Recommandez moi un Objet Graphique SVP

package hacktrack.highlighter;

import java.awt.Color;
import java.awt.Container;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.EventObject;

import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultHighlighter;

public class HighlighterDemo extends JFrame {
	private static final long serialVersionUID = 6086759176279462425L;

	public HighlighterDemo() {
		super("Highlighter Demo");
		init();
	}

	private void init() {
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		Container c = getContentPane();
		JTextArea textArea = new JTextArea(
				"Petite démo de 'highlight' en Swing", 10, 40);
		HighlighterListener highlighterListener = new HighlighterListener();
		textArea.addCaretListener(highlighterListener);
		textArea.addMouseListener(highlighterListener);
		textArea.addMouseMotionListener(highlighterListener);
		textArea.setBorder(BorderFactory
				.createTitledBorder("Tape du texte ici, puis sélectionne un mot ou déplace la souris sur un mot"));
		c.add(textArea);
	}

	class HighlighterListener extends MouseAdapter implements CaretListener {

		@Override
		public void caretUpdate(CaretEvent e) {
			int selectionEnd = e.getDot();
			int selectionBegin = e.getMark();
			int begin = getTextBeginIndex(getText(e), selectionBegin);
			int end = getTextEndIndex(getText(e), selectionEnd);
			try {
				highlight((JTextArea) e.getSource(), begin, end);
			} catch (BadLocationException e1) {
				e1.printStackTrace();
			}
		}

		@Override
		public void mouseMoved(MouseEvent e) {
			int x = e.getX();
			int y = e.getY();
			JTextArea textArea = (JTextArea) e.getSource();

			int locationOfCharUnderMouse = textArea
					.viewToModel(new Point(x, y));
			int begin = getTextBeginIndex(getText(e), locationOfCharUnderMouse);
			int end = getTextEndIndex(getText(e), locationOfCharUnderMouse);
			try {
				highlight((JTextArea) e.getSource(), begin, end);
			} catch (BadLocationException e1) {
				e1.printStackTrace();
			}

		}

		private String getText(EventObject e) {
			return ((JTextArea) e.getSource()).getText();
		}

		private int getTextBeginIndex(String text, int startFromIndex) {
			for (int i = startFromIndex - 1; i > -1; i--) {
				if (text.substring(i, i + 1).equals(" "))
					return i + 1;
			}
			return 0;
		}

		private int getTextEndIndex(String text, int startFromIndex) {
			for (int i = startFromIndex; i < text.length(); i++) {
				if (text.substring(i, i + 1).equals(" "))
					return i;
			}
			return text.length();
		}

		private void highlight(JTextArea textarea, int begin, int end)
				throws BadLocationException {
			DefaultHighlighter.DefaultHighlightPainter highlighter = new DefaultHighlighter.DefaultHighlightPainter(
					Color.YELLOW);
			textarea.getHighlighter().removeAllHighlights();
			textarea.getHighlighter().addHighlight(begin, end, highlighter);
		}

	}

	public static void main(String[] args) {
		HighlighterDemo demo = new HighlighterDemo();
		demo.pack();
		demo.setVisible(true);
	}
}