1 /*

     2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package jdk.internal.management.remote.rest.json;

    27 

    28 import java.util.LinkedHashMap;

    29 

    30 /**

    31  * @author harsha

    32  */

    33 public class JSONObject extends LinkedHashMap<String, JSONElement> implements JSONElement {

    34 

    35     private static final long serialVersionUID = -9148596129640441014L;

    36 

    37     public JSONObject() {

    38         super();

    39     }

    40 

    41     public JSONObject(JSONObject jsonObject) {

    42         super(jsonObject);

    43     }

    44 

    45     public JSONElement put(String key, String value) {

    46         return super.put(key, new JSONPrimitive(value));

    47     }

    48 

    49     @Override

    50     public String toJsonString() {

    51         if (isEmpty()) {

    52             return null;

    53         }

    54 

    55         StringBuilder sbuild = new StringBuilder();

    56         sbuild.append("{");

    57         keySet().forEach((s) -> {

    58             sbuild.append("\"").append(s).append("\"").append(": ").

    59                     append((get(s) != null) ? get(s).toJsonString() : "null").append(",");

    60         });

    61 

    62         sbuild.deleteCharAt(sbuild.lastIndexOf(","));

    63         sbuild.append("}");

    64         return sbuild.toString();

    65     }

    66 }