Java Practice

Java program to remove a specified element from EnumSet collection

Given an EnumSet collection, we have to remove a specified element from it.
Submitted by Nidhi, on May 29, 2022

Problem statement

In this program, we will create an Enum for COLORS constants. Then we will create an EnumSet collection and add elements to it. After that, we will remove a specified element using the remove() method.

Source Code

The source code to remove a specified element from the EnumSet collection is given below. The given program is compiled and executed successfully.

// Java program to remove a specified element 
// from the EnumSet collection

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 > enumSet = EnumSet.noneOf(COLORS.class);

    enumSet.add(COLORS.RED);
    enumSet.add(COLORS.GREEN);
    enumSet.add(COLORS.BLUE);

    System.out.println("Elements of enumSet before removing element: " + enumSet);

    enumSet.remove(COLORS.GREEN);

    System.out.println("Elements of enumSet after removing element: " + enumSet);
  }
}

Output

Elements of enumSet before removing element: [RED, GREEN, BLUE]
Elements of enumSet after removing element: [RED, BLUE]

Explanation

The Main class contains a main() method. The main() method is the entry point for the program. And, created an EnumSet collection and add elements to it. Then we removed a specified item from created EnumSet collection and printed the updated EnumSet Collection.

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