Based on Java Swing Student Information Management System

package ;

import ;

import ;

import ;

import ;

import ;

import ;

import ;

import ;

import ;

import ;

import ;

import ;

import ;

import ;

public class LoginFrame extends JFrame

{

private static final long serialVersionUID = 7305643042548754587L;

JButton btnLogin;

JButton btnCancel;

JTextField txtUsername;

JPasswordField txtPassword;

MyDB myDB=new MyDB();

public LoginFrame()

{

setSize(400,200);

setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

setResizable(false);

setLocationRelativeTo(null);

setTitle("Login");

JLabel lblUsername=new JLabel("Account number:");

JLabel lblPassword=new JLabel("Password:");

txtUsername=new JTextField(30);

txtPassword=new JPasswordField(30);

JPanel panelUsername=new JPanel();

(lblUsername);

(txtUsername);

JPanel panelPassword=new JPanel();

(lblPassword);

(txtPassword);

btnLogin=new JButton("OK.");

btnCancel=new JButton("Reset.");

JPanel btnPanel=new JPanel();

(btnLogin);

(btnCancel);

JPanel coutainer=new JPanel();

(panelUsername);

(panelPassword);

(btnPanel);

add(coutainer);

addListeners();

setVisible(true);

}

public void addListeners()

{

ActionListener btnLoginClick= new ActionListener()

{

@Override

public void actionPerformed(ActionEvent e)

{

Student student=new Student();

(());

int result= new LoginDao().select(()+"", ()+"");

if(result>0)

{

(null, "Login successful.");

setVisible(false);

MainFrame mainFrame =new MainFrame();

(true);

}

else{

(null, "Wrong username or password.");

}

}

};

(btnLoginClick);

}

}