The comments for that method describe how to use that method. It returns an array of Ints. The array will be twice the size of the number of monitors you have. The values will be in x,y pairs. For example, if you have a 1900x1200 monitor as your main monitor and a 1280x720 as your second monitor, you will get (1900,1200,1280,720) as a return value from that method.