Java OCA OCP Practice Question 2978

public class Main {
   static boolean b1 = false;
   static int z = 7;
   static Long y;

   public static void main(String[] args) {
      for (int i = 0; i < 4; i++)
         go(i);/*from  ww  w.j av  a 2  s.c om*/
   }

   static void go(int x) {
      try {
         if ((x == 0) && (!b1 && z == 7))
            System.out.print("0 ");
         if (x < 2 ^ x < 10)
            System.out.print("1 ");
         if ((x == 2) && (y == null | (y.longValue() == 0)))
            System.out.print("2 ");
         if (z <= (x + 4))
            System.out.print("3 ");
      } catch (Exception e) {
         System.out.print("e ");
      }
   }
}