shift

Assuming your array is {10,20,30,40,50,60,70,80,90,100} What your loop does is: Iteration 1: array[1] = array[0]; {10,10,30,40,50,60,70,80,90,100} Iteration 2: array[2] = array[1]; {10,10,10,40,50,60,70,80,90,100} What you should be doing is Object temp = pool[position]; for (int i = (position – 1); i >= 0; i–) { array[i+1] = array[i]; } array[0] = temp;