001    /*
002     *  Licensed to the Apache Software Foundation (ASF) under one or more
003     *  contributor license agreements.  See the NOTICE file distributed with
004     *  this work for additional information regarding copyright ownership.
005     *  The ASF licenses this file to You under the Apache License, Version 2.0
006     *  (the "License"); you may not use this file except in compliance with
007     *  the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    package org.apache.commons.collections;
018    
019    import java.util.Collection;
020    import java.util.HashMap;
021    
022    /**
023     * A {@link Bag} that is backed by a {@link HashMap}.
024     *
025     * @deprecated Moved to bag subpackage and rewritten internally. Due to be removed in v4.0.
026     * @since Commons Collections 2.0
027     * @version $Revision: 646777 $ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr 2008) $
028     * 
029     * @author Chuck Burdick
030     */
031    public class HashBag extends DefaultMapBag implements Bag {
032    
033        /**
034         * Constructs an empty <Code>HashBag</Code>.
035         */
036        public HashBag() {
037            super(new HashMap());
038        }
039    
040        /**
041         * Constructs a {@link Bag} containing all the members of the given
042         * collection.
043         * 
044         * @param coll  a collection to copy into this bag
045         */
046        public HashBag(Collection coll) {
047            this();
048            addAll(coll);
049        }
050    
051    }