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