    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  package org.apache.commons.collections.keyvalue;
    18
    19  import java.util.Map;
    20
    21  import org.apache.commons.collections.KeyValue;
    22
    23  /***
    24   * A restricted implementation of {@link java.util.Map.Entry} that prevents
    25   * the MapEntry contract from being broken.
    26   *
    27   * @since Commons Collections 3.0
    28   * @version $Revision: 438363 $ $Date: 2006-08-30 05:48:00 +0100 (Wed, 30 Aug 2006) $
    29   *
    30   * @author James Strachan
    31   * @author Michael A. Smith
    32   * @author Neil O'Toole
    33   * @author Stephen Colebourne
    34   */
    35  public final class DefaultMapEntry extends AbstractMapEntry {
    36
    37      /***
    38       * Constructs a new entry with the specified key and given value.
    39       *
    40       * @param key  the key for the entry, may be null
    41       * @param value  the value for the entry, may be null
    42       */
    43      public DefaultMapEntry(final Object key, final Object value) {
    44          super(key, value);
    45      }
    46
    47      /***
    48       * Constructs a new entry from the specified KeyValue.
    49       *
    50       * @param pair  the pair to copy, must not be null
    51       * @throws NullPointerException if the entry is null
    52       */
    53      public DefaultMapEntry(final KeyValue pair) {
    54          super(pair.getKey(), pair.getValue());
    55      }
    56
    57      /***
    58       * Constructs a new entry from the specified MapEntry.
    59       *
    60       * @param entry  the entry to copy, must not be null
    61       * @throws NullPointerException if the entry is null
    62       */
    63      public DefaultMapEntry(final Map.Entry entry) {
    64          super(entry.getKey(), entry.getValue());
    65      }
    66
    67  }