为什么在尝试将 Button 添加到 GridPane 时会收到错误消息？

Question

I'm getting an error for grid.add(button, c, r); saying "the method add(node, int, int) in the type GridPane is not applicable for the arguments (Button, int, int)". This is such a trivial thing but I cannot figure out what's wrong. I know it's saying I'm trying to put a Button where a node is supposed to be, but I've looked up examples of buttons being added to gridpanes and they have this exact syntax with no issues.

Sorry if this has been asked/answered previously, I couldn't find any question that was the same as this.

public class Demo extends Application {
    public static void main(String[] args) {
        // Nothing
    }

    @Override
    public void start(Stage stage) {
        GridPane grid = new GridPane();
        grid.setPadding(new Insets(3));
        grid.setHgap(10);
        grid.setVgap(10);

        for (int r = 0; r < 10; r++) {
            for (int c = 0; c < 10; c++) {
                int number = 10 * r + c;
                Button button = new Button();
            
                grid.add(button, c, r); 
            }
        }

        stage.show();
    }
}

Answer 1

Maybe, check imports to be sure that you are not importing from java.awt library?

import javafx.geometry.Insets;
import javafx.scene.control.Button;