Cleanest way to toggle a Boolean variable in Java?

Question

Is there a better way to negate a boolean in Java than a simple if-else?

if (theBoolean) theBoolean = false; else theBoolean = true;

Answer 1

theBoolean = ! theBoolean;

Answer 2

theBoolean = !theBoolean;

Answer 3

theBoolean ^= true;

Less keystrokes if your variable is longer then four letters :)

Answer 4

The downside of theBoolean ^= true; is that it returns an integer (0 or 1)

Answer 5

theBoolean = theBoolean ? false : true;

EDIT : Why do you have to? Just test the opposite as below :

if (!theBoolean) {
    // do stuff;
}