TwitchAPIChannelUpdate Utility Class

package me.confu5ed.twitchapi;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLEncoder;
import javax.net.ssl.HttpsURLConnection;


// Lib: http://commons.apache.org/proper/commons-io/
import org.apache.commons.io.*;
// Lib: http://mvnrepository.com/artifact/org.json/json/20141113
import org.json.*;


/**
 * Utility Class for Updating Twitch Channel via TwitchAPI.
 * @version 1.0
 * @author Marcel Naeve <[email protected]>
 */
public final class TwitchChannelUpdate {

    /**
     * APIKey (OAuth2.0 Token) for TwitchAPI: channel_edit scale needed,
     * you can get one for this Application by: <code>serious-pro.de/twitchgametracker/token.html</code>.
     */
    public static String APIKey = "";

    /**
     * Request URL - TwitchAPI should be constant until the API get updated.
     */
    private static String stringUrl = "https://api.twitch.tv/kraken/channels/";

    /**
     * Twitch Channel Name.
     */
    public static String channel = "";

    /**
     * Update Channel Information by TwitchAPI.
     * @param key what will be updated? (game/status/delay)
     * @param data newValue
     * @return boolean update success=>true/failed=>false
     */
    public static boolean update(String key, String data) {

        URL url;
        String response = "";
        try {
            // Prepare
            url = new URL(stringUrl + channel);
            String basicAuth = "OAuth " + APIKey;
            String sendData = "channel[" + URLEncoder.encode(key, "UTF-8") + "]=" + URLEncoder.encode(data, "UTF-8");

            // Create Request
            HttpsURLConnection apiConnection  = (HttpsURLConnection) url.openConnection();
            apiConnection.setRequestMethod("PUT");
            apiConnection.setDoOutput(true);


            apiConnection.setRequestProperty("Accept", "application/vnd.twitchtv.v3+json");
            apiConnection.setRequestProperty("X-Requested-With", "TwitchGameTracker");
            apiConnection.setRequestProperty("Authorization", basicAuth);

            // Connect to API and send Data
            apiConnection.connect();
            apiConnection.getOutputStream().write(sendData.getBytes("UTF-8"));


            // Read Response Data
            InputStream inputStream = null;
            System.out.println("ResponseCode: " + apiConnection.getResponseCode());
            if(apiConnection.getResponseCode() == 200)
            {
                inputStream = apiConnection.getInputStream();
            } else {
                inputStream = apiConnection.getErrorStream();
            }
            if(inputStream != null) response = IOUtils.toString(inputStream);

            // Disconnect from API
            apiConnection.disconnect();

        } catch (IOException e) {
            // TODO API Request Failed: Permissions??
            e.printStackTrace();
            return false;
        }

        if(response.startsWith("{")) {
            JSONObject json = new JSONObject(response);
            // TODO check data has been changed and give optical feedback to gui
            System.out.println(json.toString());
        }
        //------------------

        return true;
    }

}