EnumSet<Weeks> week = EnumSet.noneOf(Weeks.class);
week.add(Weeks.MONDAY);
System.out.println("所有元素" + week);
week.remove(Weeks.MONDAY);
System.out.println("所有元素" + week);
week.addAll(EnumSet.complementOf(week));
System.out.println("所有元素" + week);
week.removeAll(EnumSet.range(Weeks.MONDAY, Weeks.TUESDAY));
System.out.println("所有元素" + week);
week.add(Weeks.MONDAY);
System.out.println("所有元素" + week);
week.remove(Weeks.MONDAY);
System.out.println("所有元素" + week);
week.addAll(EnumSet.complementOf(week));
System.out.println("所有元素" + week);
week.removeAll(EnumSet.range(Weeks.MONDAY, Weeks.TUESDAY));
System.out.println("所有元素" + week);
2.请问你贴图用的 是什么编辑器?
3.为什么我抄的代码会是这样的,是以前的java版本支持的格式吗?