int[] array=new int[5];
Arrays.fill(array,9);
System.out.println(Arrays.toString(array));
array= ArrayUtils.add(array,599);
System.out.println(Arrays.toString(array));
array=ArrayUtils.add(array,0,1000);
System.out.println(Arrays.toString(array));
array=ArrayUtils.addAll(array,array);
System.out.println(Arrays.toString(array));
array=ArrayUtils.remove(array,0);
System.out.println(Arrays.toString(array));
array=ArrayUtils.removeElement(array,9);
System.out.println(Arrays.toString(array));
[9, 9, 9, 9, 9]
[9, 9, 9, 9, 9, 599]
[1000, 9, 9, 9, 9, 9, 599]
[1000, 9, 9, 9, 9, 9, 599, 1000, 9, 9, 9, 9, 9, 599]
[9, 9, 9, 9, 9, 599, 1000, 9, 9, 9, 9, 9, 599]
[9, 9, 9, 9, 599, 1000, 9, 9, 9, 9, 9, 599]