenameUtils</h2>
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<li>org.apache.commons.io.FilenameUtils</li>
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<pre>public class <span class="typeNameLabel">FilenameUtils</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">General file name and file path manipulation utilities.
<p>
When dealing with file names you can hit problems when moving from a Windows
based development machine to a Unix based production machine.
This class aims to help avoid those problems.
<p>
<b>NOTE</b>: You may be able to avoid using this class entirely simply by
using JDK <a href="https://docs.oracle.com/javase/7/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io"><code>File</code></a> objects and the two argument constructor
<a href="https://docs.oracle.com/javase/7/docs/api/java/io/File.html?is-external=true#File-java.io.File-java.lang.String-" title="class or interface in java.io"><code>File(File,String)</code></a>.
<p>
Most methods on this class are designed to work the same on both Unix and Windows.
Those that don't include 'System', 'Unix' or 'Windows' in their name.
<p>
Most methods recognize both separators (forward and back), and both
sets of prefixes. See the Javadoc of each method for details.
<p>
This class defines six components within a file name
(example C:\dev\project\file.txt):
<ul>
<li>the prefix - C:\</li>
<li>the path - dev\project\</li>
<li>the full path - C:\dev\project\</li>
<li>the name - file.txt</li>
<li>the base name - file</li>
<li>the extension - txt</li>
</ul>
Note that this class works best if directory file names end with a separator.
If you omit the last separator, it is impossible to determine if the file name
corresponds to a file or a directory. As a result, we have chosen to say
it corresponds to a file.
<p>
This class only supports Unix and Windows style names.
Prefixes are matched as follows:
<pre>
Windows:
a\b\c.txt --&gt; "" --&gt; relative
\a\b\c.txt --&gt; "\" --&gt; current drive absolute
C:a\b\c.txt --&gt; "C:" --&gt; drive relative
C:\a\b\c.txt --&gt; "C:\" --&gt; absolute
\\server\a\b\c.txt --&gt; "\\server\" --&gt; UNC
Unix:
a/b/c.txt --&gt; "" --&gt; relative
/a/b/c.txt --&gt; "/" --&gt; absolute
~/a/b/c.txt --&gt; "~/" --&gt; current user
~ --&gt; "~/" --&gt; current user (slash added)
~user/a/b/c.txt --&gt; "~user/" --&gt; named user
~user --&gt; "~user/" --&gt; named user (slash added)
</pre>
Both prefix styles are matched always, irrespective of the machine that you are
currently running on.
<p>
Origin of code: Excalibur, Alexandria, Tomcat, Commons-Utils.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1</dd>
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<td class="colFirst"><code>static char</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#EXTENSION_SEPARATOR">EXTENSION_SEPARATOR</a></span></code>
<div class="block">The extension separator character.</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#EXTENSION_SEPARATOR_STR">EXTENSION_SEPARATOR_STR</a></span></code>
<div class="block">The extension separator String.</div>
</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#FilenameUtils--">FilenameUtils</a></span>()</code>
<div class="block">Instances should NOT be constructed in standard programming.</div>
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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></caption>
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<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#concat-java.lang.String-java.lang.String-">concat</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;basePath,
<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;fullFileNameToAdd)</code>
<div class="block">Concatenates a fileName to a base path using normal command line style rules.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#directoryContains-java.lang.String-java.lang.String-">directoryContains</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;canonicalParent,
<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;canonicalChild)</code>
<div class="block">Determines whether the <code>parent</code> directory contains the <code>child</code> element (a file or directory).</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#equals-java.lang.String-java.lang.String-">equals</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;fileName1,
<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;fileName2)</code>
<div class="block">Checks whether two fileNames are equal exactly.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#equals-java.lang.String-java.lang.String-boolean-org.apache.commons.io.IOCase-">equals</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;fileName1,
<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;fileName2,
boolean&nbsp;normalized,
<a href="../../../../org/apache/commons/io/IOCase.html" title="enum in org.apache.commons.io">IOCase</a>&nbsp;caseSensitivity)</code>
<div class="block">Checks whether two fileNames are equal, optionally normalizing and providing
control over the case-sensitivity.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#equalsNormalized-java.lang.String-java.lang.String-">equalsNormalized</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;fileName1,
<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;fileName2)</code>
<div class="block">Checks whether two fileNames are equal after both have been normalized.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#equalsNormalizedOnSystem-java.lang.String-java.lang.String-">equalsNormalizedOnSystem</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;fileName1,
<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;fileName2)</code>
<div class="block">Checks whether two fileNames are equal after both have been normalized
and using the case rules of the system.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#equalsOnSystem-java.lang.String-java.lang.String-">equalsOnSystem</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;fileName1,
<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;fileName2)</code>
<div class="block">Checks whether two fileNames are equal using the case rules of the system.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#getBaseName-java.lang.String-">getBaseName</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;fileName)</code>
<div class="block">Gets the base name, minus the full path and extension, from a full fileName.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#getExtension-java.lang.String-">getExtension</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;fileName)</code>
<div class="block">Gets the extension of a fileName.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#getFullPath-java.lang.String-">getFullPath</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;fileName)</code>
<div class="block">Gets the full path from a full fileName, which is the prefix + path.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#getFullPathNoEndSeparator-java.lang.String-">getFullPathNoEndSeparator</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;fileName)</code>
<div class="block">Gets the full path from a full fileName, which is the prefix + path,
and also excluding the final directory separator.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#getName-java.lang.String-">getName</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;fileName)</code>
<div class="block">Gets the name minus the path from a full fileName.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#getPath-java.lang.String-">getPath</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;fileName)</code>
<div class="block">Gets the path from a full fileName, which excludes the prefix.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#getPathNoEndSeparator-java.lang.String-">getPathNoEndSeparator</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;fileName)</code>
