rules.xml

<?xml version="1.0"?>
<ruleset>
  <rule  name="NotYetWrittenCode"
    message="Replace default method implementation with valid implementation."
    class="net.sourceforge.pmd.rules.XPathRule">
    <description>
    Eclipse and NetBeans place generic implementations in classes for methods that are required by parent abstract classes and parent interfaces.
  
    </description>
    <properties>
      <property name="xpath">
      <value>
<![CDATA[
//AllocationExpression[ClassOrInterfaceType[@Image="UnsupportedOperationException"]
and
./Arguments/ArgumentList/Expression/PrimaryExpression/PrimaryPrefix/Literal[
contains(@Image,"Not supported yet") or
contains(@Image,"Not implemented yet")]]
]]>
      </value>
      </property>
    </properties>
    <priority>3</priority>
    <example>
<![CDATA[
public class Foo {

    public void notSupportedYet() {
        throw new UnsupportedOperationException("Not supported yet."); //Fix this!
    }

    public void notImplementedYet() {
        throw new UnsupportedOperationException("Not implemented yet");  //Fix this!
    }

    public void validUsage() {
        throw new UnsupportedOperationException("This won't work ever."); //Valid usage.
    }
}
]]>
    </example>
  </rule>
</ruleset>