enumset class in java

// Java program to illustrate working 
// of EnumSet and its functions. 
import java.util.EnumSet; 
  
enum Gfg { CODE, LEARN, CONTRIBUTE, QUIZ, MCQ }; 
  
public class EnumSetExample { 
    
    // Main Method 
    public static void main(String[] args) 
    { 
        // Creating a set 
        EnumSet<Gfg> set1, set2, set3, set4;  
  
        // Adding elements 
        set1 = EnumSet.of(Gfg.QUIZ, Gfg.CONTRIBUTE, 
                          Gfg.LEARN, Gfg.CODE); 
        set2 = EnumSet.complementOf(set1); 
        set3 = EnumSet.allOf(Gfg.class); 
        set4 = EnumSet.range(Gfg.CODE, Gfg.CONTRIBUTE); 
        System.out.println("Set 1: " + set1); 
        System.out.println("Set 2: " + set2); 
        System.out.println("Set 3: " + set3); 
        System.out.println("Set 4: " + set4); 
    } 
}