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 VARIABLES (STATE)
12   
13       private int order;
14       private int top;
15   
16       // THE CONSTRUCTORS
17       public Die() {
18           order = 6;
19           top = (int) ((Math.random()*6)+1);
20       }
21   
22       public Die(int nrOfSides) {
23           order = nrOfSides;
24           top = (int) ((Math.random()* nrOfSides)+1);
25       }
26   
27       // THE METHODS (BEHAVIOR)
28       public int top() {
29           return top;
30       }
31   
32       public void roll() {
33           top = (int) ((Math.random()*order)+1);
34       }
35   }
36