Java Map Join join(Map map, String separator)

Description

join

License

Apache License

Declaration

public static List<String> join(Map<String, String> map, String separator) 

Method Source Code

//package com.java2s;
/*//  ww  w . j  a  v a  2s  . com
 * Copyright 1999-2011 Alibaba Group.
 *  
 * Licensed 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.ArrayList;

import java.util.List;
import java.util.Map;

public class Main {
    public static List<String> join(Map<String, String> map, String separator) {
        if (map == null) {
            return null;
        }
        List<String> list = new ArrayList<String>();
        if (map == null || map.size() == 0) {
            return list;
        }
        for (Map.Entry<String, String> entry : map.entrySet()) {
            String key = entry.getKey();
            String value = entry.getValue();
            if (value == null || value.length() == 0) {
                list.add(key);
            } else {
                list.add(key + separator + value);
            }
        }
        return list;
    }
}

Related

1. join(final Map map1, final Map map2, final Map... maps)
2. join(final Map add, final Map... imports)
3. join(List> list)
4. Join(Map map, String entryGlue, String elementGlue)
5. join(Map dst, Map src)
6. joinAll(Map> map, String separator)
7. joinArgs(Map map, String sep, String split)
8. joinLookup(Iterable elements, String separator, Map lookup)
9. joinMap(Map map)