((DatabaseResultListener)m_Exp.getResultListener()).setDebug(dbd.getDebug());
  private void chooseURLUsername() {    String dbaseURL=((DatabaseResultListener)m_Exp.getResultListener()).getDatabaseURL();    String username=((DatabaseResultListener)m_Exp.getResultListener()).getUsername();    DatabaseConnectionDialog dbd= new DatabaseConnectionDialog(null,dbaseURL,username);    dbd.setVisible(true);          //if (dbaseURL == null) {    if (dbd.getReturnValue()==JOptionPane.CLOSED_OPTION) {      return;    }    ((DatabaseResultListener)m_Exp.getResultListener()).setUsername(dbd.getUsername());    ((DatabaseResultListener)m_Exp.getResultListener()).setPassword(dbd.getPassword());    ((DatabaseResultListener)m_Exp.getResultListener()).setDatabaseURL(dbd.getURL());     }