将if-else转换为switch语句java

switch (表达式) {
    case 值1:
        // 代码块1
        break;
    case 值2:
        // 代码块2
        break;
    ...
    default:
        // 默认代码块
        break;
}

// 原始的if-else语句
if (value == 1) {
    System.out.println("Value is 1");
} else if (value == 2) {
    System.out.println("Value is 2");
} else if (value == 3) {
    System.out.println("Value is 3");
} else {
    System.out.println("Value is not 1, 2 or 3");
}

// 转换为switch语句
switch (value) {
    case 1:
        System.out.println("Value is 1");
        break;
    case 2:
        System.out.println("Value is 2");
        break;
    case 3:
        System.out.println("Value is 3");
        break;
    default:
        System.out.println("Value is not 1, 2 or 3");
        break;
}