用Calendar类实现Date的设置

public Date dealEndTime(Date time) {
Calendar calendar = Calendar.getInstance();

calendar.setTime(time);

               calendar.set(Calendar.HOUR_OF_DAY, 23);

calendar.set(Calendar.MINUTE, 59);
calendar.set(Calendar.SECOND, 59);
calendar.set(Calendar.MILLISECOND, 999);
return calendar.getTime();

}