We are pleased to announce the Maven Jar Plugin 1.8-SNAPSHOT release! 

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

Plugin for creating JAR files. 

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Changes in this version include:

  Changes:

o Remove unused properties from documentation. Fixes MPJAR-47. 
o Document need for jar.manifest.classpath property. Fixes MPJAR-35. Thanks 
  to Dennis Lundberg. 
o Update dependencies to match ones in maven 1.1 core and to unify them 
  between plugins. The following dependencies are updated : velocity v 
  1.4-dev -> v1.4 Fixes MAVEN-1712. 
o It requires at least maven-plugin-plugin v1.7.  

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

maven plugin:download
  -Dmaven.repo.remote=http://www.ibiblio.org/maven,http://cvs.apache.org/repository/
  -DgroupId=maven
  -DartifactId=maven-jar-plugin
  -Dversion=1.8-SNAPSHOT

For a manual installation, you can download the plugin here:
http://www.apache.org/dyn/closer.cgi/java-repository/maven/plugins/maven-jar-plugin-1.8-SNAPSHOT.jar
 

Have fun!
-The Maven Jar Plugin development team