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The plugin is available from:
http://maven.apache.org/maven-1.x/plugins/jdeveloper/
Download the latest plugin in the default directory for your Maven plugins.
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The only tricky part that is not explained that well is setting of the two mandatory properties in build.properties. build.properties files is in your home directory and should contain plugin settins as descibed in:
http://maven.apache.org/maven-1.x/plugins/jdeveloper/properties.html.
Mine settings are:
maven.jdeveloper.relative.path=../../../../../../..
maven.jdeveloper.maven.home=/home/igor/.maven
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