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Java program to compare two EnumSet collections

Given two EnumSet collections, we have to compare them.
Submitted by Nidhi, on May 28, 2022

Problem statement

In this program, we will create an Enum for COLORS constants. Then we will create 3 EnumSet collections and compare EnumSet collections using the equals() method.

Java program to compare two EnumSet collections

The source code to compare two EnumSet collections is given below. The given program is compiled and executed successfully.

// Java program to compare two 
// EnumSet collections

import java.util.*;

//Enum for color constants
enum COLORS {
  RED,
  GREEN,
  BLUE,
  BLACK,
  WHITE
};

public class Main {
  public static void main(String[] args) {
    EnumSet < COLORS > enumSet1;
    EnumSet < COLORS > enumSet2 = EnumSet.noneOf(COLORS.class);
    EnumSet < COLORS > enumSet3;

    enumSet1 = EnumSet.range(COLORS.GREEN, COLORS.BLACK);
    enumSet3 = EnumSet.range(COLORS.GREEN, COLORS.BLACK);

    if (enumSet1.equals(enumSet2))
      System.out.println("The enumSet1, enumSet2 has similar elements.");
    else
      System.out.println("The enumSet1, enumSet2 has different elements.");

    if (enumSet1.equals(enumSet3))
      System.out.println("The enumSet1, enumSet3 has similar elements.");
    else
      System.out.println("The enumSet1, enumSet3 has different elements.");
  }
}

Output

The enumSet1, enumSet2 has different elements.
The enumSet1, enumSet3 has similar elements.

Explanation

The Main class contains a main() method. The main() method is the entry point for the program. And, created 3 EnumSet collections enumSet1, enumSet2, enumSet3. Then we compared EnumSet collections using equals() method and printed appropriate message.

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