Switch

Switch

package com.andy.base.Andy.operator.structure;

public class SwitchDemo01 {
    public static void main(String[] args) {

        //case穿透      //switch 匹配一个具体的值
        char grade = 'C';
        switch (grade ){
            case 'A':
                System.out.println("优秀");
                break;
                case 'B':
                System.out.println("良好");
                break;
            case 'C':
                System.out.println("及格");
                break;
            case 'D':
                System.out.println("再接再厉");
                break;
            case 'E':
                System.out.println("挂科");
                break;
            default:
                System.out.println("未知等级");



        }

    }

}

package com.andy.base.Andy.operator.structure;

public class SwitchDemo02 {
    public static void main(String[] args) {
        //JDk7的新特性，表达式结果可以使字符串！！！
        //字符的本质还是数字

        //反编译 java---class（字节码文件）----反编译（IDEA）
        String name = "钟健";

        switch (name){
            case "钟健":
                System.out.println("钟健");
                break;
            case "Andy":
                System.out.println("Andy");
                break;
            default:
                System.out.println("弄啥咧！");

        }
    }
}