java 时间的计算与比较

  SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
Date startTime = null;//开始时间
Date endTime = null;//结束时间
Date currentTime = new Date();//当前时间
Integer showTime = lcfBeanJudges.get(1).getShowTime();//展示时间分钟数
try {
startTime = sdf.parse(lcfBeanJudges.get(1).getStartTime());//括号内为string类型的时间值
endTime = new Date(startTime.getTime()+showTime*60*1000);//加上分钟数*60*1000
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if(startTime.compareTo(currentTime)<=0 && endTime.compareTo(currentTime)>=0){//比较时间大小
luckConfBean =  lcfBeanJudges.get(1);
}