1.  public class Dice
2.  {
3.     private int face;
4.     public Dice()
5.    {
6.       face = 1;
7.    }
8.    public void roll()
9.    {
10.      face = (int)(Math.random()*6)+1;
11.   }
12.   public int getFace()
13.   {
14.      return face;
15.   }
16.   public String toString()
17.   {
18.      return "F = " + face;
19.   }
20. }




1.  public class DiceBox
2.  {
3.    public static void main(String[] args)
4.    {
5.      Dice d1 = new Dice();
6.      System.out.println(d1);
7.      d1.roll();
8.      System.out.println(d1);
9.
10.     DiceBox box = new DiceBox();
11.     box.add(d1);
12.     box.add(new Dice());
13.     box.add(new Dice());
14.
15.     System.out.println("Before shaking: total = " + box.getTotal());
16.     box.shake();
17.     System.out.println("After shaking: total = " + box.getTotal());
18.
19.     box.printDices();
20.   }
21.  private ArrayList<Dice> box = new ArrayList<Dice>();
22.  public DiceBox()
23.  {
24.  }
25.  public void add (Dice d)
26.  {
27.     box.add(d);
28.  }
29.  public void shake()
30.  {
31.     for(int i=0; i<box.size();i++)
32.         box.get(i).roll();
33.  }
34.
35.  public int getTotal()
36.  {
37.     int total = 0;
38.     for(int i=0; i<box.size();i++)
39.         total += box.get(i).getFace();
40.     return total;
41.  }
42.  public void printDices()
43.  {
44.     for(int i=0; i<box.size();i++)
45.     System.out.println((i+1)+" . Face = " +box.get(i).getFace());
46.  }
47. }