文章标题

来源：互联网发布：福州网络家长学校千聊编辑：程序博客网时间：2024/06/07 04:51

switch 关键字可以对byte short int char 类型进行选择

class SwitchDemo {    public static void main(String[] args)     {        //byte short int char        int x = 3;        switch(x)         {            default:                System.out.println("d");                //break;            case 4:                System.out.println("a");                //break;            case 6:                System.out.println("b");                break;            case 2:                System.out.println("c");                break;        }        // 对char类型变量选择        int a=4,b =2;        char ch = '+';        switch(ch)        {            case '-':                System.out.println(a-b);            break;            case '+':                System.out.println(a+b);            break;            case '*':                System.out.println(a*b);            break;            case '/':                System.out.println(a/b);            break;            default:                System.out.println("feifa");        }        System.out.println("Hello World!");        // 多个switch 语句执行一个逻辑        int x = 4;        switch(x)        {            case 3:            case 4:            case 5:                System.out.println(x+"春季");                break;            case 6:            case 7:            case 8:                System.out.println(x+"夏季");                break;            case 9:            case 10:            case 11:                System.out.println(x+"秋季");                break;            case 12:            case 1:            case 2:                System.out.println(x+"冬季");                break;            default:                System.out.println("nono");        }    }}

0 0