Hi,
There are a few .xml's created as above, while building the product, are
used by the Maven PMD plugin<http://maven.apache.org/plugins/maven-pmd-plugin/>
.

basic.xml
cpd.xml
imports.xml
pmd.xml
unusedcode.xml

I was just wondering what are they, and found out this.
Just sharing.

Thank you.
Regards,
Pradeeban.

-- 
Kathiravelu Pradeeban.
Cloud Technologies Team.
WSO2 Inc.

Blog: [Llovizna] http://kkpradeeban.blogspot.com/
M: +94 776 477 976
<?xml version="1.0"?>

<ruleset name="Unused Code Rules"
    xmlns="http://pmd.sf.net/ruleset/1.0.0";
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
    xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 http://pmd.sf.net/ruleset_xml_schema.xsd";
    xsi:noNamespaceSchemaLocation="http://pmd.sf.net/ruleset_xml_schema.xsd";>
  <description>
The Unused Code Ruleset contains a collection of rules that find unused code.
  </description>

  <rule name="UnusedPrivateField"
  		  since="0.1"
        message="Avoid unused private fields such as ''{0}''."
        class="net.sourceforge.pmd.rules.UnusedPrivateFieldRule"
        externalInfoUrl="http://pmd.sourceforge.net/rules/unusedcode.html#UnusedPrivateField";>
    <description>
Detects when a private field is declared and/or assigned a value, but not used.
    </description>
      <priority>3</priority>
    <example>
<![CDATA[
public class Something {
  private static int FOO = 2; // Unused
  private int i = 5; // Unused
  private int j = 6;
  public int addOne() {
    return j++;
  }
}
]]>
    </example>
  </rule>

<rule name="UnusedLocalVariable"
		  since="0.1"
        message="Avoid unused local variables such as ''{0}''."
        class="net.sourceforge.pmd.rules.UnusedLocalVariableRule"
        externalInfoUrl="http://pmd.sourceforge.net/rules/unusedcode.html#UnusedLocalVariable";>
    <description>
Detects when a local variable is declared and/or assigned, but not used.
    </description>
    <priority>3</priority>

    <example>
<![CDATA[
public class Foo {
 public void doSomething() {
  int i = 5; // Unused
 }
}
]]>
    </example>
  </rule>

    <rule name="UnusedPrivateMethod"
    	  since="0.7"
        message="Avoid unused private methods such as ''{0}''."
        class="net.sourceforge.pmd.rules.UnusedPrivateMethodRule"
        externalInfoUrl="http://pmd.sourceforge.net/rules/unusedcode.html#UnusedPrivateMethod";>
    <description>
Unused Private Method detects when a private method is declared but is unused.
    </description>
        <priority>3</priority>
    <example>
<![CDATA[
public class Something {
 private void foo() {} // unused
}
]]>
    </example>
  </rule>


  <rule name="UnusedFormalParameter"
  		  since="0.8"
        message="Avoid unused {0} parameters such as ''{1}''."
        class="net.sourceforge.pmd.rules.UnusedFormalParameterRule"
        externalInfoUrl="http://pmd.sourceforge.net/rules/unusedcode.html#UnusedFormalParameter";>
    <description>
Avoid passing parameters to methods or constructors and then not using those parameters.
    </description>
      <priority>3</priority>

    <example>
<![CDATA[
public class Foo {
 private void bar(String howdy) {
  // howdy is not used
 }
]]>
    </example>
  </rule>

</ruleset>
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