<div class="block">Gets the path from a full fileName, which excludes the prefix, and
also excluding the final directory separator.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#getPrefix-java.lang.String-">getPrefix</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;fileName)</code>
<div class="block">Gets the prefix from a full fileName, such as <code>C:/</code>
or <code>~/</code>.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#getPrefixLength-java.lang.String-">getPrefixLength</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;fileName)</code>
<div class="block">Returns the length of the fileName prefix, such as <code>C:/</code> or <code>~/</code>.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#indexOfExtension-java.lang.String-">indexOfExtension</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;fileName)</code>
<div class="block">Returns the index of the last extension separator character, which is a dot.</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#indexOfLastSeparator-java.lang.String-">indexOfLastSeparator</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;fileName)</code>
<div class="block">Returns the index of the last directory separator character.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#isExtension-java.lang.String-java.util.Collection-">isExtension</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;fileName,
<a href="https://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<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>&gt;&nbsp;extensions)</code>
<div class="block">Checks whether the extension of the fileName is one of those specified.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#isExtension-java.lang.String-java.lang.String...-">isExtension</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;fileName,
<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;extensions)</code>
<div class="block">Checks whether the extension of the fileName is one of those specified.</div>
</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#isExtension-java.lang.String-java.lang.String-">isExtension</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;fileName,
<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;extension)</code>
<div class="block">Checks whether the extension of the fileName is that specified.</div>
</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#normalize-java.lang.String-">normalize</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;fileName)</code>
<div class="block">Normalizes a path, removing double and single dot path steps.</div>
</td>
</tr>
<tr id="i22" class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#normalize-java.lang.String-boolean-">normalize</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;fileName,
boolean&nbsp;unixSeparator)</code>
<div class="block">Normalizes a path, removing double and single dot path steps.</div>
</td>
</tr>
<tr id="i23" class="rowColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#normalizeNoEndSeparator-java.lang.String-">normalizeNoEndSeparator</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;fileName)</code>
<div class="block">Normalizes a path, removing double and single dot path steps,
and removing any final directory separator.</div>
</td>
</tr>
<tr id="i24" class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#normalizeNoEndSeparator-java.lang.String-boolean-">normalizeNoEndSeparator</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;fileName,
boolean&nbsp;unixSeparator)</code>
<div class="block">Normalizes a path, removing double and single dot path steps,
and removing any final directory separator.</div>
</td>
</tr>
<tr id="i25" class="rowColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#removeExtension-java.lang.String-">removeExtension</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;fileName)</code>
<div class="block">Removes the extension from a fileName.</div>
</td>
</tr>
<tr id="i26" class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#separatorsToSystem-java.lang.String-">separatorsToSystem</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)</code>
<div class="block">Converts all separators to the system separator.</div>
</td>
</tr>
<tr id="i27" class="rowColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#separatorsToUnix-java.lang.String-">separatorsToUnix</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)</code>
<div class="block">Converts all separators to the Unix separator of forward slash.</div>
</td>
</tr>
<tr id="i28" class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#separatorsToWindows-java.lang.String-">separatorsToWindows</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)</code>
<div class="block">Converts all separators to the Windows separator of backslash.</div>
</td>
</tr>
<tr id="i29" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#wildcardMatch-java.lang.String-java.lang.String-">wildcardMatch</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;fileName,
<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;wildcardMatcher)</code>
<div class="block">Checks a fileName to see if it matches the specified wildcard matcher,
always testing case-sensitive.</div>
</td>
</tr>
<tr id="i30" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#wildcardMatch-java.lang.String-java.lang.String-org.apache.commons.io.IOCase-">wildcardMatch</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;fileName,
<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;wildcardMatcher,
<a href="../../../../org/apache/commons/io/IOCase.html" title="enum in org.apache.commons.io">IOCase</a>&nbsp;caseSensitivity)</code>
<div class="block">Checks a fileName to see if it matches the specified wildcard matcher
allowing control over case-sensitivity.</div>
</td>
</tr>
<tr id="i31" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/commons/io/FilenameUtils.html#wildcardMatchOnSystem-java.lang.String-java.lang.String-">wildcardMatchOnSystem</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;fileName,
<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;wildcardMatcher)</code>
<div class="block">Checks a fileName to see if it matches the specified wildcard matcher
using the case rules of the system.</div>
</td>
</tr>
</table>
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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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<h3>Field Detail</h3>
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<h4>EXTENSION_SEPARATOR</h4>
<pre>public static final&nbsp;char EXTENSION_SEPARATOR</pre>
<div class="block">The extension separator character.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.4</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../constant-values.html#org.apache.commons.io.FilenameUtils.EXTENSION_SEPARATOR">Constant Field Values</a></dd>
</dl>
</li>
</ul>
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<pre>public static final&nbsp;<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> EXTENSION_SEPARATOR_STR</pre>
<div class="block">The extension separator String.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.4</dd>
</dl>
</li>
</ul>
</li>
</ul>
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<h4>FilenameUtils</h4>
<pre>public&nbsp;FilenameUtils()</pre>
<div class="block">Instances should NOT be constructed in standard programming.</div>
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<h3>Method Detail</h3>
<a name="normalize-java.lang.String-">
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<h4>normalize</h4>
<pre>public static&nbsp;<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;normalize(<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;fileName)</pre>
<div class="block">Normalizes a path, removing double and single dot path steps.
