1    /* 
2    * Model a die in terms of two properties 
3    * - order, the number of faces 
4    * - top, the value of the top face 
5     */
6    
7    package chance;
8    
9    public class Die {
10   
11       // the instance variable (state)
12   
13       private int order;
14       private int top;
15   
16       // The constructors
17   
18       public Die() {
19           order = 6;
20           top = (int) ((Math.random() *6) +1);
21       }
22   
23       public Die(int nrOfSides) {
24           order = nrOfSides;
25           top = (int) ((Math.random() * nrOfSides) + 1);
26       }
27   
28       // THE METHODS (BEHAVOIR)
29       public int top() {
30           return top;
31       }
32       public void roll() {
33           top = (int) ((Math.random() *order) + 1);
34       }
35   }
36