What I meant was ...
that it suggests gives you a tooltip of the parameters. I for one never remember the order of parameters in System.arraycopy and many other Java API's, the IDE in a tooltip lets me know the order of parameters.
I didn't mean jump to declarations, but jump to a method in another class that you are using because you want to see something, or find all the usages of this method, or all the implementers of this Interface, etc.
I also find that the syntax checker is very useful, it marks in red all teh lines taht won't compile so that I don't need to run my Ant build and find all my silly little typos.
