Here you can find the source of dateToRFC1123(Date date)
public static String dateToRFC1123(Date date)
//package com.java2s; /*//from www .ja v a 2 s . com * Copyright 2012 Finalist B.V. * * 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; import java.util.Locale; import java.util.TimeZone; public class Main { private static final String GMT = "GMT"; private static final String DATE_FORMAT = "EEE, d MMM yyyy HH:mm:ss 'GMT'"; public static String dateToRFC1123(Date date) { SimpleDateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT, new Locale("en")); dateFormat.setTimeZone(TimeZone.getTimeZone(GMT)); String result = dateFormat.format(date); return result; } }