Here you can find the source of getBetweenDate(Date startDate, Date endDate)
public static long getBetweenDate(Date startDate, Date endDate)
//package com.java2s; /*//from w w w.ja v a 2s . c om * Copyright (c) 2015 Power Group. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * * http://www.apache.org/licenses/LICENSE-2.0 * * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ import java.util.*; public class Main { public static long getBetweenDate(Date startDate, Date endDate) { long startDateTime = startDate.getTime(); long endDateTime = endDate.getTime(); long dayTime = 24 * 60 * 60 * 1000; long days = (endDateTime - startDateTime) / dayTime; return days; } }