What's the trick to write code faster in Eclipse?

I know there is a trick that when you type quickly code in Eclipse, you can hit some secret keys and it will auto-complete the missing parts. Who knows them?

example: I have someVeryLongVariablesWhichIWantToTypeFast and I start typing someVeryLongVa but nothing happens. Only when I type method names a yellow box appears that wants to help me.