REST and JSON - converting string to JSON array
===

I'm new to JSON and REST. I'm working with a server that returns strings like these:

[{"username":"Hello","email":"hello@email.com","credits":"100","twitter_username":""},{"username":"Goodbye","email":"goodbye@email.com","credits":"0","twitter_username":""}]

I've managed to print them out as strings on the console, but now I want to convert them into a JSON array. The code I have so far returns no errors, but I don't know what to put into the constructor for the new JSON array. I've been referring to a piece of code sent to me by a colleague, in which the constructor was new JSONArray(response) but he never told me what 'response' was.

    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.net.HttpURLConnection;
    import java.net.MalformedURLException;
    import java.net.URL;
    
    import net.sf.json.JSONArray;
    import net.sf.json.JSONObject;
    
    import sun.misc.BASE64Encoder;
     
    public class NetClientGet {
     
    	public static void main(String[] args) {
     
    	  try {
     
    		URL url = new URL("http://username:password@mobile.crowdedmedia.co.uk/index.php/api/users/get_users/");
    		HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    		conn.setRequestMethod("GET");
    		
    		BASE64Encoder enc = new sun.misc.BASE64Encoder();
    		String userpassword = "username:password";
    		String encoded = enc.encode(userpassword.getBytes());
    		conn.setRequestProperty("Authorization", "Basic " + encoded);
     
    		if (conn.getResponseCode() != 200) {
    			throw new RuntimeException("Failed : HTTP error code : "
    					+ conn.getResponseCode());
    		}
     
    		BufferedReader br = new BufferedReader(new InputStreamReader(
    			(conn.getInputStream())));
     
    		String output;
    		System.out.println("Output from Server .... \n");
    		while ((output = br.readLine()) != null) {
    			System.out.println(output);
    		}
    		
    		JSONArray array = new JSONArray(output);
    		
    		for (int i =0; i < array.size(); i++) {
    			JSONObject row = array.getJSONObject(i);
    			String user = row.getString("username");
    			System.out.println(user);
    		}
     
    		conn.disconnect();
     
    	  } catch (MalformedURLException e) {
     
    		e.printStackTrace();
     
    	  } catch (IOException e) {
     
    		e.printStackTrace();
     
    	  }
     
    	}
    }