1    /* 
2     *using simple shapes to build on computational solutions with abstraction 
3     */
4    package shapes;
5    
6    public class ShapesThing {
7    
8        public static void main(String[] args) {
9            SSquare square = new SSquare(400.0);
10           System.out.println("square = "+ square.toString());
11           System.out.println("area of square = " + square.area());
12           System.out.println("perimeter of square = " + square.perimeter());
13           System.out.println("diagonal of square = " + square.diagonal());
14           SCircle disk = square.inscribingCircle();
15           System.out.println("disk = " + disk.toString());
16           System.out.println("area of disk = " + disk.area());
17           System.out.println("perimeter= " + disk.perimeter());
18           SSquare diamond = disk.inscribingSquare();
19           System.out.println("diamond = " + diamond.toString());
20           System.out.println("area of diamond = " + diamond.area());
21   
22       }
23   }
24