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       // INSTANCE VARIABLES
13   
14       private int order;
15       private int top;
16   
17       // CONSTRUCTORS
18   
19       public Die() {
20           order = 6;
21           top = (int) ( ( Math.random() * 6 ) + 1);
22       }
23       public Die(int nrOfSides) {
24           order = nrOfSides;
25           top = (int) ( ( Math.random() * nrOfSides ) +1);
26       }
27       // METHOD
28   
29       public int top() {
30           return top;
31       }
32   
33       public void roll() {
34           top = (int) ( ( Math.random() * order ) +1);
35       }
36   }
37