I am using Java with OpenGL to make a small 3D game.

I basically want a method, which takes two "ObjectBox" objects (A "ObjectBox" has .getX() .getY() .getZ() .getSizeX() .getSizeY() .getSizeZ() methods) as a parameter and return true if the two Boxes are colliding and false if they aren't.

So it should be something like this:

public static boolean checkCollision(ObjectBox box1, ObjectBox box2){
return //TRUE IF COLLIDING - FALSE IF NOT COLLIDING
}

I tried figuring it out but it seemed pretty hard to me.

Also, any physics library recommendations are appreciated. (Except jBullet).