Java Code for a Capitalizer program

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import java.awt.BorderLayout;
import java.awt.event.ActionEvent;

import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

/**
 * A trivial GUI application for capitalizing strings.
 * You get to type in strings into a textarea and press
 * buttons to make the string all lowercase or all uppercase.
 */
@SuppressWarnings("serial")
public class Capitalizer {

     public static void main(String[] args) {
        String initialText = "Type your Text here. Then press a button";
        final JTextArea area = new JTextArea(initialText, 8, 50);

        JPanel buttonPanel = new JPanel();
        buttonPanel.add(new JButton(new AbstractAction("To Lower Case") {
            public void actionPerformed(ActionEvent e) {
                area.setText(area.getText().toLowerCase());
            }
        }));
        buttonPanel.add(new JButton(new AbstractAction("To Upper Case") {
            public void actionPerformed(ActionEvent e) {
                area.setText(area.getText().toUpperCase());
            }
        }));

        JFrame frame = new JFrame("Capitalizer");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(new JScrollPane(area), BorderLayout.CENTER);
        frame.getContentPane().add(buttonPanel, BorderLayout.SOUTH);
        frame.pack();
        frame.setVisible(true);
    }
}