public void addNote(String s){
		BufferedReader reader = null;
		BufferedWriter writer = null;
		
		try {
			List<String> fileLines = new ArrayList<String>();
			reader = new BufferedReader(new FileReader(f));
			
			String line = null;
			while((line = reader.readLine()) != null){
				fileLines.add(line);
			}
			
			writer = new BufferedWriter(new FileWriter(f));
			for(String fineLine : fileLines){
				writer.write(fineLine);
				writer.newLine();
			}
			
			writer.write("#"+s);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if(reader != null){
				try {
					reader.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			
			if(writer != null){
				try {
					writer.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}