open_db jav

private void open_db() {
        try {
            Class.forName("com.mysql.jdbc.Driver");
            Con = (Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/laundryproject","root","");
            stm = (Statement) Con.createStatement();

        }catch (ClassNotFoundException | SQLException e){
            JOptionPane.showMessageDialog(null,"Koneksi gagal");
            System.out.println(e.getMessage());
        }
    }