15-switch多选择结构

package com.wang.struct;

public class Demo04 {
    public static void main(String[] args) {
        char grade='D';

        switch(grade){
            case 'A':
                System.out.println("优秀");
                break;
            case 'B':
                System.out.println("合格");
                break;
            case 'C':
                System.out.println("一般");
                break;
            case 'D':
                System.out.println("较差");
                break;
            default:
                System.out.println("输入错误");
        }
    }
}