Java - Captura de passsword

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {

    JPanel panel = new JPanel();

    JLabel label = new JLabel("Introduzca la clave:");

    JPasswordField pass = new JPasswordField(10);

    panel.add(label);

    panel.add(pass);

    String[] options = new String[]{"OK", "Cancel"};

    int option = JOptionPane.showOptionDialog(this, panel, "Eliminar",

            JOptionPane.NO_OPTION, JOptionPane.QUESTION_MESSAGE,

            null, options, options[0]);

    String clave = "";

    for (char c : pass.getPassword()) {

        clave += c;

    }

    System.out.println("clave: " + clave);

    if (option == JOptionPane.OK_OPTION) {

        System.out.println("OK");

    }

    if (option == JOptionPane.CANCEL_OPTION) {

        System.out.println("Cancel");

    }

}