Javadocs are generated from source files, not class files, so having the jar file is not sufficient. What's more, javadocs are generated from source code comments -which are not preserved in the class file- there's not even a theoretical way to generate them from class files.
are you sure? But we use ant scrit to generate java docs from jars. We dont give Source file as input anywhere there.
So i am sure, javadoc gets preserved in the class files.
Just wan to know if there is any exising API solving the purpose.
Sorry, but class files do not preserve comments. However, it is common practice (at least on open source projects, anyway) to jar up source code and/or javadocs. It sounds like that's what your ant build.xml file is doing.