Circle

import java.util.Scanner; // import Scan method
public class Circle // Class or file name
{
 public static void main(String [] args)
 {
   System.out.print("Please, insert your radius");
   Scanner rad = new Scanner (System.in);
   double r = rad.nextDouble(); // create a Double (Integer with floating values) to scan your value
   System.out.println("Area of this circle is "+Math.PI*r*r);
   System.out.println("Circumference of this circle is "+2*Math.PI*r);
 }
}