<p>
This method normalizes a path to a standard format.
The input may contain separators in either Unix or Windows format.
The output will contain separators in the format of the system.
<p>
A trailing slash will be retained.
A double slash will be merged to a single slash (but UNC names are handled).
A single dot path segment will be removed.
A double dot will cause that path segment and the one before to be removed.
If the double dot has no parent path segment to work with, <code>null</code>
is returned.
<p>
The output will be the same on both Unix and Windows except
for the separator character.
<pre>
/foo// --&gt; /foo/
/foo/./ --&gt; /foo/
/foo/../bar --&gt; /bar
/foo/../bar/ --&gt; /bar/
/foo/../bar/../baz --&gt; /baz
//foo//./bar --&gt; /foo/bar
/../ --&gt; null
../foo --&gt; null
foo/bar/.. --&gt; foo/
foo/../../bar --&gt; null
foo/../bar --&gt; bar
//server/foo/../bar --&gt; //server/bar
//server/../bar --&gt; null
C:\foo\..\bar --&gt; C:\bar
C:\..\bar --&gt; null
~/foo/../bar/ --&gt; ~/bar/
~/../bar --&gt; null
</pre>
(Note the file separator returned will be correct for Windows/Unix)</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to normalize, null returns null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the normalized fileName, or null if invalid. Null bytes inside string will be removed</dd>
</dl>
</li>
</ul>
<a name="normalize-java.lang.String-boolean-">
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<h4>normalize</h4>
<pre>public static&nbsp;<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;normalize(<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;fileName,
boolean&nbsp;unixSeparator)</pre>
<div class="block">Normalizes a path, removing double and single dot path steps.
<p>
This method normalizes a path to a standard format.
The input may contain separators in either Unix or Windows format.
The output will contain separators in the format specified.
<p>
A trailing slash will be retained.
A double slash will be merged to a single slash (but UNC names are handled).
A single dot path segment will be removed.
A double dot will cause that path segment and the one before to be removed.
If the double dot has no parent path segment to work with, <code>null</code>
is returned.
<p>
The output will be the same on both Unix and Windows except
for the separator character.
<pre>
/foo// --&gt; /foo/
/foo/./ --&gt; /foo/
/foo/../bar --&gt; /bar
/foo/../bar/ --&gt; /bar/
/foo/../bar/../baz --&gt; /baz
//foo//./bar --&gt; /foo/bar
/../ --&gt; null
../foo --&gt; null
foo/bar/.. --&gt; foo/
foo/../../bar --&gt; null
foo/../bar --&gt; bar
//server/foo/../bar --&gt; //server/bar
//server/../bar --&gt; null
C:\foo\..\bar --&gt; C:\bar
C:\..\bar --&gt; null
~/foo/../bar/ --&gt; ~/bar/
~/../bar --&gt; null
</pre>
The output will be the same on both Unix and Windows including
the separator character.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to normalize, null returns null</dd>
<dd><code>unixSeparator</code> - <code>true</code> if a unix separator should
be used or <code>false</code> if a windows separator should be used.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the normalized fileName, or null if invalid. Null bytes inside string will be removed</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.0</dd>
</dl>
</li>
</ul>
<a name="normalizeNoEndSeparator-java.lang.String-">
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<h4>normalizeNoEndSeparator</h4>
<pre>public static&nbsp;<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;normalizeNoEndSeparator(<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;fileName)</pre>
<div class="block">Normalizes a path, removing double and single dot path steps,
and removing any final directory separator.
<p>
This method normalizes a path to a standard format.
The input may contain separators in either Unix or Windows format.
The output will contain separators in the format of the system.
<p>
A trailing slash will be removed.
A double slash will be merged to a single slash (but UNC names are handled).
A single dot path segment will be removed.
A double dot will cause that path segment and the one before to be removed.
If the double dot has no parent path segment to work with, <code>null</code>
is returned.
<p>
The output will be the same on both Unix and Windows except
for the separator character.
