JSON parsing in JAVA

JSON parsing in JAVA

package jsonsample;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

public class JsonSample {
public static void main(String[] args) {
String str = "{'status': 'ok','found': true,"
+ "'header': {'queried_sn': 'T0650GW872832', 'mfpro_env': 'deere_staging', 'elapsed_seconds': 2.314,'timestamp': '2012-06-14 07:12:18'},"
+ "'machine': { 'mfpro_machine': {'updated_at': '2012-05-22T10:23:54-04:00','matches': 3,'hours': 6809,'id': 1140530,'features': "
+ "[{'key': 'pat','label': 'Power-Angle-Tilt','feature_key': 'cons_blades'}]},"
+ "'make': {'name': 'John Deere','id': 100,'pi': null},"
+ "'mdp': 77092.5,'cat': {'mfpro_label': 'Crawler Dozers','mfpro_key': 'bk:crawler_dozers','pi': 54198},"
+ "'model': {'name': '650G','pi': null},"
+ "'potential_features': [{'key': 'attachments','label': 'Attachments',"
+ "'values': [{'key': 'bar-saw','label': 'Bar Saw'}, ]}],'base_code': '5541T'}}";
try {
JSONObject myjson = new JSONObject(str);
String status = myjson.getString("status").toString();
System.out.println("status===>" + status);
boolean found = myjson.getBoolean("found");
System.out.println("found===>" + found);
String header = myjson.getJSONObject("header").toString();
System.out.println("header===>" + header);
String machine = myjson.getJSONObject("machine").toString();
JSONObject machineJsonObject = new JSONObject(machine);
System.out.println("machine===>" + machine);
String mfpro_machine = machineJsonObject.getJSONObject("mfpro_machine").toString();
System.out.println("jsonArray===>" + mfpro_machine);
JSONObject mfpro_machineJsonObject = new JSONObject(mfpro_machine);
JSONArray featureArray = mfpro_machineJsonObject.getJSONArray("features");
int size = featureArray.length();
System.out.println("size===>" + size + "==" + featureArray);
JSONObject featureObject = null;
for (int i = 0; i < size; i++) {
featureObject = featureArray.getJSONObject(i);
}
System.out.println("featureObject==" + featureObject.toString());
System.out.println("machine===>" + featureObject.getString("key"));

System.out.println("*****************************************************");

String str1 = "{'profiles': [{'name':'john', 'age': 44}, {'name':'Alex','age':11}]}";
JSONObject myjson1 = new JSONObject(str1);
JSONArray the_json_array = myjson1.getJSONArray("profiles");
JSONObject json;

int size1 = the_json_array.length();
for (int i = 0; i < size1; i++) {
String vpn = the_json_array.getJSONObject(i).toString();
json = new JSONObject(vpn);
System.out.println("Array " + i + "========>" + vpn);
System.out.println("name===>" + json.getString("name"));
System.out.println("age===>" + json.getInt("age"));
}

} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}


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Above code is the sample code to parse JSON(Javascript Object Notation) object into java. I have used the sample JSON response which is returned from the webservice and parsed in java.
Download the json-org.jar from the given link and add to your workspace and now run the code. Check the output int the console window.
http://www.docjar.com/jar/json-org.jar