Remove all children from a group without knowing the containing nodes

问题

check this out

 Group g = new Group();
 GridPane grid = new GridPane(); // 
 g.getChildren().addAll(grid);

now my question is how do i remove this "grid" from "g" without specifying "grid" like something like this

g.getChildren().removeAll(null); //i do not know what to insert here?

thanks in advance

回答1:

If you want to remove all items from a collection, use the clear() method:

g.getChildren().clear();

来源：https://stackoverflow.com/questions/27066484/remove-all-children-from-a-group-without-knowing-the-containing-nodes