<pre>
/foo// --&gt; /foo
/foo/./ --&gt; /foo
/foo/../bar --&gt; /bar
/foo/../bar/ --&gt; /bar
/foo/../bar/../baz --&gt; /baz
//foo//./bar --&gt; /foo/bar
/../ --&gt; null
../foo --&gt; null
foo/bar/.. --&gt; foo
foo/../../bar --&gt; null
foo/../bar --&gt; bar
//server/foo/../bar --&gt; //server/bar
//server/../bar --&gt; null
C:\foo\..\bar --&gt; C:\bar
C:\..\bar --&gt; null
~/foo/../bar/ --&gt; ~/bar
~/../bar --&gt; null
</pre>
(Note the file separator returned will be correct for Windows/Unix)</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to normalize, null returns null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the normalized fileName, or null if invalid. Null bytes inside string will be removed</dd>
</dl>
</li>
</ul>
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<h4>normalizeNoEndSeparator</h4>
<pre>public static&nbsp;<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;normalizeNoEndSeparator(<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;fileName,
boolean&nbsp;unixSeparator)</pre>
<div class="block">Normalizes a path, removing double and single dot path steps,
and removing any final directory separator.
<p>
This method normalizes a path to a standard format.
The input may contain separators in either Unix or Windows format.
The output will contain separators in the format specified.
<p>
A trailing slash will be removed.
A double slash will be merged to a single slash (but UNC names are handled).
A single dot path segment will be removed.
A double dot will cause that path segment and the one before to be removed.
If the double dot has no parent path segment to work with, <code>null</code>
is returned.
<p>
The output will be the same on both Unix and Windows including
the separator character.
<pre>
/foo// --&gt; /foo
/foo/./ --&gt; /foo
/foo/../bar --&gt; /bar
/foo/../bar/ --&gt; /bar
/foo/../bar/../baz --&gt; /baz
//foo//./bar --&gt; /foo/bar
/../ --&gt; null
../foo --&gt; null
foo/bar/.. --&gt; foo
foo/../../bar --&gt; null
foo/../bar --&gt; bar
//server/foo/../bar --&gt; //server/bar
//server/../bar --&gt; null
C:\foo\..\bar --&gt; C:\bar
C:\..\bar --&gt; null
~/foo/../bar/ --&gt; ~/bar
~/../bar --&gt; null
</pre></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to normalize, null returns null</dd>
<dd><code>unixSeparator</code> - <code>true</code> if a unix separator should
be used or <code>false</code> if a windows separator should be used.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the normalized fileName, or null if invalid. Null bytes inside string will be removed</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.0</dd>
</dl>
</li>
</ul>
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<h4>concat</h4>
<pre>public static&nbsp;<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;concat(<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;basePath,
<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;fullFileNameToAdd)</pre>
<div class="block">Concatenates a fileName to a base path using normal command line style rules.
<p>
The effect is equivalent to resultant directory after changing
directory to the first argument, followed by changing directory to
the second argument.
<p>
The first argument is the base path, the second is the path to concatenate.
The returned path is always normalized via <a href="../../../../org/apache/commons/io/FilenameUtils.html#normalize-java.lang.String-"><code>normalize(String)</code></a>,
thus <code>..</code> is handled.
<p>
If <code>pathToAdd</code> is absolute (has an absolute prefix), then
it will be normalized and returned.
Otherwise, the paths will be joined, normalized and returned.
<p>
The output will be the same on both Unix and Windows except
for the separator character.
<pre>
/foo/ + bar --&gt; /foo/bar
/foo + bar --&gt; /foo/bar
/foo + /bar --&gt; /bar
/foo + C:/bar --&gt; C:/bar
/foo + C:bar --&gt; C:bar (*)
/foo/a/ + ../bar --&gt; /foo/bar
/foo/ + ../../bar --&gt; null
/foo/ + /bar --&gt; /bar
/foo/.. + /bar --&gt; /bar
/foo + bar/c.txt --&gt; /foo/bar/c.txt
/foo/c.txt + bar --&gt; /foo/c.txt/bar (!)
</pre>
(*) Note that the Windows relative drive prefix is unreliable when
used with this method.
(!) Note that the first parameter must be a path. If it ends with a name, then
the name will be built into the concatenated path. If this might be a problem,
use <a href="../../../../org/apache/commons/io/FilenameUtils.html#getFullPath-java.lang.String-"><code>getFullPath(String)</code></a> on the base path argument.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>basePath</code> - the base path to attach to, always treated as a path</dd>
<dd><code>fullFileNameToAdd</code> - the fileName (or path) to attach to the base</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the concatenated path, or null if invalid. Null bytes inside string will be removed</dd>
</dl>
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<pre>public static&nbsp;boolean&nbsp;directoryContains(<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;canonicalParent,
<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;canonicalChild)</pre>
<div class="block">Determines whether the <code>parent</code> directory contains the <code>child</code> element (a file or directory).
<p>
The files names are expected to be normalized.
