日期差

Question

Date d1,d2;
int i=3600*24;
int k=(int)((d1.getTime()-d1.getTime()%i)-(d2.getTime()-d2.getTime()%i))/i;

Answer 1

public long dayBetween(String rq1,String rq2)
  {
    String result = "0";
    Timestamp kp = Timestamp.valueOf(rq1+" 00:00:00");
    Timestamp sb = Timestamp.valueOf(rq2+" 00:00:00");
    long l_time = sb.getTime()-kp.getTime();
    long day=l_time/86400000;
    return day;
  }

Answer 2

Calendar c1=Calendar.getInstance();
      c1.set(2004,2,25);
      Calendar c2=Calendar.getInstance();
      c2.set(2004,4,11);
      int days=(int)((c2.getTimeInMillis()-c1.getTimeInMillis())/(1000*60*60*24));