Page History

...

That automatically rewrites all occurrences of optional.isEmpty()  to !optional.isPresent()  and that is going to compile on JDK8. Few more (~30) rules like this and the javac  is almost ready to run on JDK8! Run few tests to verify the behavior remains the same after the automatic transformation and that's all. People can use Apache NetBeans IDE with javac  from the latest JDK or they can use the automatic port of the same code running on JDK8. Ideally the behavior shall be identical. No more questions: Are you using nb-javac or not? No more duplicated testing matrix.

The PR-12 implements here-in proposed conversion.

What does nb-javac do that's different to vanilla javac?

...