We are pleased to announce the Maven PMD Plugin 0.4 release! 

http://maven.apache.org/maven-1.x/plugins/pmd/

The Maven PMD plugin is a plugin that wraps the PMD framework 
(http://pmd.sourceforge.net). PMD is a source checking framework that works by 
scanning Java source code and looks for potential problems like: unused local 
variables, empty catch blocks, unused parameters, empty 'if' statements, etc. 

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Changes in this version include:

  Fixed bugs:

o PMD can be enabled/disabled by setting maven.pmd.enable 
o Upgraded to PMD 1.01 and removed the DVSLPath Tool since it is not longer 
  needed 
o Added files for integration with the existing maven-plugin buikd 
o Tom Copeland fixed some stuff in the Jelly script  

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To automatically install the plugin, type the following on a single line:

maven plugin:download
  -Dmaven.repo.remote=http://people.apache.org/repo/m1-snapshot-repository/,http://repo1.maven.org/maven
  -DgroupId=maven
  -DartifactId=maven-pmd-plugin
  -Dversion=0.4

For a manual installation, you can download the plugin here:
http://www.apache.org/dyn/closer.cgi/java-repository/maven/plugins/maven-pmd-plugin-0.4.jar
 

Have fun!
-The Maven PMD Plugin development team