</p>
Edge cases:
<ul>
<li>A <code>directory</code> must not be null: if null, throw IllegalArgumentException</li>
<li>A directory does not contain itself: return false</li>
<li>A null child file is not contained in any parent: return false</li>
</ul></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>canonicalParent</code> - the file to consider as the parent.</dd>
<dd><code>canonicalChild</code> - the file to consider as the child.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true is the candidate leaf is under by the specified composite. False otherwise.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.2</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../org/apache/commons/io/FileUtils.html#directoryContains-java.io.File-java.io.File-"><code>FileUtils.directoryContains(File, File)</code></a></dd>
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<pre>public static&nbsp;<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;separatorsToUnix(<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)</pre>
<div class="block">Converts all separators to the Unix separator of forward slash.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>path</code> - the path to be changed, null ignored</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the updated path</dd>
</dl>
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<pre>public static&nbsp;<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;separatorsToWindows(<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)</pre>
<div class="block">Converts all separators to the Windows separator of backslash.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>path</code> - the path to be changed, null ignored</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the updated path</dd>
</dl>
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<pre>public static&nbsp;<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;separatorsToSystem(<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)</pre>
<div class="block">Converts all separators to the system separator.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>path</code> - the path to be changed, null ignored</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the updated path</dd>
</dl>
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<pre>public static&nbsp;int&nbsp;getPrefixLength(<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;fileName)</pre>
<div class="block">Returns the length of the fileName prefix, such as <code>C:/</code> or <code>~/</code>.
<p>
This method will handle a file in either Unix or Windows format.
<p>
The prefix length includes the first slash in the full fileName
if applicable. Thus, it is possible that the length returned is greater
than the length of the input string.
<pre>
Windows:
a\b\c.txt --&gt; 0 --&gt; relative
\a\b\c.txt --&gt; 1 --&gt; current drive absolute
C:a\b\c.txt --&gt; 2 --&gt; drive relative
C:\a\b\c.txt --&gt; 3 --&gt; absolute
\\server\a\b\c.txt --&gt; 9 --&gt; UNC
\\\a\b\c.txt --&gt; -1 --&gt; error
Unix:
a/b/c.txt --&gt; 0 --&gt; relative
/a/b/c.txt --&gt; 1 --&gt; absolute
~/a/b/c.txt --&gt; 2 --&gt; current user
~ --&gt; 2 --&gt; current user (slash added)
~user/a/b/c.txt --&gt; 6 --&gt; named user
~user --&gt; 6 --&gt; named user (slash added)
//server/a/b/c.txt --&gt; 9
///a/b/c.txt --&gt; -1 --&gt; error
C: --&gt; 0 --&gt; valid filename as only null byte and / are reserved characters
</pre>
<p>
The output will be the same irrespective of the machine that the code is running on.
ie. both Unix and Windows prefixes are matched regardless.
Note that a leading // (or \\) is used to indicate a UNC name on Windows.
These must be followed by a server name, so double-slashes are not collapsed
to a single slash at the start of the fileName.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to find the prefix in, null returns -1</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the length of the prefix, -1 if invalid or null</dd>
</dl>
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<pre>public static&nbsp;int&nbsp;indexOfLastSeparator(<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;fileName)</pre>
<div class="block">Returns the index of the last directory separator character.
<p>
This method will handle a file in either Unix or Windows format.
The position of the last forward or backslash is returned.
<p>
The output will be the same irrespective of the machine that the code is running on.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to find the last path separator in, null returns -1</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the index of the last separator character, or -1 if there
is no such character</dd>
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<pre>public static&nbsp;int&nbsp;indexOfExtension(<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;fileName)
throws <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></pre>
<div class="block">Returns the index of the last extension separator character, which is a dot.
<p>
This method also checks that there is no directory separator after the last dot. To do this it uses
<a href="../../../../org/apache/commons/io/FilenameUtils.html#indexOfLastSeparator-java.lang.String-"><code>indexOfLastSeparator(String)</code></a> which will handle a file in either Unix or Windows format.
</p>
<p>
The output will be the same irrespective of the machine that the code is running on, with the
exception of a possible <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang"><code>IllegalArgumentException</code></a> on Windows (see below).
</p>
<b>Note:</b> This method used to have a hidden problem for names like "foo.exe:bar.txt".
In this case, the name wouldn't be the name of a file, but the identifier of an
alternate data stream (bar.txt) on the file foo.exe. The method used to return
".txt" here, which would be misleading. Commons IO 2.7, and later versions, are throwing
an <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang"><code>IllegalArgumentException</code></a> for names like this.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to find the last extension separator in, null returns -1</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the index of the last extension separator character, or -1 if there is no such character</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - <b>Windows only:</b> The fileName parameter is, in fact,
the identifier of an Alternate Data Stream, for example "foo.exe:bar.txt".</dd>
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<pre>public static&nbsp;<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;getPrefix(<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;fileName)</pre>
<div class="block">Gets the prefix from a full fileName, such as <code>C:/</code>
or <code>~/</code>.
<p>
This method will handle a file in either Unix or Windows format.
The prefix includes the first slash in the full fileName where applicable.
<pre>
Windows:
a\b\c.txt --&gt; "" --&gt; relative
\a\b\c.txt --&gt; "\" --&gt; current drive absolute
C:a\b\c.txt --&gt; "C:" --&gt; drive relative
C:\a\b\c.txt --&gt; "C:\" --&gt; absolute
\\server\a\b\c.txt --&gt; "\\server\" --&gt; UNC
Unix:
a/b/c.txt --&gt; "" --&gt; relative
/a/b/c.txt --&gt; "/" --&gt; absolute
~/a/b/c.txt --&gt; "~/" --&gt; current user
~ --&gt; "~/" --&gt; current user (slash added)
~user/a/b/c.txt --&gt; "~user/" --&gt; named user
~user --&gt; "~user/" --&gt; named user (slash added)
</pre>
<p>
The output will be the same irrespective of the machine that the code is running on.
ie. both Unix and Windows prefixes are matched regardless.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to query, null returns null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the prefix of the file, null if invalid. Null bytes inside string will be removed</dd>
</dl>
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<pre>public static&nbsp;<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;getPath(<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;fileName)</pre>
<div class="block">Gets the path from a full fileName, which excludes the prefix.
