/* * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.net.httpserver; import java.util.*;import com.sun.net.httpserver.*; class UnmodifiableHeaders extends Headers {         Headers map;         UnmodifiableHeaders(Headers map) {            this.map = map;        }         public int size() {return map.size();}         public boolean isEmpty() {return map.isEmpty();}         public boolean containsKey(Object key) {            return map.containsKey (key);        }         public boolean containsValue(Object value) {            return map.containsValue(value);        }         public List<String> get(Object key) {            return map.get(key);        }         public String getFirst (String key) {            return map.getFirst(key);        }          public List<String> put(String key, List<String> value) {            return map.put (key, value);        }         public void add (String key, String value) {            throw new UnsupportedOperationException ("unsupported operation");        }         public void set (String key, String value) {            throw new UnsupportedOperationException ("unsupported operation");        }         public List<String> remove(Object key) {            throw new UnsupportedOperationException ("unsupported operation");        }         public void putAll(Map<? extends String,? extends List<String>> t)  {            throw new UnsupportedOperationException ("unsupported operation");        }         public void clear() {            throw new UnsupportedOperationException ("unsupported operation");        }         public Set<String> keySet() {            return Collections.unmodifiableSet (map.keySet());        }         public Collection<List<String>> values() {            return Collections.unmodifiableCollection(map.values());        }         /* TODO check that contents of set are not modifable : security */         public Set<Map.Entry<String, List<String>>> entrySet() {            return Collections.unmodifiableSet (map.entrySet());        }         public boolean equals(Object o) {return map.equals(o);}         public int hashCode() {return map.hashCode();}    }