如何使用Java Switch进行多条件判断

在Java中，switch语句主要用于处理基于单个变量的多个条件判断。然而，从Java 7开始，你可以使用switch语句处理基于字符串的多个条件判断，甚至可以处理枚举类型。这里有一些示例说明如何使用Java switch进行多条件判断。

1. 基于整数值的多条件判断：

int number = 27;

switch (number) {
    case 1:
        System.out.println("Number is 1");
        break;
    case 2:
        System.out.println("Number is 2");
        break;
    case 3:
        System.out.println("Number is 3");
        break;
    default:
        System.out.println("Number is not 1, 2, or 3");
}

2. 基于字符串值的多条件判断（Java 7及更高版本）：

String day = "Wednesday";

switch (day) {
    case "Monday":
        System.out.println("Today is Monday");
        break;
    case "Tuesday":
        System.out.println("Today is Tuesday");
        break;
    case "Wednesday":
        System.out.println("Today is Wednesday");
        break;
    case "Thursday":
        System.out.println("Today is Thursday");
        break;
    case "Friday":
        System.out.println("Today is Friday");
        break;
    case "Saturday":
        System.out.println("Today is Saturday");
        break;
    case "Sunday":
        System.out.println("Today is Sunday");
        break;
    default:
        System.out.println("Invalid day");
}

3. 基于枚举类型的多条件判断：

enum Color {
    RED, GREEN, BLUE, YELLOW, ORANGE
}

Color color = Color.RED;

switch (color) {
    case RED:
        System.out.println("Color is red");
        break;
    case GREEN:
        System.out.println("Color is green");
        break;
    case BLUE:
        System.out.println("Color is blue");
        break;
    case YELLOW:
        System.out.println("Color is yellow");
        break;
    case ORANGE:
        System.out.println("Color is orange");
        break;
    default:
        System.out.println("Invalid color");
}

请注意，switch语句主要用于处理基于单个变量的多个条件判断。对于更复杂的多条件判断，你可能需要使用if-else语句或其他逻辑结构。