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<head>
<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
<title>ClassFileSet Type</title>
</head>
<body>
<h2 id="fileset">ClassFileSet</h2>
<p>A classfileset is a specialized type of fileset which, given a set of "root"
classes, will include all of the class files upon which the root classes depend. This is
typically used to create a jar with all of the required classes for a particular application.
</p>
<p>
classfilesets are typically used by reference. They are declared with an <var>id</var> value and
this is then used as a reference where a normal fileset is expected.
</p>
<p>
This type requires
the <code>BCEL</code> <a href="../install.html#librarydependencies">library</a>.
</p>
<h3>Attributes</h3>
<p>
The class fileset support the following attributes in addition to those supported by
the <a href="fileset.html">standard fileset</a>:
</p>
<table class="attr">
<tr>
<th scope="col">Attribute</th>
<th scope="col">Description</th>
<th scope="col">Required</th>
</tr>
<tr>
<td>rootclass</td>
<td>A single root class name</td>
<td>No</td>
</tr>
</table>
<h3>Nested elements</h3>
<h4>Root</h4>
<p>
When more than one root class is required, multiple nested <code><root></code> elements
may be used
</p>
<table class="attr">
<tr>
<th scope="col">Attribute</th>
<th scope="col">Description</th>
<th scope="col">Required</th>
</tr>
<tr>
<td>classname</td>
<td>The fully qualified name of the root class</td>
<td>Yes</td>
</tr>
</table>
<h4>RootFileSet</h4>
<p>
A root fileset is used to add a set of root classes from a fileset. In this case the entries in the
fileset are expected to be Java class files. The name of the Java class is determined by the
relative location of the classfile in the fileset. So, the
file <code>org/apache/tools/ant/Project.class</code> corresponds to the Java
class <code class="code">org.apache.tools.ant.Project</code>.</p>
<h4>Examples</h4>
<pre>
<classfileset id="reqdClasses" dir="${classes.dir}">
<root classname="org.apache.tools.ant.Project"/>
</classfileset></pre>
<p>
This example creates a fileset containing all the class files upon which
the <code class="code">org.apache.tools.ant.Project</code> class depends. This fileset could then be
used to create a jar.
</p>
<pre>
<jar destfile="minimal.jar">
<fileset refid="reqdClasses"/>
</jar></pre>
<pre>
<classfileset id="reqdClasses" dir="${classes.dir}">
<rootfileset dir="${classes.dir}" includes="org/apache/tools/ant/Project*.class"/>
</classfileset></pre>
<p>
This example constructs the classfileset using all the class with names starting
with <code class="code">Project</code> in the <code class="code">org.apache.tools.ant</code>
package.
</p>
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