private List<Tweet> processTweetData(List<Twitter> twitterTweetData) throws ParseException {
		// TODO Auto-generated method stub
		List<Tweet> list=new ArrayList<Tweet>();
		try {
			for (Twitter twitter : twitterTweetData) {
				if(twitter.getData() != null)
				{
					JSONObject tweetJson=new JSONObject(twitter.getData());
					String text=tweetJson.getString("text");

					String dateString=tweetJson.getString("created_at");

					DateFormat originalFormat = new SimpleDateFormat("EEE MMM dd HH:mm:ss Z yyyy", Locale.ENGLISH);
					DateFormat targetFormat = new SimpleDateFormat("yyyy-MM-dd");
					Date date1 = originalFormat.parse(dateString);
					String date = targetFormat.format(date1);  

					SimpleDateFormat timeFormat = new SimpleDateFormat("HH:mm:ss");
					String time = timeFormat.format(date1);
					if(text != "" && date.equals(this.date)){						

						Tweet tweet=new Tweet();

						tweet.setMessage(text);						
						tweet.setTime(time);	
						System.out.println(tweet.getMessage());
						tweet.setMood(SentimentClassifier.classify(tweet.getMessage()));
						list.add(tweet);
					}
				}	
			}
			return list;
		}
		catch (JSONException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return list;
	}