Here is an expression to the same question from another user:
optimus.prime:
Javadocs is bundled with zip packages, but it is not available for the latest 2.2.M1. You can use distribution 2.1 to get javadocs.
With the upcoming versions 2.2.RC1, java and tag will be available through package distributions.
Take a look at http://forum.primefaces.org/viewtopic.php?f=3&t=4575
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