setFolder(oldCurrentFolder);
			public void actionPerformed(ActionEvent e) {				oldCurrentFolder = (File) backFolderStack.pop();				nextFolderStack.push(currentFolder);				next.setEnabled(true);				setFolder(oldCurrentFolder);		/*		String fileName = oldCurrentFolder.getAbsolutePath();				adrZone.setText(					fileName						+ ((fileName.endsWith(File.separator))							? ""							: File.separator)); */				if (backFolderStack.empty())					back.setEnabled(false);			}