Here you can find the source of setTime(Date date, String timeString)
public static Date setTime(Date date, String timeString)
//package com.java2s; /*/*from ww w . j a v a2s .c om*/ Copyright [2013-2014] eBay Software Foundation 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.Calendar; import java.util.Date; public class Main { public static Date setTime(Date date, String timeString) { Calendar cal1 = Calendar.getInstance(); cal1.setTime(date); Calendar cal2 = Calendar.getInstance(); String[] time = timeString.split(":"); cal2.set(cal1.get(Calendar.YEAR), cal1.get(Calendar.MONTH), cal1.get(Calendar.DAY_OF_MONTH), Integer.parseInt(time[0]), Integer.parseInt(time[1]), Integer.parseInt(time[2])); return cal2.getTime(); } }