public   class  TableS  extends  JFrame
{
      private  ListenerFactory lf =  new  ListenerFactory();
      
      public  TableS ()
     {
          super (" Моё ОКОШКО ");
         ....
         JButton vichidButton =  new  JButton("Вихід");
         vichidButton.addActionListener(lsf.getVichidButtonL());
         
         ...
         setVisible(true);
     }

     class  ListenerFactory
    {

         public  ActionListener getVichidButtonL()
        {
             return   new  ActionListener(){
                 public   void  actionPerformed(ActionEvent e){
                     try  {
                         if  (st!= null ) st.close();
                    }  catch  (SQLException e1) {
                        e1.printStackTrace();
                    }
                    setDefaultCloseOperation(DISPOSE_ON_CLOSE);
                    // Здесь надо закрыть фрейм 
                }
            };
       }
}

addWindowListener(new WindowAdapter() {
   public void windowClosing(WindowEvent e) {
          ...
   }
});