<p>
This method will handle a file in either Unix or Windows format.
The method is entirely text based, and returns the text before and
including the last forward or backslash.
<pre>
C:\a\b\c.txt --&gt; a\b\
~/a/b/c.txt --&gt; a/b/
a.txt --&gt; ""
a/b/c --&gt; a/b/
a/b/c/ --&gt; a/b/c/
</pre>
<p>
The output will be the same irrespective of the machine that the code is running on.
<p>
This method drops the prefix from the result.
See <a href="../../../../org/apache/commons/io/FilenameUtils.html#getFullPath-java.lang.String-"><code>getFullPath(String)</code></a> for the method that retains the prefix.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to query, null returns null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the path of the file, an empty string if none exists, null if invalid.
Null bytes inside string will be removed</dd>
</dl>
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<pre>public static&nbsp;<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;getPathNoEndSeparator(<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;fileName)</pre>
<div class="block">Gets the path from a full fileName, which excludes the prefix, and
also excluding the final directory separator.
<p>
This method will handle a file in either Unix or Windows format.
The method is entirely text based, and returns the text before the
last forward or backslash.
<pre>
C:\a\b\c.txt --&gt; a\b
~/a/b/c.txt --&gt; a/b
a.txt --&gt; ""
a/b/c --&gt; a/b
a/b/c/ --&gt; a/b/c
</pre>
<p>
The output will be the same irrespective of the machine that the code is running on.
<p>
This method drops the prefix from the result.
See <a href="../../../../org/apache/commons/io/FilenameUtils.html#getFullPathNoEndSeparator-java.lang.String-"><code>getFullPathNoEndSeparator(String)</code></a> for the method that retains the prefix.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to query, null returns null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the path of the file, an empty string if none exists, null if invalid.
Null bytes inside string will be removed</dd>
</dl>
</li>
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<pre>public static&nbsp;<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;getFullPath(<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;fileName)</pre>
<div class="block">Gets the full path from a full fileName, which is the prefix + path.
<p>
This method will handle a file in either Unix or Windows format.
The method is entirely text based, and returns the text before and
including the last forward or backslash.
<pre>
C:\a\b\c.txt --&gt; C:\a\b\
~/a/b/c.txt --&gt; ~/a/b/
a.txt --&gt; ""
a/b/c --&gt; a/b/
a/b/c/ --&gt; a/b/c/
C: --&gt; C:
C:\ --&gt; C:\
~ --&gt; ~/
~/ --&gt; ~/
~user --&gt; ~user/
~user/ --&gt; ~user/
</pre>
<p>
The output will be the same irrespective of the machine that the code is running on.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to query, null returns null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the path of the file, an empty string if none exists, null if invalid</dd>
</dl>
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<pre>public static&nbsp;<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;getFullPathNoEndSeparator(<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;fileName)</pre>
<div class="block">Gets the full path from a full fileName, which is the prefix + path,
and also excluding the final directory separator.
<p>
This method will handle a file in either Unix or Windows format.
The method is entirely text based, and returns the text before the
last forward or backslash.
<pre>
C:\a\b\c.txt --&gt; C:\a\b
~/a/b/c.txt --&gt; ~/a/b
a.txt --&gt; ""
a/b/c --&gt; a/b
a/b/c/ --&gt; a/b/c
C: --&gt; C:
C:\ --&gt; C:\
~ --&gt; ~
~/ --&gt; ~
~user --&gt; ~user
~user/ --&gt; ~user
</pre>
<p>
The output will be the same irrespective of the machine that the code is running on.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to query, null returns null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the path of the file, an empty string if none exists, null if invalid</dd>
</dl>
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<pre>public static&nbsp;<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;getName(<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;fileName)</pre>
<div class="block">Gets the name minus the path from a full fileName.
<p>
This method will handle a file in either Unix or Windows format.
The text after the last forward or backslash is returned.
<pre>
a/b/c.txt --&gt; c.txt
a.txt --&gt; a.txt
a/b/c --&gt; c
a/b/c/ --&gt; ""
</pre>
<p>
The output will be the same irrespective of the machine that the code is running on.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to query, null returns null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the name of the file without the path, or an empty string if none exists.
Null bytes inside string will be removed</dd>
</dl>
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<pre>public static&nbsp;<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;getBaseName(<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;fileName)</pre>
<div class="block">Gets the base name, minus the full path and extension, from a full fileName.
<p>
This method will handle a file in either Unix or Windows format.
The text after the last forward or backslash and before the last dot is returned.
<pre>
a/b/c.txt --&gt; c
a.txt --&gt; a
a/b/c --&gt; c
a/b/c/ --&gt; ""
</pre>
<p>
The output will be the same irrespective of the machine that the code is running on.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to query, null returns null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the name of the file without the path, or an empty string if none exists. Null bytes inside string
will be removed</dd>
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<pre>public static&nbsp;<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;getExtension(<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;fileName)
throws <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></pre>
<div class="block">Gets the extension of a fileName.
