多条件分支跳转指令实战

清疚 2022-09-04 10:52 171阅读 0赞

# 一 case 值连续情况 #

## 1 代码 ##

public void swtich1(int select) {
        int num;
        switch (select) {
            case 1:
                num = 10;
                break;
            case 2:
                num = 20;
                // break;
            case 3:
                num = 30;
                break;
            default:
                num = 40;
        }
    }

## 2 图解 ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

# 二 case 值不连续情况 #

## 1 代码 ##

public void swtich2(int select) {
        int num;
        switch (select) {
            case 100:
                num = 10;
                break;
            case 500:
                num = 20;
                break;
            case 200:
                num = 30;
                break;
            default:
                num = 40;
        }
    }

## 2 图解 ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1][]

# 三 case 值是字符串的情况 #

## 1 代码 ##

// jdk7 新特性：引入 String 类型
    public void swtich3(String season) {
        switch (season) {
            case "SPRING":
                break;
            case "SUMMER":
                break;
            case "AUTUMN":
                break;
            case "WINTER":
                break;
        }
    }

## 2 图解 ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 2][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20220829/cef7cf06b05642528278445f0eb87dd8.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1]: /images/20220829/6eb55b62f6c443daa044cddeab35d981.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 2]: /images/20220829/f12dc621ae104bd99e785d50177656a6.png