我测试了此代码，以创建带有图像的对话框。

final int xSize = 400;
final int ySize = 280;
final Color backgroundColor = Color.WHITE;
final String text = "SQL Browser";
final String version = "Product Version: 1.0";

final Stage aboutDialog = new Stage();
aboutDialog.initModality(Modality.WINDOW_MODAL);

Button closeButton = new Button("Close");

closeButton.setOnAction(new EventHandler<ActionEvent>() {
    @Override
    public void handle(ActionEvent arg0) {
        aboutDialog.close();
    }
});

GridPane grid = new GridPane();
grid.setAlignment(Pos.CENTER);
grid.setHgap(10);
grid.setVgap(10);
grid.setPadding(new Insets(25, 25, 25, 25));

Image img = new Image("logo.png");
ImageView imgView = new ImageView(img);

grid.add(imgView, 0, 0);

grid.add(new Text(text), 0, 1);
grid.add(new Text(version), 0, 2);
grid.add(closeButton, 14, 18);

Scene aboutDialogScene = new Scene(grid, xSize, ySize, backgroundColor);
aboutDialog.setScene(aboutDialogScene);
aboutDialog.show();

我将图像文件放入目录中/src。但是由于某些原因，图像无法显示。你能帮我改正我的错误吗？