Java tutorial
/* * ==================================================================== * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF 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. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ package org.apache.http.client.cache; import org.apache.http.annotation.Immutable; /** * Records static constants for various HTTP header names. * @since 4.1 */ @Immutable public class HeaderConstants { public static final String GET_METHOD = "GET"; public static final String HEAD_METHOD = "HEAD"; public static final String OPTIONS_METHOD = "OPTIONS"; public static final String PUT_METHOD = "PUT"; public static final String DELETE_METHOD = "DELETE"; public static final String TRACE_METHOD = "TRACE"; public static final String LAST_MODIFIED = "Last-Modified"; public static final String IF_MATCH = "If-Match"; public static final String IF_RANGE = "If-Range"; public static final String IF_UNMODIFIED_SINCE = "If-Unmodified-Since"; public static final String IF_MODIFIED_SINCE = "If-Modified-Since"; public static final String IF_NONE_MATCH = "If-None-Match"; public static final String PRAGMA = "Pragma"; public static final String MAX_FORWARDS = "Max-Forwards"; public static final String ETAG = "ETag"; public static final String EXPIRES = "Expires"; public static final String AGE = "Age"; public static final String VARY = "Vary"; public static final String ALLOW = "Allow"; public static final String CACHE_CONTROL = "Cache-Control"; public static final String CACHE_CONTROL_NO_STORE = "no-store"; public static final String CACHE_CONTROL_NO_CACHE = "no-cache"; public static final String CACHE_CONTROL_MAX_AGE = "max-age"; public static final String CACHE_CONTROL_MAX_STALE = "max-stale"; public static final String CACHE_CONTROL_MIN_FRESH = "min-fresh"; public static final String CACHE_CONTROL_MUST_REVALIDATE = "must-revalidate"; public static final String CACHE_CONTROL_PROXY_REVALIDATE = "proxy-revalidate"; public static final String WARNING = "Warning"; public static final String RANGE = "Range"; public static final String CONTENT_RANGE = "Content-Range"; public static final String WWW_AUTHENTICATE = "WWW-Authenticate"; public static final String PROXY_AUTHENTICATE = "Proxy-Authenticate"; }