请问这个应用(application)的场景(Scene)中有多少个节点(nodes)?
public void start(Stage stage) throws Exception {
var root = new Group();
var scene = new Scene(root, 100, 100);
var stack = new StackPane();
root.getChildren().add(stack);
var grid = new GridPane();
stack.getChildren().add(grid);
var left = new Group(new javafx.scene.shape.Rectangle(20, 10), new javafx.scene.shape.Circle(10));
grid.add(left, 0, 0);
var right = new Group(new javafx.scene.shape.Rectangle(10, 20), new javafx.scene.shape.Circle(10));
grid.add(right, 1, 0);
stage.setScene(scene);
stage.show();
}
a) 4
b) 5
c) 7
d) 9
e) 10
本人认为选d,有1个root节点、1个stack节点、1个grid节点、1个left节点、1个right节点、2个rectangle节点和2个circle节点,共1+1+1+1+1+2+2=9,求大佬们看看对不对