public void fileChooser(){

        FileChooser fileChooser = new FileChooser();
        fileChooser.setTitle("Open Plaintext File");
        fileChooser.getExtensionFilters().addAll(
                new FileChooser.ExtensionFilter("Open text file", "*.txt"));
        File selectedFile = fileChooser.showOpenDialog(null);

        //System.out.println("File selected: " + selectedFile.getName());

        try (BufferedReader br = new BufferedReader(
                new FileReader(
                        new File(selectedFile.toString())))) {

            String line;
            while ((line = br.readLine()) != null)

                if (!line.startsWith("!")) {
                    //System.out.println(line);

                    char[] chars = line.toCharArray();

                    for(int i = 0; i < chars.length; i++){

                        if(chars[i] == '.'){
                            System.out.print('0');
                        }
                        else{
                            System.out.print('1');
                        }

                    }
                    //System.out.println(chars);

                }

        } catch (IOException e) {
            e.printStackTrace();
        }
    }