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    
8    package chance;
9    
10   public class Die {
11   
12       // The instance variables ( state )
13   
14       private int order;
15       private int top;
16   
17       // The constructors
18   
19       public Die() {
20           order = 6;
21           top = (int) ( (Math.random() * 6 ) + 1 );
22       }
23   
24       public Die(int nrOfSides) {
25           order = nrOfSides;
26           top = (int) ((Math.random() * nrOfSides) + 1);
27       }
28   
29       // The methods (Behavior)
30   
31       public int top(){
32   
33           return top;
34       }
35   
36       public void roll(){
37   
38           top = (int) ( ( Math.random() * order ) + 1 );
39       }
40   }
41   
42   
43   
44