c and java indentation

[Lowell Kirsh]

I would like that in C and Java modes, pressing enter will go to the 
next line and indent to the right column. How can I do this?

I have tried putting the following in my .emacs:

(add-hook 'java-mode-hook
          (lambda ()
            (global-set-key [ return ] 'newline-and-indent)))

which does the right thing, BUT, when I am entering text in the 
minibuffer, when I press enter, it goes to the next line, rather than 
executing what's in the minibuffer. Why does it do that?

Lowell