Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 *  
 * 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.List;
import java.util.Map;

public class Main {
    public static Map<String, List<String>> joinAll(Map<String, Map<String, String>> map, String separator) {
        if (map == null) {
            return null;
        }
        Map<String, List<String>> result = new java.util.HashMap<String, List<String>>();
        for (Map.Entry<String, Map<String, String>> entry : map.entrySet()) {
            result.put(entry.getKey(), join(entry.getValue(), separator));
        }
        return result;
    }

    public static String join(List<String> list, String separator) {
        StringBuilder sb = new StringBuilder();
        for (String ele : list) {
            if (sb.length() > 0) {
                sb.append(separator);
            }
            sb.append(ele);
        }
        return sb.toString();
    }

    public static List<String> join(Map<String, String> map, String separator) {
        if (map == null) {
            return null;
        }
        List<String> list = new java.util.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;
    }
}