Java生成随机时间的简单随机算法

  public static Date randomDate(Date beginDate,Date endDate ){
    if(beginDate.getTime() >= endDate.getTime()){
      return new Date();
    }
    long date = random(beginDate.getTime(),endDate.getTime());
    return new Date(date);
  }
  public static long random(long begin,long end){
    long rtn = begin + (long)(Math.random() * (end - begin));
    if(rtn == begin || rtn == end){
      return random(begin,end);
    }
    return rtn;
  }