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Java program to get the size of the EnumSet collection

Given an EnumSet collection, we have to get the size of 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 get the size of the EnumSet collection using the size() method.

Source Code

The source code to get the size of the EnumSet collection is given below. The given program is compiled and executed successfully.

// Java program to get the size of 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("Size of enumSet is: " + enumSet.size());
  }
}

Output

Size of enumSet is: 3

Explanation

Here, we created an EnumSet collection and add elements to it. Then we got the size of enumSet and printed the result.

Java EnumSet Programs »

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