import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class PickingDemo extends Application {
	@Override
	public void start ( Stage stage ) {
		Rectangle hollow = new Rectangle(80,80);
		hollow.setFill(null);
		hollow.setStroke(Color.BLACK);
		hollow.setOnMouseClicked(e -> System.out.println("hollow"));

		Rectangle clear = new Rectangle(80,80);
		clear.setFill(Color.TRANSPARENT);
		clear.setStroke(Color.BLACK);
		clear.setOnMouseClicked(e -> System.out.println("clear"));

		HBox root = new HBox(40,hollow,clear);
		root.setPadding(new Insets(30));
		stage.setScene(new Scene(root));
		stage.setTitle("Picking");
		stage.show();
	}

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