不仅如此，其他代码也有相同的问题。只是不能使用ImageView。

环境：macOS，IntelliJ

造成原因：java.lang.IllegalArgumentException：无效的URL：无效的URL或找不到资源

public class ShowHboxVbox extends Application {

    static  String s = "/Users/fangyuan/Desktop/PIC.png";

    @Override
    public void start(Stage primaryStage) {
        BorderPane borderPane = new BorderPane();
        borderPane.setTop(getHbox());

        Scene scene = new Scene(borderPane);
        primaryStage.setTitle("title");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    private HBox getHbox() {
        HBox hBox = new HBox(15);
        hBox.setPadding(new Insets(15,15,15,15));
        hBox.setStyle("-fx-background-color: gold");
        hBox.getChildren().add(new Button("computer science"));
        hBox.getChildren().add(new Button("chemist"));
        ImageView imageView = new ImageView(new Image(s));
        hBox.getChildren().add(imageView);
        return hBox;
    }
}