java program to get the circle radius

1import java.util.Scanner;
2public class AreaOfCircle {
3   public static void main(String args[]){
4      int radius;
5      double area;
6      Scanner sc = new Scanner(System.in);
7      System.out.println("Enter the radius of the circle ::");
8      radius = sc.nextInt();
9      area = (radius*radius)*Math.PI;
10      System.out.println("Area of the circle is ::"+area);
11   }
12}