public void writeDetailsToFile() throws IOException {

        Path path = Paths.get("example.txt");
        String output = "";
        for(String key: allDetails.keySet()) {
            output += "Name: " + allDetails.get(key).getName() + "\n"
                    +  "Username: " + allDetails.get(key).getUsername() + "\n"
                    + "Password: " + allDetails.get(key).getPassword() + "\n\n";
        }
        byte[] outputToBytes = output.getBytes();
        Files.write(path, outputToBytes);
    }