Ellipse.setRadiusX(double value) has the following syntax.
public final void setRadiusX(double value)
In the following code shows how to use Ellipse.setRadiusX(double value) method.
import javafx.application.Application; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.paint.Color; import javafx.scene.shape.Ellipse; import javafx.stage.Stage; /*from w ww.j a v a 2 s. com*/ public class Main extends Application { public static void main(String[] args) { Application.launch(args); } @Override public void start(Stage primaryStage) { primaryStage.setTitle("Shapes"); Group root = new Group(); Scene scene = new Scene(root, 300, 300, Color.WHITE); Ellipse bigCircle = new Ellipse(20,20); bigCircle.setCenterX(20); bigCircle.setCenterY(20); bigCircle.setRadiusX(10); bigCircle.setRadiusY(10); root.getChildren().add(bigCircle); primaryStage.setScene(scene); primaryStage.show(); } }