How to count total number of class objects created in Java

By Atul Rai | Last Updated: May 18, 2023 Previous       Next

This example will help you to understand how to count the total number of class objects created in Java.

1. Create a global static variable of type int in the class.

2. Define the constructor of the class.

3. Increase the value of the variable in the constructor.

package org.websparrow;

public class Department {

	private static int noOfObjects;

	public Department() {
		noOfObjects++;
	}

	public static void main(String[] args) {

		Department d1 = new Department();
		Department d2 = new Department();
		Department d3 = new Department();

		System.out.println("Total objects created: " + noOfObjects);

	}
}

Output:

Total objects created: 3