Iniciar JFrame en ícono del panel de tareas "Ocultar JFrame de la barra" en Java

Toolkit toolkit=Toolkit.getDefaultToolkit();

FrmPrincipal frmPrincipal=new FrmPrincipal();

Image image=toolkit.getImage("public/img/icon.png");

final TrayIcon trayIcon = new TrayIcon(image);

trayIcon.addActionListener(new ActionListener() {
	@Override
	public void actionPerformed(ActionEvent e) {
		frmPrincipal.setState(JFrame.NORMAL);
		frmPrincipal.setVisible(true);
	}
});

final SystemTray tray = SystemTray.getSystemTray();

tray.add(trayIcon);