Java Map Copy copy(final Map source)

Description

Clones a map.

License

Apache License

Parameter

Parameter	Description
source	the Map to clone
K	the map key type
V	the map value type

Return

the cloned map

Declaration

public static <K, V> Map<K, V> copy(final Map<K, V> source) 

Method Source Code

//package com.java2s;
/*/* w w  w .  ja v a  2  s  .  co m*/
 * 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.
 *
 */

import java.util.HashMap;
import java.util.Map;

public class Main {
    /**
     * Clones a map.
     * 
     * @param source
     *            the Map to clone
     * @param <K>
     *            the map key type
     * @param <V>
     *            the map value type
     * @return the cloned map
     */
    public static <K, V> Map<K, V> copy(final Map<K, V> source) {

        if (source == null) {
            return null;
        }

        final Map<K, V> result = new HashMap<K, V>();
        result.putAll(source);
        return result;
    }
}

Related

1. copy(Map dest, Map src)
2. copy(Map master, Map slave)
3. copy(Map to, Map from, Object keys[])
4. copy(Map src, Map propertyRef)