An easy way to enter the Mustang Regression contest
Let me give y'all an interesting hint on entering the regression contest ... Suppose your application has a unit-test suite ... Simply run your test suite on a Tiger build (1.5 update 6 is the latest) and then on a Mustang build (JDK 6 build 70 is the latest) and compare the results.
If every test gives the same result on each then that's wonderful. But if some test gives a different result on Mustang than on Tiger, it's time to roll up your sleeves. Does it show a bug in your application? Or does it show a bug in Java?
If you're satisfied it shows a bug in Java, you've probably found a regression. Again, regressions occur when functionality which used to work in a previous release is broken in a later release. WE WANT TO KNOW ABOUT REGRESSIONS, because we want to fix them before making the final Mustang release.
There's more information about the contest here including a link to tne entry page.