die.java

小型简单的旅馆预订系统. 客户:预定,更改,撤销,会员积分累积,查询预定,会员. 后台:会员更改,房间更改,预定更改,预定信息统计.

package servlet;
// File: Die.java
/* Die objects behave like a six-sided cubic die
   with the numbers 1..6 on the faces.
   They can be used in dice games.
*/

import java.util.*;

public class Die
{
  private int lastFace;
  private Random rnd;

  public
  int getRandomNum()
  {
    int raw = rnd.nextInt();
    raw = Math.abs( raw );
    raw %= 45;
    raw++;
    return raw;
  }
  public String getRandomString()
  {
	  String ran;
	  rnd = new Random();
	  roll();
	  ran=String.valueOf(getRandomNum()).concat(String.valueOf(getRandomNum())).concat(String.valueOf(getRandomNum())).concat(String.valueOf(getRandomNum()));
	  return ran;
  }

  public
  Die()
  {
    rnd = new Random();
    roll();
  }

  public
  int roll()
  {
    lastFace = getRandomNum();
    return lastFace;
  }

  public
  int getLastFace()
  {
    return lastFace;
  }
  

}// end class