how to create a nested json in java

Question

I am having a problem in making a json in java. below is the JSON which I have to create through java code.

{\"status\":\"0\",
\"Response\":{ 
    \"abc\":[
            


        

Answer 1

The Example json is Wrong Please Update it

A JSON object should be like

    {
        "key1":"value",
        "key2":"value2"
    }

A JSON Array

    [
        {
            "key1":"value",
            "key2":"value2"
        },
        {
            "key1":"value",
            "key2":"value2"
        }
        ]

you cannot have

    //Wrong Array format (Array should be list of Objects)
    [
        "key1": "value",
        "key2": "value2"
    ]

and when you nest them they should be like

    {"key1": "value1",
        "key2": [
            {
                "key1": "value",
                "key2": "value2"
            },
            {
                "key1": "value",
                "key2": "value2"
            }
        ],
        "key3": [
            {
                "key1": "value",
                "key2": "value2"
            },
            {
                "key1": "value",
                "key2": "value2"
            }
        ]
    }

Since you where using a pair in your above example i have changed the above JSON array to a JSON Object the new sample JSON is

    {
        "status": "0",
        "Response": {
            "abc": {
                "def": {
                    "fgh": [
                        {
                            "abc": "abc",
                            "def": "abc",
                            "ghi": "abc"
                        },
                        {
                            "abc": "abc",
                            "def": "abc",
                            "ghi": "abc"
                        },
                        {
                            "abc": "abc",
                            "def": "abc",
                            "ghi": "abc"
                        }
                    ],
                    "ghi": [
                        {
                            "abc": "abc",
                            "def": "abc",
                            "ghi": "abc"
                        },
                        {
                            "abc": "abc",
                            "def": "abc",
                            "ghi": "abc"
                        },
                        {
                            "abc": "abc",
                            "def": "abc",
                            "ghi": "abc"
                        }
                    ]
                }
            }
        }
    }

And the Java Code to Create the Above JSON Object

        import org.codehaus.jettison.json.JSONArray;
        import org.codehaus.jettison.json.JSONException;
        import org.codehaus.jettison.json.JSONObject;
        public static String createJson() {
            JSONObject result = new JSONObject();
            JSONObject response = new JSONObject();
            JSONObject abc = new JSONObject();
            JSONObject def = new JSONObject();
            JSONArray fgh = new JSONArray();
            JSONArray ghi = new JSONArray();
            JSONObject sampleInnerElement = new JSONObject();
            try {
                sampleInnerElement.put("abc","abc");
                sampleInnerElement.put("def","abc");
                sampleInnerElement.put("ghi","abc");
                //populating the fgh Array
                fgh.put(sampleInnerElement);
                fgh.put(sampleInnerElement);
                fgh.put(sampleInnerElement);
                //populating the Ghi Array
                ghi.put(sampleInnerElement);
                ghi.put(sampleInnerElement);
                ghi.put(sampleInnerElement);

                def.put("fgh",fgh);
                def.put("ghi",ghi);
                abc.put("def",def);
                response.put("abc",abc);
                result.put("status","0");
                result.put("response",response);
            } catch (JSONException e) {
                e.printStackTrace();
            }
            return result.toString();
        }

Answer 2

Your JSON object has a wrong syntax: An object must contain a list of field/value pairs and is enclosed with braces {}, an array is a list of values enclosed with angle brackets [].