android.os.NetworkOnMainThreadException with android 4.2

Here i am using this code load Json. It is work fine with android
2.2 but when i am using android 4.2 it throws
android.os.NetworkOnMainThreadException exception please
give me solution

 public class
            JSONParser {

 static InputStream is =
            null;

static JSONObject jObj = null;

static
            String json = "";

// constructor
public JSONParser()
            {

}

public JSONObject getJSONFromUrl(String
            url) {

 // Making HTTP request

 try
            {
 // defaultHttpClient
 DefaultHttpClient httpClient = new
            DefaultHttpClient();
 HttpGet httpPost = new
            HttpGet(url);

 HttpResponse getResponse =
            httpClient.execute(httpPost);
 final int statusCode =
            getResponse.getStatusLine().getStatusCode();

 if (statusCode !=
            HttpStatus.SC_OK) { 
 Log.w(getClass().getSimpleName(), 


            "Error " + statusCode + " for URL " + url); 
 return null;

            }

 HttpEntity getResponseEntity =
            getResponse.getEntity();

 //HttpResponse httpResponse =
            httpClient.execute(httpPost);
 //HttpEntity httpEntity =
            httpResponse.getEntity();
 is = getResponseEntity.getContent();
            


 } catch (UnsupportedEncodingException e) {

            e.printStackTrace();
 } catch (ClientProtocolException e) {

            e.printStackTrace();
 } catch (IOException e) {
 Log.d("IO",
            e.getMessage().toString());
 e.printStackTrace();


            }


 try {
 BufferedReader reader = new
            BufferedReader(new InputStreamReader(
 is, "iso-8859-1"), 8);

            StringBuilder sb = new StringBuilder();
 String line = null;
 while
            ((line = reader.readLine()) != null) {
 sb.append(line + "\n");

            }
 is.close();
 json = sb.toString();

 } catch
            (Exception e) {
 Log.e("Buffer Error", "Error converting result " +
            e.toString());
 }

 // try parse the string to a JSON
            object
 try {
 jObj = new JSONObject(json);
 } catch
            (JSONException e) {
 Log.e("JSON Parser", "Error parsing data " +
            e.toString());
 }


 // return JSON
            String
 return
            jObj;

}

}

i
am also using google api.

class="post-text" itemprop="text">

class="normal">Answer

Write
below code into your MainActivity file after
setContentView(R.layout.activity_main);

if
            (android.os.Build.VERSION.SDK_INT > 9) {
 StrictMode.ThreadPolicy policy =
            new StrictMode.ThreadPolicy.Builder().permitAll().build();

            StrictMode.setThreadPolicy(policy);
}

And
below import statement into your java
file.

import
            android.os.StrictMode;