    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;
    18
    19  /***
    20   * Defines a simple key value pair.
    21   * <p>
    22   * A Map Entry has considerable additional semantics over and above a simple
    23   * key-value pair. This interface defines the minimum key value, with just the
    24   * two get methods.
    25   *
    26   * @since Commons Collections 3.0
    27   * @version $Revision: 438363 $ $Date: 2006-08-30 05:48:00 +0100 (Wed, 30 Aug 2006) $
    28   *
    29   * @author Stephen Colebourne
    30   */
    31  public interface KeyValue {
    32
    33      /***
    34       * Gets the key from the pair.
    35       *
    36       * @return the key
    37       */
    38      Object getKey();
    39
    40      /***
    41       * Gets the value from the pair.
    42       *
    43       * @return the value
    44       */
    45      Object getValue();
    46
    47  }