Java switch

int key = 71;
  switch (key) {
  case 1:
   System.out.println("等級1");
   break;
  case 2:
   System.out.println("等級2");
   break;
  case 3:
   System.out.println("等級3");
   break;
  case 4:
   System.out.println("等級4");
   break;
  case 5:
   System.out.println("等級5");
   break;
  default:
   System.out.println("等級不在範圍內");
   break;
  }