Class Circle { final double pi = 3.14159; double r , ar; void area() { System.out.println("Enter the radius:"); r=Float.parseFloat(System.console().readLine()); ar = pi * r* r; System.out.println("area of the circle is:"+ ar); } public static void main(String args[]) { Circle c = new Circle(); c.area(); } }
Output: |
---|
Enter radius : |
2 |
Area of the circle is:12.56 |