<body>Image image = new Image("img/close-icon.png");
[enter image description here][1]Notifications notification = Notifications.create()
.title("Er[enter image description here][2]ror: ")
.text("Check your username and password again")
.hideAfter(Duration.seconds(3))
.position(Pos.BOTTOM_LEFT)
.graphic(new ImageView(image));
notification.darkStyle();
notification.show();
</body>