Code example for Hashtable

Methods: values

	/** Get all tweets 
	 * @return     All tweets 
	public ArrayList<Tweet> getAllTweets() {
		return new ArrayList<Tweet>(tweets.values());
	/* Asynchronous fetching of tweets from */ 
	private class FetchTweetsTask extends AsyncTask<Void, Void, Boolean> {
		protected Boolean doInBackground(Void... s) {
			return fetchTweets(); 
		protected void onPostExecute(Boolean result) {			
			if(result && observers != null)
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