package devmanuals.com;

import java.util.EnumSet;

public final class EnumSetDemo {

	private enum Workingday {
		Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday;

		public static final EnumSet<Workingday> Workdays = EnumSet.range(
				Monday, Friday);

		public final boolean isWorkday() {
			return Workdays.contains(this);
		}

		public static final EnumSet<Workingday> WHOLE_WEEK = EnumSet
				.allOf(Workingday.class);
	}

	public static final void main(final String args[]) {
		System.out.println("Workday Schedule:");

		for (final Workingday workingday : Workingday.WHOLE_WEEK)
			System.out.println(String.format("%d. On %s you "
					+ (workingday.isWorkday() ? "have to work" : "can relax")
					+ ".", workingday.ordinal() + 1, workingday));
		System.out.println("Do I have to work the whole week?");
		System.out.println(Workingday.Workdays
				.containsAll(Workingday.WHOLE_WEEK) ? "Yes, unfortunately."
				: "Certainly not.");
		final EnumSet<Workingday> weekend = Workingday.WHOLE_WEEK.clone();
		weekend.removeAll(Workingday.Workdays);
		System.out.println(String.format("The weekend is %d days long.",
				weekend.size()));
	}
}