Java tutorial
import javafx.animation.RotateTransition; import javafx.application.Application; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.paint.Color; import javafx.scene.shape.Rectangle; import javafx.stage.Stage; import javafx.util.Duration; public class Main extends Application { @Override public void start(Stage stage) { Group root = new Group(); Scene scene = new Scene(root, 500, 200); stage.setScene(scene); Rectangle rect = new Rectangle(100, 40, 100, 100); rect.setArcHeight(50); rect.setArcWidth(50); rect.setFill(Color.VIOLET); RotateTransition rt = new RotateTransition(Duration.millis(3000), rect); rt.setByAngle(180); rt.setAutoReverse(true); rt.play(); root.getChildren().add(rect); stage.show(); } public static void main(String[] args) { launch(args); } }