Can i generate java API from class files

I have only class files. Is it possible to generate the java API using the javadoc.If yes, pls tell me how can i do??

Also, Javadoc 1.4.2 will contain an unsupported option -Xclasses
that should allow you to do this. You must pass in class names
and use -classpath to find them. For com.package.MyClass
at /home/classes/com/package/MyClass.class,
you would run:
javadoc -Xclasses -classpath /home/classes com.package.MyClass
For mroe info, see:
http://developer.java.sun.com/developer/bugParade/bugs/4720100.html-
Doug Kramer
Javadoc team

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