为什么我的代码停止了？

Question

我正在使用JFrame测试我的代码，在它运行并输入值之后，它既没有将值发送到我的MS sql管理工作室，也没有崩溃。我已经在我的代码的提交按钮中创建了连接，我已经尝试在类中创建处理插入的连接以及相同的结果。 Insert类中的代码在没有JFrame的情况下工作正常。

public void initialize() 
    {
        frame = new JFrame();
        frame.setBounds(100, 100, 450, 345);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JLabel lblChasis = new JLabel("Chasis num:");
        JLabel lblEngNum = new JLabel("Engine num:");
        JLabel lblMake = new JLabel("Make:");
        JLabel lblModel = new JLabel("Model:");
        JLabel lblYear = new JLabel("Year od car:");
        JLabel lblCapacity = new JLabel("Capacity:");
        JLabel lblSupplier = new JLabel("Supplier ID:");
        JLabel lblStatus = new JLabel("Status:");

        txtChasisNum = new JTextField();
        txtChasisNum.setColumns(10);

        txtEngNum = new JTextField();
        txtEngNum.setColumns(10);

        txtYear = new JTextField();
        txtYear.setColumns(10);

        txtModel = new JTextField();
        txtModel.setColumns(10);

        txtMake = new JTextField();
        txtMake.setColumns(10);

        txtStatus = new JTextField();
        txtStatus.setColumns(10);

        txtSupplier = new JTextField();
        txtSupplier.setColumns(10);

        JButton btnNewButton = new JButton("Submit");
        btnNewButton.addActionListener(new ActionListener()
        {
            @Override
            public void actionPerformed(ActionEvent e)
            {
                Insert I = new Insert();
                try
                {
                    Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
                    Connection con=DriverManager.getConnection("jdbc:sqlserver://DEEZY\\SQLEXPRESS;user=Java1234;password=barcelona;database=car_inventory");

                    chasisNnum = txtChasisNum.getText();
                    engNum = txtEngNum.getText();
                    year_of_car = txtYear.getText();  
                    model = txtModel.getText(); 
                    make = txtMake.getText();
                    capacity = txtCapacity.getText();
                    description = txtDescription.getText();
                    statTxt = txtStatus.getText();
                    sup_id = Integer.parseInt(statTxt);
                    supTxt =txtSupplier.getText();
                    status = Integer.parseInt(supTxt);

                    I.insertVehicle(engNum, chasisNnum, make, model, year_of_car, capacity, sup_id, status, description,con);
                }
                catch (NumberFormatException n) 
                {

                }
                catch(Exception e1)
                {
                    e1.printStackTrace();
                }
            }
        });

        JLabel lblDescription = new JLabel("Description");

        txtDescription = new JTextField();
        txtDescription.setColumns(10);

        txtCapacity = new JTextField();
        txtCapacity.setColumns(10);

);
        frame.getContentPane().setLayout(groupLayout);
        frame.add(btnSubmit);

    }//end of Initialize

来自插入类的

方法：

public void insertVehicle(String engNum, String chasisNum,String make,String model,String year,String capacity,int supId,int status,String description,Connection Con) 
    {
        try
        {
            CallableStatement ct = Con.prepareCall("{Call addVehicle(?,?,?,?,?,?,?,?,?)}");
            ct.setString(1, engNum);
            ct.setString(2,chasisNum);
            ct.setString(3,make);
            ct.setString(4,model);
            DateFormat format = new SimpleDateFormat("dd-mm-yyyy",Locale.ENGLISH);
            Date dt = format.parse(year);
            ct.setDate(5, new java.sql.Date(dt.getTime()));
            ct.setString(6,capacity);
            ct.setInt(7, supId);
            ct.setInt(8, status);
            ct.setString(9,description);
            System.out.println(ct.execute());

        }//end of try 

        catch(Exception e)
        {
            e.printStackTrace();

        }// end of catch

    }//end of insert into vehile