<p>
This method returns the textual part of the fileName after the last dot.
There must be no directory separator after the dot.
<pre>
foo.txt --&gt; "txt"
a/b/c.jpg --&gt; "jpg"
a/b.txt/c --&gt; ""
a/b/c --&gt; ""
</pre>
<p>
The output will be the same irrespective of the machine that the code is running on, with the
exception of a possible <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang"><code>IllegalArgumentException</code></a> on Windows (see below).
</p>
<p>
<b>Note:</b> This method used to have a hidden problem for names like "foo.exe:bar.txt".
In this case, the name wouldn't be the name of a file, but the identifier of an
alternate data stream (bar.txt) on the file foo.exe. The method used to return
".txt" here, which would be misleading. Commons IO 2.7, and later versions, are throwing
an <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang"><code>IllegalArgumentException</code></a> for names like this.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to retrieve the extension of.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the extension of the file or an empty string if none exists or <code>null</code>
if the fileName is <code>null</code>.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - <b>Windows only:</b> The fileName parameter is, in fact,
the identifier of an Alternate Data Stream, for example "foo.exe:bar.txt".</dd>
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<h4>removeExtension</h4>
<pre>public static&nbsp;<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;removeExtension(<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;fileName)</pre>
<div class="block">Removes the extension from a fileName.
<p>
This method returns the textual part of the fileName before the last dot.
There must be no directory separator after the dot.
<pre>
foo.txt --&gt; foo
a\b\c.jpg --&gt; a\b\c
a\b\c --&gt; a\b\c
a.b\c --&gt; a.b\c
</pre>
<p>
The output will be the same irrespective of the machine that the code is running on.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to query, null returns null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the fileName minus the extension</dd>
</dl>
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<pre>public static&nbsp;boolean&nbsp;equals(<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;fileName1,
<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;fileName2)</pre>
<div class="block">Checks whether two fileNames are equal exactly.
<p>
No processing is performed on the fileNames other than comparison,
thus this is merely a null-safe case-sensitive equals.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName1</code> - the first fileName to query, may be null</dd>
<dd><code>fileName2</code> - the second fileName to query, may be null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the fileNames are equal, null equals null</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../org/apache/commons/io/IOCase.html#SENSITIVE"><code>IOCase.SENSITIVE</code></a></dd>
</dl>
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<pre>public static&nbsp;boolean&nbsp;equalsOnSystem(<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;fileName1,
<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;fileName2)</pre>
<div class="block">Checks whether two fileNames are equal using the case rules of the system.
<p>
No processing is performed on the fileNames other than comparison.
The check is case-sensitive on Unix and case-insensitive on Windows.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName1</code> - the first fileName to query, may be null</dd>
<dd><code>fileName2</code> - the second fileName to query, may be null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the fileNames are equal, null equals null</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../org/apache/commons/io/IOCase.html#SYSTEM"><code>IOCase.SYSTEM</code></a></dd>
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<pre>public static&nbsp;boolean&nbsp;equalsNormalized(<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;fileName1,
<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;fileName2)</pre>
<div class="block">Checks whether two fileNames are equal after both have been normalized.
<p>
Both fileNames are first passed to <a href="../../../../org/apache/commons/io/FilenameUtils.html#normalize-java.lang.String-"><code>normalize(String)</code></a>.
The check is then performed in a case-sensitive manner.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName1</code> - the first fileName to query, may be null</dd>
<dd><code>fileName2</code> - the second fileName to query, may be null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the fileNames are equal, null equals null</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../org/apache/commons/io/IOCase.html#SENSITIVE"><code>IOCase.SENSITIVE</code></a></dd>
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<pre>public static&nbsp;boolean&nbsp;equalsNormalizedOnSystem(<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;fileName1,
<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;fileName2)</pre>
<div class="block">Checks whether two fileNames are equal after both have been normalized
and using the case rules of the system.
<p>
Both fileNames are first passed to <a href="../../../../org/apache/commons/io/FilenameUtils.html#normalize-java.lang.String-"><code>normalize(String)</code></a>.
The check is then performed case-sensitive on Unix and
case-insensitive on Windows.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName1</code> - the first fileName to query, may be null</dd>
<dd><code>fileName2</code> - the second fileName to query, may be null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the fileNames are equal, null equals null</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../org/apache/commons/io/IOCase.html#SYSTEM"><code>IOCase.SYSTEM</code></a></dd>
</dl>
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<pre>public static&nbsp;boolean&nbsp;equals(<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;fileName1,
<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;fileName2,
boolean&nbsp;normalized,
<a href="../../../../org/apache/commons/io/IOCase.html" title="enum in org.apache.commons.io">IOCase</a>&nbsp;caseSensitivity)</pre>
<div class="block">Checks whether two fileNames are equal, optionally normalizing and providing
control over the case-sensitivity.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName1</code> - the first fileName to query, may be null</dd>
<dd><code>fileName2</code> - the second fileName to query, may be null</dd>
<dd><code>normalized</code> - whether to normalize the fileNames</dd>
<dd><code>caseSensitivity</code> - what case sensitivity rule to use, null means case-sensitive</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the fileNames are equal, null equals null</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.3</dd>
</dl>
</li>
</ul>
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<h4>isExtension</h4>
<pre>public static&nbsp;boolean&nbsp;isExtension(<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;fileName,
<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;extension)</pre>
<div class="block">Checks whether the extension of the fileName is that specified.
