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<dt>All Implemented Interfaces:</dt>
<dd>java.lang.Cloneable</dd>
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<pre>public class <span class="typeNameLabel">Exit</span>
extends <a href="../../../../../org/apache/tools/ant/Task.html" title="class in org.apache.tools.ant">Task</a></pre>
<div class="block">Exits the active build, giving an additional message
 if available.

 The <code>if</code> and <code>unless</code> attributes make the
 failure condi