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You need to format the commenting for the javadoc tool using particular annotations. See How to write doc comments.

Is that the correct path to your JDK? Something got cut off in my previous post explaining that path was a guess and in most cases an incorrect one at best: navigate (or search) to your JDK folder to...

Its a little hard from those pictures to confirm this is the problem, but in Eclipse for the javadoc command you should point it to the actual javadoc.exe program, which should be with your JDK...