java数据从数据库到JTable

Question

我想用数据库填充一个表，我在项目中有两个类，在第二个类中有createANDShowGUI方法，我想在top（Mozijegy）类中调用这个方法，我的方法在public Mozijegy()中调用。我试图在public Mozijegy（）中调用，但程序没有看到我的createANDShowGUI方法

package mozijegy;

public final class Mozijegy extends JFrame implements ActionListener {

    public Mozijegy() {
        conn = ConnectDB();
        menu();
        foglalas();
        arlista();
        szekfog();
        comboitem();
    }

    public Connection ConnectDB()

    public void comboitem()

    public void menu()

    class tablafeltoltes extends JPanel {

        private boolean DEBUG = false;
        static final String JDBC_DRIVER = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
        static final String DB_URL = "jdbc:sqlserver://FARKAS-PC;databaseName=Mozi;integratedSecurity=true;";
        Connection conn = null;
        Statement stmt = null;
        Vector<Vector<String>> data = new Vector<Vector<String>>();

        public tablafeltoltes() {
            super(new GridLayout(1, 0));
            Vector<String> columnNames = new Vector<String>();
            columnNames.add("Név");
            columnNames.add("Mennyiség");
            columnNames.add("Kiszerelés");
            columnNames.add("Ár");
            String query = "select Név, Mennyiség, Kiszerelés, Ár from Arlista";
            try {
                conn = DriverManager.getConnection(DB_URL);
                stmt = conn.createStatement();
                ResultSet rs = stmt.executeQuery(query);
                while (rs.next()) {
                    Vector<String> vstring = new Vector<String>();
                    vstring.add(rs.getString("Név"));
                    vstring.add(rs.getString("Mennyiség"));
                    vstring.add(rs.getString("Kiszerelés"));
                    vstring.add(rs.getString("Ár"));
                    vstring.add("\n\n\n\n\n\n\n");
                    data.add(vstring);
                }
            } catch (SQLException e) {
                e.printStackTrace();
            } finally {
                if (stmt != null) {
                    try {
                        stmt.close();
                    } catch (SQLException ex) {
                    }
                }
            }
            DefaultTableModel model = new DefaultTableModel(data, columnNames);
            final JTable table = new JTable(model);
            table.setPreferredScrollableViewportSize(new Dimension(500, 70));
            table.setFillsViewportHeight(true);
            JScrollPane scrollPane = new JScrollPane(table);
            add(scrollPane);
        }

        private void printDebugData(JTable table) {
            int numRows = table.getRowCount();
            int numCols = table.getColumnCount();
            javax.swing.table.TableModel model = table.getModel();
            System.out.println("Value of data: ");
            for (int i = 0; i < numRows; i++) {
                System.out.print("    row " + i + ":");
                for (int j = 0; j < numCols; j++) {
                    System.out.print("  " + model.getValueAt(i, j));
                }
                System.out.println();
            }
            System.out.println("--------------------------");
        }

        public void createAndShowGUI() {
            JFrame frame = new JFrame("Database Data");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            tablafeltoltes newContentPane = new tablafeltoltes();
            newContentPane.setOpaque(true);
            frame.setContentPane(newContentPane);
            frame.pack();
            frame.setVisible(true);
        }

        public void main(String[] args) {
            javax.swing.SwingUtilities.invokeLater(new Runnable() {
                public void run() {
                    createAndShowGUI();
                }
            });
        }
    }

    public static void main(String[] args) {
        Mozijegy /*mozijegy*/ = new Mozijegy();
    }
}