java - 添加枚举值？

Question

我可以从两个枚举创建一个枚举(在 switch 语句中使用的常量)吗？？？
类似...

public class Test{

    public enum WorkDay {Monday, Tuesday, Wednesday, Thursday,Friday};
    public enum WeekEndDay {Sunday, Saturday};

    // it doesn't work ):
    public enum Day{WorkDay.values(),WeekEndDay.values()}; 

    public static void Action(Day d) {

        switch(d){
            case Monday:
                ...;
                break;
            case Tuesday:
                ...;
                break;
            case ...:
                ...;
                break;
            case Saturday:
                ...;
                break;
        }
    }
}

有什么想法吗？？？我真的很想使用 switch 并分隔枚举谢谢!!!

Answer 1

没有。您可以创建一个 Day enum 和显式列出每个值，并为每种类型提供一个构造函数......但我个人会使用:

public enum Day {
    MONDAY(true),
    TUESDAY(true),
    WEDNESDAY(true),
    THURSDAY(true),
    FRIDAY(true),
    SATURDAY(false),
    SUNDAY(false);

    private final boolean workDay;

    private Day(boolean workDay) {
        this.workDay = workDay;
    }

    public boolean isWorkDay() {
        return workDay;
    }
}

然后您还可以发布 EnumSet<Day>工作日和非工作日。