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JavaFX - 如何检查节点是否可调整大小

node 【node】
我们想知道如何检查节点是否可调整大小。
代码展示 运行结果 

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

public class Main extends Application {
    public static void main(String[] args) {
        Application.launch(args);
    }

    @Override
    public void start(Stage stage) {
        Button btn = new Button("A big button");
        
        Rectangle rect = new Rectangle(100, 50);
        rect.setFill(Color.WHITE);
        rect.setStrokeWidth(1);
        rect.setStroke(Color.BLACK);

        HBox root = new HBox();
        root.setSpacing(20);
        root.getChildren().addAll(btn, rect);

        Scene scene = new Scene(root);
        stage.setScene(scene);
        stage.setTitle("Resizable Nodes");
        stage.show();

        System.out.println("btn.isResizable(): " + btn.isResizable());
        System.out.println("rect.isResizable(): " + rect.isResizable());
    }
}