Java Swing - TextBorder Application

/**
 * Yazar: Serdar KUZUCU
 * http://blog.asosyalbebe.com/
 */

package sedran.borders;

import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Pencere extends JFrame {
    private static final long serialVersionUID = 1L;
    private TextBorder border;
    private Font f1 = new Font("Comic Sans MS", Font.PLAIN, 11);
    private Font f2;
    public static void main(String args[]) {
        new Pencere();
    }

    public Pencere() {
        super("Border(Kenarlık) Çizimi");
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        JPanel panel = new JPanel(new GridLayout(3, 2));
        border = new TextBorder("Asosyal");
        f2 = border.getFont();
        panel.setBorder(border);

        JButton button1 = new JButton("Yuvarlak");
        button1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                border.setRounded(true);
                repaint();
            }
        });
        panel.add(button1);

        JButton button3 = new JButton("Köşeli");
        button3.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                border.setRounded(false);
                repaint();
            }
        });
        panel.add(button3);

        JButton button2 = new JButton("Mavi");
        button2.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                border.setBorderColor(Color.BLUE);
                repaint();
            }
        });
        panel.add(button2);

        JButton button4 = new JButton("Kırmızı");
        button4.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                border.setBorderColor(Color.RED);
                repaint();
            }
        });
        panel.add(button4);

        JButton button5 = new JButton("Yazıyı Değiş");
        button5.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                if(border.getText().equals("Asosyal"))
                    border.setText("Bebe");
                else
                    border.setText("Asosyal");
                repaint();
            }
        });
        panel.add(button5);

        JButton button6 = new JButton("Font");
        button6.setFont(f1);
        button6.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                if( border.getFont() == f1 )
                    border.setFont(f2);
                else
                    border.setFont(f1);
                repaint();
            }
        });
        panel.add(button6);

        setContentPane(panel);
        pack();
        setLocationRelativeTo(null);
        setVisible(true);
    }
}