Java Map to String toString(Map map)

Description

Like Java Map.toString() but no curly braces

License

Open Source License

Declaration

public static String toString(Map<String, ? extends Object> map) 

Method Source Code

//package com.java2s;
/*//  w  ww .  j  a v  a2  s  .c o m
 * Swift Parallel Scripting Language (http://swift-lang.org)
 * Code from Java CoG Kit Project (see notice below) with modifications.
 *
 * Copyright 2005-2014 University of Chicago
 *
 * 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.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class Main {
    /**
       Like Java Map.toString() but no curly braces
     */
    public static String toString(Map<String, ? extends Object> map) {

        if (map == null)
            return "null";

        StringBuilder sb = new StringBuilder(map.size() * 128);
        Set<String> keys = map.keySet();
        Iterator<String> it = keys.iterator();
        while (it.hasNext()) {
            String key = it.next();
            Object value = map.get(key);
            sb.append(key);
            sb.append('=');
            sb.append(value);
            if (it.hasNext())
                sb.append(',');
        }
        return sb.toString();
    }

    public static String toString(List<? extends Object> l) {
        if (l == null) {
            return "null";
        }
        return l.toString();
    }
}

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