Java Map to String toString(Map map)

Description

Returns a String representation for a Map

License

Apache License

Parameter

Parameter	Description
map	a parameter

Declaration

public static <K, V> String toString(Map<K, V> map) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2011 Danny Kunz/*ww  w.j  a  v a  2  s . c o  m*/
 * 
 * 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.Map;
import java.util.Map.Entry;

public class Main {
    /**
     * Returns a {@link String} representation for a {@link Map}
     * 
     * @param map
     * @return
     */
    public static <K, V> String toString(Map<K, V> map) {
        //
        StringBuilder retval = new StringBuilder();

        //
        if (map != null) {
            //
            retval.append("[\n");

            //
            Iterator<Entry<K, V>> iterator = map.entrySet().iterator();
            while (iterator != null && iterator.hasNext()) {
                try {
                    Entry<K, V> entry = iterator.next();
                    retval.append("  " + entry.toString() + "\n");
                } catch (Exception e) {
                }
            }

            //
            retval.append("]");
        }

        //
        return retval.toString();
    }
}

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