import javax.swing.$*$;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

public class RegistrationForm $\{$

private JFrame frame;

private JTextField firstNameField, lastNameField;

public RegistrationForm$()\{$

frame $=$ new JFrame$("$Registration Form"$)$;

frame.setSize$(300,200)$;

frame.setDefaultCloseOperation$($JFrame$.$EXIT$\_$ON$\_$CLOSE$)$;

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

panel.setLayout$($new BoxLayout$($panel$,$ BoxLayout.Y$\_$AXIS$))$;

JLabel firstNameLabel $=$ new JLabel$("$First Name:"$)$;

firstNameField $=$ new JTextField$()$;

JLabel lastNameLabel $=$ new JLabel$("$Last Name:"$)$;

lastNameField $=$ new JTextField$()$;

JButton submitButton $=$ new JButton$("$Submit$")$;

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

@Override

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

String firstName $=$ firstNameField.getText$()$;

String lastName $=$ lastNameField.getText$()$;

showConfirmationDialog$($firstName$,$ lastName$)$;

$\}$

$\})$;

panel.add$($firstNameLabel$)$;

panel.add$($firstNameField$)$;

panel.add$($lastNameLabel$)$;

panel.add$($lastNameField$)$;

panel.add$($submitButton$)$;

frame.add$($panel$)$;

frame.setVisible$($true$)$;

$\}$

private void showConfirmationDialog$($String firstName, String lastName$)\{$

JOptionPane.showMessageDialog$($frame$,$ "Registration successful! Welcome, $"+$ firstName $+""+$ lastName $+"!",$ "Confirmation", JOptionPane.INFORMATION$\_$MESSAGE$)$;

$\}$

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

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

$\}$

$\}$

need a screenshots and outputs ss