need help i need to add a generic class and a sorting and search feature and Add threads and concurrency to my code this is my code public class AddCarForm extends JFrame $\{$

private JTextField makeField;

private JTextField modelField;

private JTextField yearField;

private JTextField priceField;

public AddCarForm$()\{$

setTitle$("$Add Car"$)$;

setSize$(400,200)$;

setDefaultCloseOperation$($JFrame$.$DISPOSE$\_$ON$\_$CLOSE$)$;

JPanel panel $=$ new JPanel$()$;

panel.setLayout$($new GridLayout$(4,2))$;

JLabel makeLabel $=$ new JLabel$("$Make:$")$;

makeField $=$ new JTextField$()$;

JLabel modelLabel $=$ new JLabel$("$Model:$")$;

modelField $=$ new JTextField$()$;

JLabel yearLabel $=$ new JLabel$("$Year:$")$;

yearField $=$ new JTextField$()$;

JLabel priceLabel $=$ new JLabel$("$Price:$")$;

priceField $=$ new JTextField$()$;

JButton addButton $=$ new JButton$("$Add Car"$)$;

addButton.addActionListener$($new ActionListener$()\{$

public void actionPerformed$($ActionEvent e$)\{$

try $\{$

String make $=$ makeField.getText$()$;

String model $=$ modelField.getText$()$;

int year $=$ Integer.parseInt$($yearField$.$getText$())$;

double price $=$ Double.parseDouble$($priceField$.$getText$())$;

$//$ Assert that the price is non$-$negative

assert price $>=0$ : "Price should be non$-$negative";

$//$ Get the database connection

Connection connection $=$ getDatabaseConnection$()$;

$//$ Insert the new car into the database

if $($connection $!=$ null$)\{$

try $\{$

$//$ database insertion code here

String sql $=$ "INSERT INTO Vehicle $($make$,$ model, year, price$)$ VALUES $(?,?,?,?)"$;

try $($PreparedStatement statement $=$ connection.prepareStatement$($sql$))\{$

statement.setString$(1,$ make$)$;

statement.setString$(2,$ model$)$;

statement.setInt$(3,$ year$)$;

statement.setDouble$(4,$ price$)$;

statement.executeUpdate$()$;

System.out.println$("$Car added successfully."$)$;

$\}$

$\}$ catch $($SQLException ex$)\{$

ex$.$printStackTrace$()$;

JOptionPane.showMessageDialog$($null$,$ "Error adding car to the database", "Database Error", JOptionPane.ERROR$\_$MESSAGE$)$;

$\}$ finally $\{$

$//$ Close the database connection

try $\{$

connection.close$()$;

$\}$ catch $($SQLException ex$)\{$

ex$.$printStackTrace$()$;

$\}$

$\}$

$\}$

$\}$ catch $($NumberFormatException ex$)\{$

ex$.$printStackTrace$()$;

JOptionPane.showMessageDialog$($null$,$ "Invalid number format for year or price", "Input Error", JOptionPane.ERROR$\_$MESSAGE$)$;

$\}$

$\}$

$\})$;

panel.add$($makeLabel$)$;

panel.add$($makeField$)$;

panel.add$($modelLabel$)$;

panel.add$($modelField$)$;

panel.add$($yearLabel$)$;

panel.add$($yearField$)$;

panel.add$($priceLabel$)$;

panel.add$($priceField$)$;

panel.add$($addButton$)$;

add$($panel$)$;

setVisible$($true$)$;

$\}$

private Connection getDatabaseConnection$()\{$

try $\{$

return DriverManager.getConnection$("$jdbc:mysql:$//$localhost:$3306/$carjavasql$",$ "root", "root"$)$;

$\}$ catch $($SQLException e$)\{$

e$.$printStackTrace$()$;

return null;

$\}$

$\}$

public static void main$($String$[]$ args$)\{$

SwingUtilities.invokeLater$(()->$ new AddCarForm$())$;

$\}$

$\}$