void () { for (int j = new java.util.Random().nextInt(values.length); j < new java.util.Random().nextInt(values.length); j++) { int[] array = values[j]; //IDEA says here: contents of array 'array' are written to, but never used for (int i = 0; i < MAX; i++) { array[i] = new java.util.Random().nextInt(); } } }