import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

class Button {
    static JButton button1 = new JButton();
}



class ButtonListener1 extends Button implements ActionListener {

    @Override
    public void actionPerformed(ActionEvent e) {
        button1.setText("Привет");
        Font BigFontTR = new Font("TimesRoman", Font.BOLD, 100);
        button1.setFont(BigFontTR);
    }

}

public class Jitik extends ButtonListener1 {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Jitik");
        frame.setSize(800, 1000);
        frame.setLocationRelativeTo(null);
        JPanel panel = new JPanel(new GridLayout(2, 1, 5, 5));
        frame.add(panel);
        panel.add(button1);
        button1.addActionListener(new ButtonListener1());
        frame.setVisible(true);

        String s = button1.getText();
        System.out.println(s);


    }
}