import javax.swing.*;
import javax.swing.border.EmptyBorder;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Arrays;
import java.util.Scanner;
import static javax.imageio.ImageIO.read;

public class UserBase {
    public static void main(String[] args) {}
}

class StartWindow extends JFrame {
    private static final long serialVersionUID = 1L;

    public StartWindow() {}
}

class RegisterWindow extends JFrame {
    private static final long serialVersionUID = 1L;
    String avatarFilePath = "";
    public RegisterWindow() {}
    private static boolean arePasswordsEqual(char[] pass1, char[] pass2) {}
}

class LoginWindow extends JFrame {
    private static final long serialVersionUID = 1L;

    public LoginWindow() {}
}

class MainWindow extends JFrame {
    private static final long serialVersionUID = 1L;
    public MainWindow(String name, String login, String age, String sex, String avatarPath) throws IOException {}
}

class MainWindowMenuBar extends JMenuBar {
    private static final long serialVersionUID = 1L;

    public MainWindowMenuBar(MainWindow mainWindow) {}
}