Here you can find the source of formatHttpDate(long time)
public static String formatHttpDate(long time)
//package com.java2s; /*// w w w . ja v a2 s .c o m * This file is part of the Heritrix web crawler (crawler.archive.org). * * Licensed to the Internet Archive (IA) by one or more individual * contributors. * * The IA licenses this file to You 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 { protected static final DateFormat HTTP_DATE_FORMAT = new SimpleDateFormat( "EEE, dd MMM yyyy HH:mm:ss zzz"); public static String formatHttpDate(long time) { synchronized (HTTP_DATE_FORMAT) { // format(Date) is not thread safe either return HTTP_DATE_FORMAT.format(new Date(time * 1000)); } } }