Here you can find the source of format(Date date)
public static String format(Date date)
//package com.java2s; /**//from w ww . j a v a 2 s .c o m * Copyright 2004-2009 Tobias Gierke <tobias.gierke@code-sourcery.de> * * 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.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; public class Main { private static ThreadLocal<SimpleDateFormat> DATE_FORMAT = new ThreadLocal<SimpleDateFormat>(); public static String format(Date date) { return date == null ? "" : getDateFormat().format(date); } protected static DateFormat getDateFormat() { SimpleDateFormat result = DATE_FORMAT.get(); if (result == null) { result = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); DATE_FORMAT.set(result); } return result; } }