在JavaFX/fxml中打开了新的窗口，但我不希望它打开一个新的场景

Question

当我运行我的代码时，我打开了一个有3个按钮可按的窗口，我想要的是，当我按下打开新窗口的其中一个按钮时，我会“超过”上一个窗口，而不是打开一个新窗口，导致我有2个打开的窗口，而不是1个。下面是我的Guicontroller：

import javafx.event.ActionEvent;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;

import java.io.IOException;

public class GUIController {



       public void patientVindue(ActionEvent actionEvent) throws IOException {
           FXMLLoader loader = new FXMLLoader(getClass().getResource("/patientGUI.fxml"));
           GridPane gridPane = loader.load();
           Scene scene = new Scene(gridPane);
           Stage stage = new Stage();
           stage.setScene(scene);
           stage.show();
       }

       public void lægeVindue(ActionEvent actionEvent) throws IOException {
           FXMLLoader loader = new FXMLLoader(getClass().getResource("/lægeGUI.fxml"));
           GridPane gridPane = loader.load();
           Scene scene = new Scene(gridPane);
           Stage stage = new Stage();
           stage.setScene(scene);
           stage.show();
       }

       public void sundhedsprofessionelVindue(ActionEvent actionEvent) throws IOException {
           FXMLLoader loader = new FXMLLoader(getClass().getResource("/sundhedsprofessionelGUI.fxml"));
           GridPane gridPane = loader.load();
           Scene scene = new Scene(gridPane);
           Stage stage = new Stage();
           stage.setScene(scene);
           stage.show();
       }

       public tilbageVindue(ActionEvent actionEvent) throws IOException {
           FXMLLoader loader = new FXMLLoader(getClass().getResource("/gui.fxml"));
           GridPane gridPane = loader.load();
           Scene scene = new Scene(gridPane);
           Stage stage = new Stage();
           stage.setScene(scene);
           stage.show();
       }
    }

--添加更多信息。这是我使用的另一个类：

public class GUI extends Application {

    @Override
    public void start(final Stage stage) throws Exception {

        FXMLLoader loader = new FXMLLoader(getClass().getResource("/gui.fxml"));
        GridPane gridPane = loader.load();
        Scene scene = new Scene(gridPane);
        stage.setScene(scene);
        stage.show();


    }
}

Answer 1

你必须为那个窗口制作新的舞台，我建议你把舞台制作成静态的，然后把那个场景传送到那个舞台