public String getInput() {
		String str = "";
		String returnStr = null;
		while (str == "") {
			try {
				BufferedReader bufferedReader = new BufferedReader(
						new InputStreamReader(System.in));
				str = bufferedReader.readLine();
			} catch (IOException ex) {
				ex.printStackTrace();
			}
			returnStr = str.toLowerCase();
		}
		return returnStr;
	}