Creating objects and remove them on the mouse, click

I'm stuck with the problem of deleting objects in the scene. Here's my problem:

The mouse click, I create a circle and apply the translation.

and on the second click of mouse, I want to delete it off the coast.

So, to clear the scene, I tried,

MouseEvent {}

root.getChildren.removeAll)

create circle

}

doesn't seem to work. Any ideas. I fell on the canvas, but I don't know if I need, because animate a circle works well, but not clearing it...

The Node class has a research method that is used to find a node in the container based on an id:

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;

public class RemoveNodesFromCont extends Application {
    @Override
    public void start(Stage primaryStage) {
        final Group root = new Group();
        Scene scene = new Scene(root, 400, 350, Color.AQUA);
        scene.setOnMouseClicked(event -> {
            Node n = root.lookup("#myCircle");
            if (n == null) {
                Circle circle = new Circle(event.getX(), event.getY(), 50, Color.BLUE);
                circle.setId("myCircle");
                root.getChildren().add(circle);
                System.out.println("The circle is created");
            } else {
                root.getChildren().remove(n);
                System.out.println("The circle is removed");
            }
        }
        );
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

Tags: Java

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