[Java] Mettre contenu pdf dans un JPanel

	public PDFView() throws IOException
	{
		// set up the frame and panel
		getJFrame4().setVisible(true);

 
		// load a pdf from a byte buffer
		File file = new File(".//temp//page1.pdf");
		RandomAccessFile raf = new RandomAccessFile(file, "r");
		FileChannel channel = raf.getChannel();
		ByteBuffer buf = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel
				.size());
		pdffile = new PDFFile(buf);
 
		// show the first page
		goToPage(1);
	}
	
	public void loadPdf(File file) throws IOException
	{

		// load a pdf from a byte buffer
		RandomAccessFile raf = new RandomAccessFile(file, "r");
		FileChannel channel = raf.getChannel();
		ByteBuffer buf = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel
				.size());
		pdffile = new PDFFile(buf);
 
		// show the first page
		PDFPage page2 = pdffile.getPage(currentPage);
		jPanel3.showPage(page2);
	}
 
	public void goToPage(int nbpage) throws IndexOutOfBoundsException
	{
		if(nbpage<1||nbpage>pdffile.getNumPages())
			throw new IndexOutOfBoundsException("Invalid index requested :"+nbpage);
		PDFPage page = pdffile.getPage(nbpage);
		jPanel3.showPage(page);
	}