switchcase在枚举中怎样使用

在枚举中使用switch-case语句时，可以根据枚举常量的不同取值来执行不同的逻辑代码。以下是一个示例：

enum Day {    MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY}Day day = Day.MONDAY;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");}

在上面的示例中，我们声明了一个枚举类型Day，并将day赋值为Day.MONDAY。然后使用switch-case语句根据day的取值来输出不同的信息。如果day的取值不在枚举常量中，则会执行default语句块。