Java - If statement if both and each

So I have two variables:

int x = 3;
int y = 7;

Then I have this code:

int key = 4; // Can be anything

if (key == x || key == y) {
    if (key == x) {
        // Do something with x
    } else {
        // Do something with y
    }

    // Do something with both x and y
}

I get really annoyed to have to write key == x 2 times, because in my original code that can be something really long like: key == StaticRandomVeryLongNamedClassName.getARandomNumber().

Is there any way to do this without having to write key == x two times?

Thanks.