1    package shapes;
2    public class ShapesThing {
3        public static void main(String[] args) {
4            SSquare square = new SSquare(400);
5            System.out.println("square = " + square.toString());
6            System.out.println("area of square = " + square.area());
7            System.out.println("perimeter of square = " + square.perimeter());
8            System.out.println("diagonal of square = " + square.diagonal());
9            SCircle disk = square.inscribingCircle();
10           System.out.println("disk = " + disk.toString());
11           SSquare diamond = disk.inscribingSquare();
12           System.out.println("diamond = " + diamond.toString());
13           System.out.println("diamond area = " + diamond.area());
14       }
15   }