public class Parity { public static boolean even(int n) { switch (n) { case 0: return true; case 1: return false; default: return even(n-2); } } public static boolean odd(int n) { switch (n) { case 0: return false; case 1: return true; default: return even(n-2); } } public static void main(String[] args) { System.out.println(even(64)); } }