First Java App

gistfile1.txt

import java.util.Scanner;

public class MyFirstClass {

	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		double PI=3.14;
	  double radius, area, circumference;
	  System.out.print("Enter the radius: ");
	  radius = sc.nextDouble();
	  //Calculate the area
	  area = PI * radius * radius;
	  //Calculate the circumference
	  circumference = 2 * PI * radius;
	  //Print the area and the circumference of the circle
	  System.out.println("The area is "+area);
	  System.out.println("The Circumference is "+ circumference);	  
	}

}