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   <title>JDepend Task</title>
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<h2 id="jdepend">JDepend</h2>

<h3>Description</h3>

<p>Invokes the <a href="http://www.clarkware.com/software/JDepend.html" target="_top">JDepend</a>
parser.</p>

<p>This parser &quot;traverses a set of Java source file directories and generates design quality
metrics for each Java package&quot;.  It allows to &quot;automatically measure the quality of a
design in terms of its extensibility, reusability, and maintainability to effectively manage and
control package dependencies.&quot;</p>

<p>Source file directories are defined by nested <code>&lt;sourcespath&gt;</code>. Class file
directories are defined by nested <code>&lt;classespath&gt;</code>. See <a href="#nested">nested
elements</a>.</p>

<p>Optionally, you can also set the <var>outputfile</var> name where the output is stored. By
default the task writes its report to the standard output.</p>

<p>The task requires at least the JDepend 1.2 version.</p>

<h3>Parameters</h3>

<table class="attr">
  <tr>
    <th scope="col">Attribute</th>
    <th scope="col">Description</th>
    <th scope="col">Required</th>
  </tr>
  <tr>
    <td>outputfile</td>
    <td>The output file name. If not set, the output is printed on the standard output.</td>
    <td>No</td>
  </tr>
  <tr>
    <td>format</td>
    <td>The format to write the output in,
    either <q>text</q> (default) or <q>xml</q></td>
    <td>No; the default is <q>text</q></td>
  </tr>
  <tr>
    <td>fork</td>
    <td>Run the tests in a separate JVM.</td>
    <td>No; default is <q>off</q></td>
  </tr>
  <tr>
    <td>haltonerror</td>
      <td>Stop the build process if an error occurs during the <code>jdepend</code> analysis.</td>
    <td>No; default is <q>off</q></td>
  </tr>
  <tr>
    <td>timeout</td>
    <td>Cancel the operation if it doesn't finish in the given time (measured in milliseconds).</td>
    <td>No, ignored if <var>fork</var> is <q>false</q></td>
  </tr>
  <tr>
    <td>jvm</td>
    <td>The command used to invoke JVM. The command is resolved
      by <code>java.lang.Runtime.exec()</code>.</td>
    <td>No; default <kbd>java</kbd>, ignored if <var>fork</var> is <q>false</q></td>
  </tr>
  <tr>
    <td>dir</td>
    <td>The directory to invoke JVM in.</td>
    <td>No, ignored if <var>fork</var> is <q>false</q></td>
  </tr>
  <tr>
    <td>includeruntime</td>
    <td>Implicitly add the classes required to run <code>jdepend</code> in forked mode. <em>Since
      Apache Ant 1.6</em>.</td>
    <td>No; default is <q>no</q>, ignored if <var>fork</var> is <q>false</q></td>
  </tr>
  <tr>
    <td>classpathref</td>
    <td>the <var>classpath</var> to use, given as reference to a path defined elsewhere.</td>
    <td>No</td>
  </tr>
</table>

<h3 id="nested">Parameters specified as nested elements</h3>

<p><code>jdepend</code> supports four nested
elements: <code>&lt;classpath&gt;</code>, <code>&lt;classespath&gt;</code>
and <code>&lt;sourcespath&gt;</code>, that represent <a href="../using.html#path">path-like
structures</a>, and <code>&lt;exclude&gt;</code>.</p>

<p><code>&lt;sourcespath&gt;</code> is used to define the paths of the source code to analyze, but
it is deprecated. With version 2.5 of JDepend, only class files are analyzed. The nested
element <code>&lt;classespath&gt;</code> replaces <code>&lt;sourcespath&gt;</code> and is used to
define the paths of compiled class code to analyze; the <code>&lt;sourcespath&gt;</code> variable is
still available in case you are using an earlier version of JDepend.
The <code>&lt;exclude&gt;</code> element can be used to set packages to ignore (requires JDepend 2.5
or above).</p>

<h3>Examples</h3>

<p>Invoke JDepend on the <samp>build</samp> directory, writing the output on the standard
output. The classpath is defined using a reference.</p>
<pre>
&lt;jdepend classpathref="base.path"&gt;
    &lt;classespath&gt;
        &lt;pathelement location="build"/&gt;
    &lt;/classespath&gt;
&lt;/jdepend&gt;</pre>

<p>This invoke JDepend in a separate JVM on the <samp>src</samp> and <samp>testsrc</samp>
directories, writing the output to the <samp>docs/jdepend.xml</samp> file in XML format. The
classpath is defined using nested elements.</p>
<pre>
&lt;jdepend outputfile="docs/jdepend.xml" fork="yes" format="xml"&gt;
    &lt;sourcespath&gt;
        &lt;pathelement location="src"/&gt;
    &lt;/sourcespath&gt;
    &lt;classpath&gt;
        &lt;pathelement location="classes"/&gt;
        &lt;pathelement location="lib/jdepend.jar"/&gt;
    &lt;/classpath&gt;
&lt;/jdepend&gt;</pre>

<p>Invoke JDepend with the build directory as the base for class files to analyze, and ignore all
classes in the <samp>java.*</samp> and <samp>javax.*</samp> packages.</p>
<pre>
&lt;jdepend classpathref="base.path"&gt;
    &lt;exclude name="java.*&gt;
    &lt;exclude name="javax.*&gt;
    &lt;classespath&gt;
        &lt;pathelement location="build"/&gt;
    &lt;/classespath&gt;
&lt;/jdepend&gt;</pre>

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