哪位老兄能告诉我一个能计算出两个日期之间的天数比较简单的方法?

Question

Calendar date1=Calendar.getInstance();
    Calendar date2=Calendar.getInstance();
    date1.set(2001,1,1);
    date2.set(2002,1,1);
    long subtime=date2.getTime().getTime()-date1.getTime().getTime();
    int days=(int)(subtime/86400000); 

Answer 1

//start, stop are java.util.Date instances
long timeInMilliSecond= start.getTime()-stop.getTime();
long days=timeInMilliSecond/1000/60/60/24;
//if round   long days=(timeInMilliSecond/1000/60/60+12)/24;