Here you can find the source of formatDateHeader(long millis)
public static String formatDateHeader(long millis)
//package com.java2s; /**/*from ww w. jav a 2 s . com*/ * Copyright 2007-2016, Kaazing Corporation. All rights reserved. * * 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.Locale; public class Main { private static final DateFormat RFC822_FORMAT_PATTERN = new SimpleDateFormat( "EEE, dd MMM yyyy HH:mm:ss zzz", Locale.ENGLISH); public static String formatDateHeader(long millis) { return RFC822_FORMAT_PATTERN.format(millis); } }