Here you can find the source of compareTime(String time1, String time2, String dateFormat)
public static boolean compareTime(String time1, String time2, String dateFormat)
//package com.java2s; /*//from ww w .j a v a 2 s .co m * 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.text.SimpleDateFormat; import java.util.Date; public class Main { public static boolean compareTime(String time1) { return compareTime(time1, getCurrDateStr(), "yyyy-MM-dd HH:mm:ss"); } public static boolean compareTime(String time1, String time2) { return compareTime(time1, time2, "yyyy-MM-dd HH:mm:ss"); } public static boolean compareTime(String time1, String time2, String dateFormat) { SimpleDateFormat t1 = new SimpleDateFormat(dateFormat); SimpleDateFormat t2 = new SimpleDateFormat(dateFormat); try { Date d1 = t1.parse(time1); Date d2 = t2.parse(time2); return d1.before(d2); } catch (Exception e) { e.printStackTrace(); } return false; } public static String getCurrDateStr() { return getCurrDateStr("yyyy-MM-dd HH:mm:ss"); } public static String getCurrDateStr(String dateFormat) { return convertDateToStr(new Date(), dateFormat); } public static String convertDateToStr(Date date, String dateFormat) { if (date == null) { return ""; } SimpleDateFormat sdf = new SimpleDateFormat(dateFormat); return sdf.format(date); } }