<p>
This method obtains the extension as the textual part of the fileName
after the last dot. There must be no directory separator after the dot.
The extension check is case-sensitive on all platforms.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to query, null returns false</dd>
<dd><code>extension</code> - the extension to check for, null or empty checks for no extension</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the fileName has the specified extension</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if the supplied fileName contains null bytes</dd>
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<pre>public static&nbsp;boolean&nbsp;isExtension(<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;fileName,
<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;extensions)</pre>
<div class="block">Checks whether the extension of the fileName is one of those specified.
<p>
This method obtains the extension as the textual part of the fileName
after the last dot. There must be no directory separator after the dot.
The extension check is case-sensitive on all platforms.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to query, null returns false</dd>
<dd><code>extensions</code> - the extensions to check for, null checks for no extension</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the fileName is one of the extensions</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if the supplied fileName contains null bytes</dd>
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<h4>isExtension</h4>
<pre>public static&nbsp;boolean&nbsp;isExtension(<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;fileName,
<a href="https://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<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>&gt;&nbsp;extensions)</pre>
<div class="block">Checks whether the extension of the fileName is one of those specified.
<p>
This method obtains the extension as the textual part of the fileName
after the last dot. There must be no directory separator after the dot.
The extension check is case-sensitive on all platforms.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to query, null returns false</dd>
<dd><code>extensions</code> - the extensions to check for, null checks for no extension</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the fileName is one of the extensions</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if the supplied fileName contains null bytes</dd>
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<h4>wildcardMatch</h4>
<pre>public static&nbsp;boolean&nbsp;wildcardMatch(<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;fileName,
<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;wildcardMatcher)</pre>
<div class="block">Checks a fileName to see if it matches the specified wildcard matcher,
always testing case-sensitive.
<p>
The wildcard matcher uses the characters '?' and '*' to represent a
single or multiple (zero or more) wildcard characters.
This is the same as often found on Dos/Unix command lines.
The check is case-sensitive always.
<pre>
wildcardMatch("c.txt", "*.txt") --&gt; true
wildcardMatch("c.txt", "*.jpg") --&gt; false
wildcardMatch("a/b/c.txt", "a/b/*") --&gt; true
wildcardMatch("c.txt", "*.???") --&gt; true
wildcardMatch("c.txt", "*.????") --&gt; false
</pre>
N.B. the sequence "*?" does not work properly at present in match strings.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to match on</dd>
<dd><code>wildcardMatcher</code> - the wildcard string to match against</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the fileName matches the wildcard string</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../org/apache/commons/io/IOCase.html#SENSITIVE"><code>IOCase.SENSITIVE</code></a></dd>
</dl>
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<pre>public static&nbsp;boolean&nbsp;wildcardMatchOnSystem(<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;fileName,
<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;wildcardMatcher)</pre>
<div class="block">Checks a fileName to see if it matches the specified wildcard matcher
using the case rules of the system.
<p>
The wildcard matcher uses the characters '?' and '*' to represent a
single or multiple (zero or more) wildcard characters.
This is the same as often found on Dos/Unix command lines.
The check is case-sensitive on Unix and case-insensitive on Windows.
<pre>
wildcardMatch("c.txt", "*.txt") --&gt; true
wildcardMatch("c.txt", "*.jpg") --&gt; false
wildcardMatch("a/b/c.txt", "a/b/*") --&gt; true
wildcardMatch("c.txt", "*.???") --&gt; true
wildcardMatch("c.txt", "*.????") --&gt; false
</pre>
N.B. the sequence "*?" does not work properly at present in match strings.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to match on</dd>
<dd><code>wildcardMatcher</code> - the wildcard string to match against</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the fileName matches the wildcard string</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../org/apache/commons/io/IOCase.html#SYSTEM"><code>IOCase.SYSTEM</code></a></dd>
</dl>
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<h4>wildcardMatch</h4>
<pre>public static&nbsp;boolean&nbsp;wildcardMatch(<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;fileName,
<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;wildcardMatcher,
<a href="../../../../org/apache/commons/io/IOCase.html" title="enum in org.apache.commons.io">IOCase</a>&nbsp;caseSensitivity)</pre>
<div class="block">Checks a fileName to see if it matches the specified wildcard matcher
allowing control over case-sensitivity.
<p>
The wildcard matcher uses the characters '?' and '*' to represent a
single or multiple (zero or more) wildcard characters.
N.B. the sequence "*?" does not work properly at present in match strings.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fileName</code> - the fileName to match on</dd>
<dd><code>wildcardMatcher</code> - the wildcard string to match against</dd>
<dd><code>caseSensitivity</code> - what case sensitivity rule to use, null means case-sensitive</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the fileName matches the wildcard string</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.3</dd>
</dl>
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