5.从键盘上输入一位整数，当输入1-7时，显示下面对应的英文姓起名称的缩写。 1：MON 2:TUE 3:WED 4:THU 5:FRI 6:SAT 7:SUN

public static void main(String[] args) {

			  Scanner input = new Scanner(System.in);
			  boolean kaiGuan=true;
			   while (kaiGuan) {
			   System.out.println("请你输入一位整数:");
			   int num = input.nextInt();
			   switch (num) {
			   case 1:
			    System.out.println(num + ":MON");
			    break;
			   case 2:
			    System.out.println(num + ":TUE");
			    break;
			   case 3:
			    System.out.println(num + ":WED");
			    break;
			   case 4:
			    System.out.println(num + ":THU");
			    break;
			   case 5:
			    System.out.println(num + ":FRI");
			    break;
			   case 6:
			    System.out.println(num + ":SAT");
			    break;
			   case 7:
			    System.out.println(num + ":SUN");
			    break;
			   case 0:
			    kaiGuan=false;
			    System.out.println("程序结束");
			    break;
			   default:
			    System.out.println("请重新输入一个数字");
			    break;
			    
			   }
	
	
	
	}	
		}