Notes

package PoemsFromPensPackage;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class LoginPage extends JFrame implements WindowListener {
private JButton[] button = new JButton[3];
private JPanel[] panel = new JPanel[2];
private JTextField[] textF = new JTextField[2];
public LoginPage() {
Container cp = getContentPane();
cp.setLayout(new GridLayout(2, 1));
panel[0] = new JPanel(new GridLayout(2, 2));
panel[1] = new JPanel(new FlowLayout());
button[0] = new JButton("Login");
LoginAction loginAction = new LoginAction(this);
button[0].addActionListener(loginAction);
button[1] = new JButton("Register");
RegisterAction registerAction = new RegisterAction(this);
button[1].addActionListener(registerAction);
button[2] = new JButton("Forgot Password");
ForgotPasswordAction passwordAction = new ForgotPasswordAction(this);
button[2].addActionListener(passwordAction);
textF[0] = new JTextField("", 26);
textF[1] = new JTextField("", 26);
panel[0].add(new JLabel("Username: "));
panel[0].add(textF[0]);
panel[0].add(new JLabel("Password: "));
panel[0].add(textF[1]);
panel[1].add(button[0]);
panel[1].add(button[1]);
panel[1].add(button[2]);
cp.add(panel[0]);
cp.add(panel[1]);
this.prepareFrame();
}
public void prepareFrame() {
setVisible(true);
setSize(400, 160);
setResizable(false);
setTitle("Poems From Pens - Login Page");
addWindowListener(this);
}
private class LoginAction implements ActionListener {
private LoginPage loginPage;
private boolean usernameFound = false, success = false;

public LoginAction(LoginPage loginPage) {
this.loginPage = loginPage;
}
@Override
public void actionPerformed(ActionEvent e) {
BufferedReader reader = null;
if (!(textF[0].getText().isEmpty() || textF[1].getText().isEmpty())) {
String line = null;
try {
String[] user;
reader = new BufferedReader(new FileReader("users.txt"));
while ((line = reader.readLine()) != null) {
user = line.split(",");
if (user[0].equals(textF[0].getText()) && user[1].equals(textF[1].getText())) {
this.usernameFound = true;
break;
}
}
this.success = this.usernameFound;
}
catch (IOException e1) {
e1.printStackTrace();
}
finally {
try {
if (reader != null) {
reader.close();
}
}
catch (IOException e1) {
e1.printStackTrace();
}
}
if (this.success == true) {
new PFPFrame(textF[0].getText());
loginPage.dispose();
}
else {
System.out.println("Kullanıcı adı veya şifre yanlış.");
}
}
}
}
private class RegisterAction implements ActionListener {
private LoginPage loginPage;
public RegisterAction(LoginPage loginPage) {
this.loginPage = loginPage;
}
public void actionPerformed(ActionEvent evt) {
setVisible(false);
new RegisterPage(loginPage);
}
}
private class ForgotPasswordAction implements ActionListener {
private LoginPage loginPage;
public ForgotPasswordAction(LoginPage loginPage) {
this.loginPage = loginPage;
}
@Override
public void actionPerformed(ActionEvent e) {
setVisible(false);
new ForgotPasswordPage(loginPage);
}
}
@Override
public void windowOpened(WindowEvent e) {
}
@Override
public void windowClosing(WindowEvent e) {
System.exit(0);
}
@Override
public void windowClosed(WindowEvent e) {
}
@Override
public void windowIconified(WindowEvent e) {
}
@Override
public void windowDeiconified(WindowEvent e) {
}
@Override
public void windowActivated(WindowEvent e) {
}
@Override
public void windowDeactivated(WindowEvent e) {
}
}