Which Java IDE do you prefer?

Question

I've heard quite a lot of different opinions, which IDE is better. Now I'm interested in which circumstances you guys prefer which IDE. With that I mean examples like: on a linux / generally unix machine, on a Windows PC, with low CPU & RAM, with the goal to achieve as much as possible efficiency.

Answer 1

IntelliJ IDEA

Answer 2

Lowest CPU and RAM is clearly achieved by Notepad++. It's a low resource universal simple IDE.

Answer 3

eclipse is much more user friendly and it shows you mistakes in your code the same way that Word shows you misspelled words. It also has a built in compiler.

DrJava is super lightweight and has a compiler but it gets wierd with Swing and You can't use the form
Superclass object = new Subclass();
so I wouldn't reccommend it.

Notepad++ works well and supports many languages but has no java compiler.

Answer 4

And how do you think of IntelliJ, my current IDE (Under condition that the RAM and CPU power is available and the goal is as much efficiency as possible)?