Copying The Values of One Object to Another Using Constructor in Java

In this blog you will learn how to copy the values from one object to another object using constructor in java.

Introduction

 

We can copy the values of one object to another using many ways like :

1. Using clone() method of an object class.
2. Using constructor.
3. By assigning the values of one object to another.

in this example, we copy the values of object to another with help a constructor.

 

Example :

package employee;
class Employee {
 int refno;
 String refname;
 Employee(int i, String n) {
  refno = i;
  refname = n;
 }
 Employee(Employee e) {
  refno = e.refno;
  refname = e.refname;
 }
 void display() {
  System.out.println(refno + " " + refname);
 }
 public static void main(String[] args) {
  Employee e1 = new Employee(123, "raman");
  Employee e2 = new Employee(e1);
  e1.display();
  e2.display();
 }
}

Output