从heightProperty()和widthProperty()中获取最大值和最小值

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class Main extends Application {

    @Override
    public void start(Stage primaryStage) {
        // 创建一个矩形
        Rectangle rectangle = new Rectangle();
        rectangle.setWidth(200);
        rectangle.setHeight(150);

        // 获取heightProperty()和widthProperty()的值
        double height = rectangle.heightProperty().get();
        double width = rectangle.widthProperty().get();

        // 获取最大值和最小值
        double maxHeight = Math.max(height, width);
        double minHeight = Math.min(height, width);

        System.out.println("最大值：" + maxHeight);
        System.out.println("最小值：" + minHeight);

        StackPane root = new StackPane(rectangle);
        Scene scene = new Scene(root, 400, 300);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

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