[SOLVED by RobinB]How to check if an object is not itself?

[HeroesGraveDev]

Someone has already posted:

@RobinB

Look at this:
(This does not go inside the zombie class ofcourse)

for(int zom = 0; zom < getWorld().getZombies().size(); zom++) {
    for(int zom2 = zom+1; zom2 < getWorld().getZombies().size(); zom2++) {
        Zombie zombie1 = getWorld().getZombies().get(zom);
        Zombie zombie2 = getWorld().getZombies().get(zom2);
        //Collision stuff
    }
}