EnumSetDemo - Java Example Program

import java.util.*;

class EnumSetDemo
{
    enum Weekdays
    {
        Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday;
    }
    
    public static void main(String[] args)
    {
        EnumSet set = null; // LINE A
        System.out.println(set);
    
        set = EnumSet.of(Weekdays.Monday); // LINE B
        System.out.println("set when added monday : " + set);
    
        set = EnumSet.of(Weekdays.Tuesday); // LINE C
        System.out.println("set when added tuesday : " + set);
    
        EnumSet weekends = EnumSet.of(Weekdays.Saturday, Weekdays.Sunday); // LINE D
        System.out.println("weekends : " + weekends);
    
        EnumSet otherweekdays = EnumSet.complementOf(weekends); // LINE E
        System.out.println("Otherdays : " + otherweekdays);
    
        set = EnumSet.allOf(Weekdays.class); // LINE F
        EnumSet setCopy = EnumSet.copyOf(set); // LINE G
        System.out.println("setCopy elements : " + setCopy);
    }
}