static String[] Maps = {  };

  static JComboBox<String> cb = new JComboBox<String>(directions);



==========================================
public static void loadAThing{
EventQueue.invokeLater(new Runnable() {
      @Override
      public void run() {
        JButton button = new JButton("Enter");
        int xlenght = findLength(map) + 1;
        button.addActionListener(new ActionListener() {
          public void actionPerformed(ActionEvent ev) {
           String filecontents = "";

        FileReader fr = null;
        try {
          fr = new FileReader(("resources/" + cb.ToString));
        } catch (FileNotFoundException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
        }

        int i;


        if (fr != null) {

          try {
            while ((i = fr.read()) != -1) {
              filecontents = filecontents + (char) i;

            }
          } catch (IOException  | NullPointerException n) {

            n.printStackTrace();
          }
          try {
            fr.close();
          } catch (IOException e) {
            e.printStackTrace();
          }
        });
        Object[] options = new Object[] {};
        JOptionPane frame = new JOptionPane("Please Select", JOptionPane.QUESTION_MESSAGE, JOptionPane.DEFAULT_OPTION,
            null, options, null);
        frame.add(cb);
        frame.add(cb1);
        frame.add(button);
        JDialog diag = new JDialog();
        diag.getContentPane().add(frame);
        diag.pack();
        diag.setVisible(true);
      }
    });
}