List all subclasses with fully qualified names

Question

I would like to get a list of all subclasses of a given class with their fully qualified names. I wanted to copy it from Eclipse and paste into a text file like this:

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Answer 1

Following the pattern described in http://internna.blogspot.com/2007/11/java-5-retrieving-all-classes-from.html one can do it programmatically. It's a shame Eclipse can't do it OOTB. Doing it in Java code allows to do the filtering with no additional cost (e.g. !(klazz.isEnum())).