This web site on automated testing lists quite a few academic and commercial test case generators. Unfortunately, I don't see any that generate test cases en masse. Most, if not all, seem to generate tests for either one class or one method at a time.

This web site on automated testing lists quite a few academic and commercial test case generators. Unfortunately, I don't see any that generate test cases en masse. Most, if not all, seem to generate tests for either one class or one method at a time.

Update: Agitar's claims its JUnit Generator can generate many unit tests quickly. I don't know if it is current. Most of the information seems old.