eclipse -clean

Hi! I've got an irresistable urge to share this.

eclipse -clean

cleans eclipse caches and can make a very stubborn build error go away.

I've had a "resource already exists on disk" in a m2eclipse driven project. Deleting the file manaully/refresh/clean/close-open-project did not help. workspace/.metadata/.log contained a lot of ClassCastException-s.

But closing Eclipse and re-running it as "eclipse -clean" did help.