create a form in java+sql +jdbc in eclipse

import java.awt.EventQueue;
import java.awt.Font;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;


import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;


/**
* User Registration using Swing
* @author javaguides.net
*
*/
public class UserRegistration extends JFrame {




private static final long serialVersionUID = 1L;
private JPanel contentPane;
private JTextField firstname;
private JTextField lastname;
private JTextField email;
private JTextField username;
private JTextField mob;
private JPasswordField passwordField;
private JButton btnNewButton;


/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
UserRegistration frame = new UserRegistration();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}


/**
* Create the frame.
*/


public UserRegistration() {
// setIconImage(Toolkit.getDefaultToolkit().getImage("C:\\Users\\User\\Desktop\\STDM.jpg"));
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(450, 190, 1014, 597);
setResizable(false);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);


JLabel lblNewUserRegister = new JLabel("New User Register");
lblNewUserRegister.setFont(new Font("Times New Roman", Font.PLAIN, 42));
lblNewUserRegister.setBounds(362, 52, 325, 50);
contentPane.add(lblNewUserRegister);


JLabel lblName = new JLabel("First name");
lblName.setFont(new Font("Tahoma", Font.PLAIN, 20));
lblName.setBounds(58, 152, 99, 43);
contentPane.add(lblName);


JLabel lblNewLabel = new JLabel("Last name");
lblNewLabel.setFont(new Font("Tahoma", Font.PLAIN, 20));
lblNewLabel.setBounds(58, 243, 110, 29);
contentPane.add(lblNewLabel);


JLabel lblEmailAddress = new JLabel("Email\r\n address");
lblEmailAddress.setFont(new Font("Tahoma", Font.PLAIN, 20));
lblEmailAddress.setBounds(58, 324, 124, 36);
contentPane.add(lblEmailAddress);


firstname = new JTextField();
firstname.setFont(new Font("Tahoma", Font.PLAIN, 32));
firstname.setBounds(214, 151, 228, 50);
contentPane.add(firstname);
firstname.setColumns(10);


lastname = new JTextField();
lastname.setFont(new Font("Tahoma", Font.PLAIN, 32));
lastname.setBounds(214, 235, 228, 50);
contentPane.add(lastname);
lastname.setColumns(10);


email = new JTextField();


email.setFont(new Font("Tahoma", Font.PLAIN, 32));
email.setBounds(214, 320, 228, 50);
contentPane.add(email);
email.setColumns(10);


username = new JTextField();
username.setFont(new Font("Tahoma", Font.PLAIN, 32));
username.setBounds(707, 151, 228, 50);
contentPane.add(username);
username.setColumns(10);


JLabel lblUsername = new JLabel("Username");
lblUsername.setFont(new Font("Tahoma", Font.PLAIN, 20));
lblUsername.setBounds(542, 159, 99, 29);
contentPane.add(lblUsername);


JLabel lblPassword = new JLabel("Password");
lblPassword.setFont(new Font("Tahoma", Font.PLAIN, 20));
lblPassword.setBounds(542, 245, 99, 24);
contentPane.add(lblPassword);


JLabel lblMobileNumber = new JLabel("Mobile number");
lblMobileNumber.setFont(new Font("Tahoma", Font.PLAIN, 20));
lblMobileNumber.setBounds(542, 329, 139, 26);
contentPane.add(lblMobileNumber);


mob = new JTextField();
mob.setFont(new Font("Tahoma", Font.PLAIN, 32));
mob.setBounds(707, 320, 228, 50);
contentPane.add(mob);
mob.setColumns(10);


passwordField = new JPasswordField();
passwordField.setFont(new Font("Tahoma", Font.PLAIN, 32));
passwordField.setBounds(707, 235, 228, 50);
contentPane.add(passwordField);


btnNewButton = new JButton("Register");
// static final String JDBC_DRIVER="com.mysql.cj.jdbc.Driver";
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String firstName = firstname.getText();
String lastName = lastname.getText();
String emailId = email.getText();
String userName = username.getText();
String mobileNumber = mob.getText();
int len = mobileNumber.length();
String password = passwordField.getText();


String msg = "" + firstName;
msg += " \n";
if (len != 10) {
JOptionPane.showMessageDialog(btnNewButton, "Enter a valid mobile number");
}


try {
Connection connection = DriverManager.getConnection("jdbc:mysql://localhost/jdbcproject", "root", "@nkush1905701");


String query = "INSERT INTO account values('" + firstName + "','" + lastName + "','" + userName + "','" +
password + "','" + emailId + "','" + mobileNumber + "')";


Statement sta = connection.createStatement();
int x = sta.executeUpdate(query);
if (x == 0) {
JOptionPane.showMessageDialog(btnNewButton, "This is alredy exist");
} else {
JOptionPane.showMessageDialog(btnNewButton,
"Welcome, " + msg + "Your account is sucessfully created");
}
connection.close();
} catch (Exception exception) {
exception.printStackTrace();
}
}
});
btnNewButton.setFont(new Font("Tahoma", Font.PLAIN, 22));
btnNewButton.setBounds(399, 447, 259, 74);
contentPane.add(btnNewButton);
}
}