Copying data of a object to another object without using Copy constructor

 public class Pupil1 {

int rollNo;

String name;

int age;

Pupil1(int r, String s, int a) {

rollNo = r;

name = s;

age = a;

}

Pupil1(){}

void display() {

System.out.println("Roll no of student is :" + rollNo);

System.out.println("Name of student is :" + name);

System.out.println("Age of student is :" + age);

}

public static void main(String args[]) {

Pupil1 p1 = new Pupil1(123, "Sudeep", 25);

Pupil1 p2 = new Pupil1();

p2.rollNo = p1.rollNo;

p2.name = p1.name;

p2.age = p1.age;

System.out.println("---------------------------------------------------");

System.out.println("Details of First Student");

p1.display();

System.out.println("---------------------------------------------------");

System.out.println("Details of Second Student copied from first Student");

System.out.println()

p2.display();

System.out.println("---------------------------------------------------");

}

}