我是Java新手。我需要检查enum元素是否进入enum集中。
在德尔福:
type
TWeekEnum = (weMonday, weTuesday, weWednesday, weThursday, weFriday, weSaturday, weSunday)
TWeekSetEnum = (weSaturday, weSunday)
if (weSunday in (TWeekSetEnum))
...
Java的?
最佳答案
您可以通过这种方式定义enum
,然后在其上将子集创建为静态方法。
public enum TWeekEnum {
weMonday, weTuesday, weWednesday, weThursday, weFriday, weSaturday, weSunday;
public static EnumSet<TWeekEnum> getWeekend() {
return EnumSet.of(weSaturday, weSunday);
}
public static EnumSet<TWeekEnum> getWeekDays() {
return EnumSet.complementOf(getWeekend());
}
}
然后,您可以检查它是否包含您选择的项目,像这样
TWeekEnum.getWeekend().contains(TWeekEnum.weTuesday)