Java program for area of circle

Java Program for area of circle 

import java.util.Scanner;

public class AreaOfCircle

{

   public static void main(String args[ ])

  {

     Scanner s=new Scanner(System.in)

      double r, area; 

     System.out.println("Enter the value of r");

    r=s.nextDouble();

    area=3.14*r*r;

   System.out.println("Area of circle :"+area); 

   }

}

Output 

Enter the value of r

5

Area of circle :78.5