arrays - Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 2 at test.GameOfLife.main(gameOfLife.java:10) -

here code

class gameoflife { public static void main(string[] args) {     int height = 0;     int width = 0;     int [][][] universe = new int [2][20][20];      (height=0; height <= 5; height ++){         (width=0; width <= 5; width++){             universe [2][height][width]= 0;         }     }     system.out.print(universe[2][2][3]); } } 

exception in thread "main" java.lang.arrayindexoutofboundsexception: 2 @ test.gameoflife.main(gameoflife.java:10)

when define universe

int [][][] universe = new int [2][20][20]; 

it has 2 spots, index 0 , index 1. should do

int depth; (depth=0; depth < universe.length; depth ++) {   (height=0; height < universe[depth].length; height ++){     (width=0; width < universe[depth][height].length; width++){         universe [depth][height][width]= 0;     }   } }