JSON in Java

Hi all and gurus

I am really new to Java world. Just joined the forum 2 min back.
Basically I come form Mac iOS development expanding my skill sets to Java/Android domain also.
I dont know whether this is the correct place in the forum to post my question or not let me try mine.

I am writing a JSON service that will parse JSON and return me a JSON object or an array whatever possible.
Can any one guide me to the correct way to it?

I did some R&D making it up to a successful call to Network as..................
Can you look at if error handling and garbage collection ( in method finalize () & clearGarbage() ) is alright?
Please guide

///Launcher package com.cognizant.java; import servletManager.ServletManager; /** * @author * */ public class Launcher { /** * */ public Launcher() { new ServletManager ("https://someThing.com/aService/aPage/"); } /** * @param args */ public static void main(String[] args) { new Launcher(); } } ///Servlet Manager package servletManager; import networkManager.NetworkManager; /** * @author * */ public class ServletManager { public static NetworkManager netManager; public ServletManager( String clientURL ) { try { netManager = new NetworkManager(); netManager.readStringFormURL(clientURL); } catch (Exception e) { e.printStackTrace(); } } public void finalize () { netManager = null; } } ///NetworkManager /** * */ package networkManager; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; /** * @author * */ public class NetworkManager { private URL myURL; private URLConnection myURLConnection; public NetworkManager () { System.out.println("NetworkManager called"); } public void readStringFormURL (String URL) throws Exception { //Validate the URL first try { this.validateClientUrl(URL); } catch (MalformedURLException e) { System.out.println("Malformed URL. Reason: "+e.getLocalizedMessage()); throw new MalformedURLException(); } catch (IOException e) { System.out.println("Unable to open connection. Reason: "+e.getLocalizedMessage()); throw new IOException(); } catch (Exception e) { System.out.println("Other. Reason: "+e.getLocalizedMessage()); throw new Exception(); } try { this.readStringFromURLContent(); } catch (IOException e) { System.out.println("Unable to read content. Reason: "+e.getLocalizedMessage()); throw new IOException(); } //Wrap up this.clearGarbage(); } private void validateClientUrl (String clientUrl) throws Exception { //Validate the URL first myURL = new URL(clientUrl); myURLConnection = myURL.openConnection(); myURLConnection.connect(); } private void readStringFromURLContent() throws IOException { BufferedReader in = new BufferedReader(new InputStreamReader( myURLConnection.getInputStream() ) ); String inputLine; while ((inputLine = in.readLine()) != null) System.out.println(inputLine); in.close(); } private void clearGarbage() { myURL = null; myURLConnection = null; } }


Regards
Soumya

You need not worry about garbage collection, but yes you should close all the resources which you open like FileReaders, network connections and so on. And dont rely on finalizers to do your garbage collection activity.

Then in your code you are not doing anything JSONish, I just see you are obtaining some data from a URL. For reading JSON or creating JSON have a look at GSON library. You would have to download the JAR and then add it to your classpath and use the APIs therein to parse/create JSON.

Thanks Mohamed Sanaulla,

It was really appreciable that you come across to solve my problem .

I will try your solution and revert.

Mohamed Sanaulla wrote: For reading JSON or creating JSON have a look at GSON library. You would have to download the JAR and then add it to your classpath and use the APIs therein to parse/create JSON.

Thanks anyway.

Regards
Soumya