JavaFX：阶段和控制器生命周期...内存管理

Question

private void addNewAsset(ActionEvent event) {
    AssetController assetController = new AssetController();
    FXMLLoader loader = new FXMLLoader(getClass().getResource("assetchooser.fxml"));
    loader.setController(assetController);

    Stage assetChooserStage = new Stage();
    assetChooserStage.initModality(Modality.WINDOW_MODAL);
    assetChooserStage.initOwner(listviewAssets.getScene().getWindow());
    assetChooserStage.setTitle("Choose Asset(s)");
    try {
        assetChooserStage.setScene(new Scene((Parent)loader.load()));
    } catch (IOException e) {
        e.printStackTrace();
    }

    assetChooserStage.show();
    assetChooserStage.setOnCloseRequest((windowEvent)->{
        //DO STUFF: Get any data
        List<AssetChosenData> listAssets = assetController.getListAssetChosen();

        System.out.println("CLOSING");}
    );
}

Answer 1

这只是默认的Java行为：

您正在创建对象，如果您不再保留对它们的（强）引用，它们将被垃圾回收。

在您的示例中，您只在本地作用域（方法）中创建对象，否则不存储任何对象。