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