Java program to find the area of circle

public class CalculateCircleAreaExample {
    public static void main(String[] args) {
        int radius =5;
        System.out.println("The radius of the circle      is " + radius);
        double area = Math.PI * radius * radius;
        System.out.println("Area of a circle is " + area);

    }



}

Run the program in command prompt as explained in first example
output: 
The radius of the circle   is  5
           Area of a circle is 78.5