Here you can find the source of format(Date dateTime)
public static String format(Date dateTime)
//package com.java2s; /*//from www.j a v a 2s.co m Copyright 2006 Ernest Micklei @ PhilemonWorks.com 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.MessageFormat; import java.text.SimpleDateFormat; import java.util.Date; public class Main { public static String format(String template, String param0) { return format(template, param0, ""); } public static String format(String template, String param0, String param1) { return format(template, param0, param1, ""); } public static String format(String template, String param0, String param1, String param2) { return MessageFormat.format(template, new Object[] { param0, param1, param2 }); } public static String format(String template, String param0, String param1, String param2, String param3) { return MessageFormat.format(template, new Object[] { param0, param1, param2, param3 }); } public static String format(String template, String param0, String param1, String param2, String param3, String param4) { return MessageFormat.format(template, new Object[] { param0, param1, param2, param3, param4 }); } /** * Use XSD datetime format without zone indication */ public static String format(Date dateTime) { String dot = new SimpleDateFormat("yyyy-MM-dd.HH:mm:ss") .format(dateTime); return dot.replaceAll("[.]", "T"); } }