Java Map Merge mergeMap(Map first, Map second)

Description

Merge in one map to another -all entries in the second map are merged into the first -overwriting any duplicate keys.

License

Apache License

Parameter

Parameter	Description
first	first map -the updated one.
second	the map that is merged in

Return

the first map

Declaration

public static Map<String, String> mergeMap(Map<String, String> first,
        Map<String, String> second) 

Method Source Code

//package com.java2s;
/*/*from w ww.  j a  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.Map;

public class Main {
    /**
     * Merge in one map to another -all entries in the second map are
     * merged into the first -overwriting any duplicate keys.
     * @param first first map -the updated one.
     * @param second the map that is merged in
     * @return the first map
     */
    public static Map<String, String> mergeMap(Map<String, String> first,
            Map<String, String> second) {
        first.putAll(second);
        return first;
    }
}

Related

1. mergeIfAbsent(Map map, Map toMerge)
2. mergeImportedPermissionsWithExistingPermissions( Map> existingRoleIdsToActionIds, Map importedRoleIdsToActionIds)
3. mergeListWithMap(List from, Map to)
4. mergeMap(Map map, Object[]... pairs)
5. mergeMap(Map primaryValues, Map defaultValues)
6. mergeMapIntoMap(Map> source, Map> destination)
7. mergeMapList(List> list)
8. mergeMaps(Map m1, Map m2)
9. mergeMaps(Map mainMap, Map defaultMap, String[] keys, boolean enforceValues)