snhnBolt java app5

package circlerevisited;
import java.util.Scanner;

/**
 *
 * @author Naqi Hassan
 */
public class CircleRevisited {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {

        //All variable definitions
        //*********************************
        Scanner in = new Scanner(System.in);
        char input;
        float radius,
              diameter,
              circumference,
              area,
              pi=3.14f;

        //Displaying input prompt and taking input.
        //**********************************************************************
        System.out.print("Enter the radius of the circle: ");
        radius = Math.abs(in.nextFloat());
        System.out.print("Enter A for area; C for circumference; D for Diamter: ");
        input = in.next().charAt(0);

        //IF block
        //**********************************************************************
        if (input=='A' || input=='a'){
            area = pi * radius * radius;
            System.out.println("Area: " + area);
        }

        else if(input=='C' || input=='c'){
            circumference = 2 * pi * radius;
            System.out.println("Cicrumference: " + circumference);
            }

        else if (input == 'D' || input == 'd'){
            diameter = radius*2;
            System.out.println("Diamter: " + diameter);
        }

        else
            System.out.println("Invalid input.  ");

   }
}