[I] wanted to know if JavaDoc will be generated for an inherited method (which is overridden) if I just document the superclass?
Yes. If you don’t have javadoc comments on a subclass, javadocs will be be generated based on the superclasses javadoc.
If you define javadocs in the subclass they will replace the inherited javadocs, but you can use {@inheritDoc} to include the respective superclass javadoc comments in the subclass javadocs.
Reference:
- https://docs.oracle.com/javase/6/docs/technotes/tools/solaris/javadoc.html#inheritingcomments