Java tutorial
//package com.java2s; //License from project: Apache License import java.util.Calendar; public class Main { /** * if two date is the same day, for example ,1999-11-21 00:00:00 and 1999-11-21 23:15:40 are in same day, * but 1999-11-21 00:00:00 and 2010-11-21 00:00:00 are not * * @param ltime * @param rtime * @return */ public static boolean sameDay(long ltime, long rtime) { Calendar l = Calendar.getInstance(); Calendar r = Calendar.getInstance(); l.setTimeInMillis(ltime); r.setTimeInMillis(rtime); return l.get(Calendar.YEAR) == r.get(Calendar.YEAR) && l.get(Calendar.MONTH) == r.get(Calendar.MONTH) && l.get(Calendar.DAY_OF_MONTH) == r.get(Calendar.DAY_OF_MONTH); } }