Java program to calculate circumference of circle using final and this keyword

Calculate circumference of Circle


Source Code 

package inherit;

public class CircumCircle {

final double PI = 3.1415;

double radius;

CircumCircle(double r){

this.radius=r;

}

void displayCircum(){

System.out.println("Radius="+this.radius);

System.out.println("Circumference="+ 2*PI*this.radius);

}

}

package inherit;

public class Circle {

public static void main(String[] args){

CircumCircle c1=new CircumCircle(2);

CircumCircle c2=new CircumCircle(2.5);

c1.displayCircum();

c2.displayCircum();

}

}

Output: