Using Eclipse, if your cursor is positioned in between the parentheses of a method call, the [Control][Spacebar] keystroke will show you the signature of the method, i.e., the parameters that the method accepts. I just read where the documentation shows that you should use the [Control][Shift][Spacebar] keystroke to see method parameters, but I've found that [Control][Spacebar] works fine for me.
(After a little experimenting...) You actually do get slightly different results using the [Control][Spacebar] and [Control][Shift][Spacebar] keystrokes ... I don't know exactly what the differences are, but when you're hunting for information about a method signature or method parameters it may be worth trying both.
There’s just one person behind this website; if this article was helpful (or interesting), I’d appreciate it if you’d share it. Thanks, Al.