public void delete(Integer id){
		Vector<String> usr = fileToVector();
		FileWriter usersFile = null;
		PrintWriter pw = null;
		String key = id.toString();
		try{
			usersFile = new FileWriter("users.txt");
			pw = new PrintWriter(usersFile);
			int i=0;
			while(i<usr.size()){
				if(!usr.get(i).equals(key)){
					pw.print(usr.get(i)+" ");
					pw.print(usr.get(i+1)+" ");
					pw.println(usr.get(i+2));
				}
				i=i+3;
			}
			usersFile.close();
		}catch (IOException e){
			e.getStackTrace();
		}
	} // end delete