Creating nested JSON object for the following structure in Java using JSONObject? [closed]

Question

I want to build a JSON Object similar to following the structure in java using JSONObject and JSONArray.

I have gone through various posts in stack overflow, which suggests using methods like push, put etc which I am unable to identify for JSONArray. Please help.

{     "name": "sample",     "def": [         {             "setId": 1,             "setDef": [                 {                     "name": "ABC",                     "type": "STRING"                 },                 {                     "name": "XYZ",                     "type": "STRING"                 }             ]         },         {             "setId": 2,             "setDef": [                 {                     "name": "abc",                     "type": "STRING"                 },                 {                     "name": "xyz",                     "type": "STRING"                 }             ]         }     ] } 

Answer 1

With the imports org.json.JSONArray and org.json.JSONObject

JSONObject object = new JSONObject(); object.put("name", "sample"); JSONArray array = new JSONArray();  JSONObject arrayElementOne = new JSONObject(); arrayElementOne.put("setId", 1); JSONArray arrayElementOneArray = new JSONArray();  JSONObject arrayElementOneArrayElementOne = new JSONObject(); arrayElementOneArrayElementOne.put("name", "ABC"); arrayElementOneArrayElementOne.put("type", "STRING");  JSONObject arrayElementOneArrayElementTwo = new JSONObject(); arrayElementOneArrayElementTwo.put("name", "XYZ"); arrayElementOneArrayElementTwo.put("type", "STRING");  arrayElementOneArray.put(arrayElementOneArrayElementOne); arrayElementOneArray.put(arrayElementOneArrayElementTwo);  arrayElementOne.put("setDef", arrayElementOneArray); array.put(arrayElementOne); object.put("def", array); 

I did not include first array's second element for clarity. Hope you got the point though.

EDIT:

The previous answer was assuming you were using org.json.JSONObject and org.json.JSONArray.

For net.sf.json.JSONObject and net.sf.json.JSONArray :

JSONObject object = new JSONObject(); object.element("name", "sample"); JSONArray array = new JSONArray();  JSONObject arrayElementOne = new JSONObject(); arrayElementOne.element("setId", 1); JSONArray arrayElementOneArray = new JSONArray();  JSONObject arrayElementOneArrayElementOne = new JSONObject(); arrayElementOneArrayElementOne.element("name", "ABC"); arrayElementOneArrayElementOne.element("type", "STRING");  JSONObject arrayElementOneArrayElementTwo = new JSONObject(); arrayElementOneArrayElementTwo.element("name", "XYZ"); arrayElementOneArrayElementTwo.element("type", "STRING");  arrayElementOneArray.add(arrayElementOneArrayElementOne); arrayElementOneArray.add(arrayElementOneArrayElementTwo);  arrayElementOne.element("setDef", arrayElementOneArray); object.element("def", array); 

Basically it's the same, replacing the method 'put' for 'element' in JSONObject, and 'put' for 'add' in JSONArray.