Copy Constructor

 

public class Pupil {

int rollNo;

String name;

int age;

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

rollNo = r;

name = s;

age = a;

}

Pupil(Pupil p) {

rollNo = p.rollNo;

name = p.name;

age = p.age;

}

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[]) {

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

Pupil p2 = new Pupil(p1);

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");

p2.display();

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

}

}