Java使用Random类生成随机数示例

import java.util.Random;
class RandomDie
{
  private int sides;
  private Random generator;
  public RandomDie(int s)
  {
    sides = s;
    generator = new Random( );
  }
  public int cast( )
  {
    return 1 + generator.nextInt(sides);
  }
}
public class RandomDieSimulator
{
  public static void main(String[] args)
  {
    int Num;
    RandomDie die = new RandomDie(6);
    final int TRIES = 15;
    
    for (int i = 1; i <= TRIES; i++)
    {
      Num = die.cast();
      System.out.print(Num + " ");
    }
    System.out.println();
  }
}