错误：在类 application.YourController 中找不到 Main 方法，请将 main 方法定义为：public static void main(String[] args)

Question

我第一次使用 Java 和 JavaFX，我尝试运行这个程序，但遇到了各种各样的错误。 该应用程序由 YourController.java 组成，并附加到 modMenue.fxml 文件，现在它只是给出此错误

Error: Main method not found in class application.YourController, please define the main method as:
   public static void main(String[] args)
or a JavaFX application class must extend javafx.application.Application

关于如何解决的任何想法？

这是所有代码：

package application;

import javafx.collections.ObservableList; 
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.control.ChoiceBox;
import javafx.scene.control.Label;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.scene.control.Button;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.stage.DirectoryChooser;



public class YourController implements Initializable {
    @FXML
    private ChoiceBox<String> versionChoiceBox;
    @FXML
    private Button versionNext;
    @FXML
    private Button modFile;
    @FXML
    private Label label;
    @FXML
    private Stage stage;
    
    

    public void setVersions(ObservableList<String> versions) {
        versionChoiceBox.setItems(versions);
        versionChoiceBox.getSelectionModel().selectedIndexProperty();
        
        
        versionChoiceBox.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, selectedVersion) -> {
            System.out.println("Selected Version :   " + selectedVersion);
            //Button versionNext = new Button("versionButton");
            // Bind the disable property of the button to the selection status of the ChoiceBox
            versionNext.disableProperty().bind(versionChoiceBox.getSelectionModel().selectedItemProperty().isNull());
            
            
        });
    }
            // when initialize1 is merged into initialize it breaks everything 
         public void initialize1(URL url, ResourceBundle resourceBundle) {
            versionNext.setDisable(true); // Disable the button initially
            versionChoiceBox.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, selectedVersion) -> {
                System.out.println("Selected Version: " + selectedVersion);
                versionNext.setDisable(selectedVersion == null);

            
            });
         }
         
         //scene switcher to the mod folder selection
         public void switchTomodMenue() throws IOException {
             Parent root = FXMLLoader.load(getClass().getResource("modMenue.fxml"));
             Scene scene = new Scene(root);
             stage = (Stage) versionNext.getScene().getWindow();
             stage.setScene(scene);
             stage.show();
         }
         
                // for opening file directory
         public void openDirectoryChooser() {
            DirectoryChooser directoryChooser = new DirectoryChooser();
            File selectedDirectory = directoryChooser.showDialog(stage);
            if (selectedDirectory != null) {
                System.out.println("Selected directory: " + selectedDirectory.getAbsolutePath());
            } else {
                System.out.println("No directory selected.");
            }
            
            
        }
            

             
         
         
     
         @Override
         public void initialize(URL url, ResourceBundle resourceBundle) {
             
             
         }
         
         

         
    }

我尝试添加一个“public static void main(String[] args)”，但这只是不返回任何内容

问题常常出现在访问“浏览”按钮时，我想拉出文件管理器来选择文件，但它会说 getScene() 返回 null