Java tutorial
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; public class Main extends Application { public static void main(String[] args) { Application.launch(args); } @Override public void start(Stage primaryStage) { Group group = new Group(); Rectangle rect = new Rectangle(20, 20, 200, 200); rect.setStrokeWidth(2); rect.setStroke(Color.RED); group.getChildren().add(rect); Scene scene = new Scene(group, 300, 200); primaryStage.setScene(scene); primaryStage.show(); } }