Possibilities to short if-conditions in Java

if I want to short this if condition

if (x) {
    x = false;
} else {
    x = true;
}

i use the following code:

x = !x;

But what if I want to short this code? Is there a way to do that? If yes, how?

if (x) {
  method_1();
} else {
  method_2();
}