Here you can find the source of formatDate(long time)
public static String formatDate(long time)
//package com.java2s; /*/* w w w .ja v a2s.c o m*/ * Copyright 2011 International Health Terminology Standards Development Organisation. * * 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 final ThreadLocal<SimpleDateFormat> localDateFormat = new ThreadLocal<SimpleDateFormat>() { @Override protected SimpleDateFormat initialValue() { return new SimpleDateFormat("MM/dd/yy HH:mm:ss"); } }; private static String formatDate(Date date) { return formatDate(date, localDateFormat); } public static String formatDate(long time) { return formatDate(new Date(time)); } public static String formatDate(Date date, ThreadLocal<SimpleDateFormat> formatter) { if (date.getTime() == Long.MIN_VALUE) { return "beginning of time"; } if (date.getTime() == Long.MAX_VALUE) { return "end of time"; } return formatter.get().format(date); } public static String formatDate(long time, ThreadLocal<SimpleDateFormat> formatter) { return formatDate(new Date(time), localDateFormat); } }