Ошибка компиляции - Java

import javafx.application.*;
import javafx.scene.*;
import javafx.stage.*;
import javafx.scene.layout.*;
import javafx.scene.control.*;
import javafx.geometry.*;
import javafx.event.*;
import java.io.*;
import java.util.*;
import javafx.scene.text.*;
 
class MyDictionary {
    private static final String FILENAME = "Dictionary.txt";
    private static final String FILEPATH = "E:\\NetBeansProjects\\Dictionary";
    private File file;
    private FileReader file_reader;
    private FileWriter file_writer;
    private BufferedReader buffered_reader;
    private BufferedWriter buffered_writer;
    
    MyDictionary() {
        file = new File(FILEPATH, FILENAME);
    }
    
    public void AddWord(String word, String translate) {
        try {
            file_writer = new FileWriter(file, true);
            file_writer.write(word + "\t" + translate + "\r\n");
            file_writer.close();
        } catch(IOException e) {System.out.println("Error");}
    }
    
    public void DeleteWord(String word) {
        try {
            file_reader     = new FileReader(file);
            buffered_reader = new BufferedReader(file_reader);
            
            Vector<String> vector_string = new Vector<String>();
            String string;
            
            while((string = buffered_reader.readLine()) != null) {
                if(string.contains(word)) {
                    continue;
                }
                vector_string.add(string);
            }
            buffered_reader.close();
            
            file_writer = new FileWriter(file);
            
            for(int i = 0; i < vector_string.size(); i++) {
                file_writer.write(vector_string.get(i) + "\r\n");
            }
            file_writer.close();
        } catch(IOException e) {System.out.println("Error");}
    }
    
    public Vector<String> getWords() {
        Vector<String> vector_string = new Vector<String>();
        
        try {
            file_reader = new FileReader(file);
            buffered_reader = new BufferedReader(file_reader);
            
            String string;
            
            while((string = buffered_reader.readLine()) != null && vector_string.add(string));
            buffered_reader.close();
        } catch(IOException e) {System.out.println("Error");}
        
        return vector_string;
    }
    
    public void ClearDic() {
        try {
            file_writer = new FileWriter(file);
            file_writer.close();
        } catch(IOException e) {System.out.println("Error");}
    }
}
 
public class Dictionary extends Application {
    public static void main(String[] args) {launch(args);}
    
    public void start(Stage stage) {
        MyDictionary dic = new MyDictionary();
        
        stage.setTitle("Dictionary");
        
        GridPane grid = new GridPane();
        grid.setHgap(10);
        grid.setVgap(10);
        
        Scene scene = new Scene(grid, 400, 200);
        
        stage.setScene(scene);
        
        MenuBar menu_bar = new MenuBar();
        
        Menu     M_file  = new Menu("File");
        MenuItem MI_exit = new MenuItem("Exit");
        M_file.getItems().addAll(MI_exit);
        
        Menu     M_dictionary  = new Menu("Dictionary");
        MenuItem MI_AddWord    = new MenuItem("Add word");
        MenuItem MI_DeleteWord = new MenuItem("Delete word");
        MenuItem MI_ShowWords  = new MenuItem("Show words");
        MenuItem MI_ClearDic   = new MenuItem("Clear dictionary");
        M_dictionary.getItems().addAll(MI_AddWord, MI_DeleteWord, MI_ShowWords, MI_ClearDic);
        
        Menu M_StartTraining        = new Menu("Start training");
        MenuItem MI_DefaultTraining = new MenuItem("Default training");
        M_StartTraining.getItems().add(MI_DefaultTraining);
        
        menu_bar.getMenus().addAll(M_file, M_dictionary, M_StartTraining);
        grid.add(menu_bar, 0, 0);
        
        MI_exit.setOnAction(new EventHandler<ActionEvent> () {
            public void handle(ActionEvent action_event) {
                Runtime.getRuntime().exit(0);
            }
        });
        
        MI_AddWord.setOnAction(new EventHandler<ActionEvent> () {
            public void handle(ActionEvent action_event) {
                TextField TF_word      = new TextField();
                TextField TF_translate = new TextField();
                
                TF_word.setPromptText("Enter word");
                TF_translate.setPromptText("Enter translate");
                
                grid.getChildren().clear();
                grid.add(menu_bar, 0, 0);
                grid.add(TF_word, 0, 1);
                grid.add(TF_translate, 1, 1);
                
                TF_translate.setOnAction(new EventHandler<ActionEvent> () {
                    public void handle(ActionEvent action_event) {
                        dic.AddWord(TF_word.getText(), TF_translate.getText());
                        grid.getChildren().clear();
                        grid.add(menu_bar, 0, 0);
                    }
                });
            }
        });
        
        MI_DeleteWord.setOnAction(new EventHandler<ActionEvent> () {
            public void handle(ActionEvent action_event) {
                TextField TF_word = new TextField();
                
                TF_word.setPromptText("Enter word which you want to delete");
                
                grid.getChildren().clear();
                grid.add(menu_bar, 0, 0);
                grid.add(TF_word, 0, 1);   // TF_Word находиться в 0 колонке и 1 рядке
                
                TF_word.setOnAction(new EventHandler<ActionEvent> () {
                    public void handle(ActionEvent action_event) {
                        dic.DeleteWord(TF_word.getText());
                        grid.getChildren().clear();
                        grid.add(menu_bar, 0, 0);
                    }
                });
            }
        });
        
        MI_ShowWords.setOnAction(new EventHandler<ActionEvent> () {
            public void handle(ActionEvent action_event) {
                grid.getChildren().clear();
                grid.add(menu_bar, 0, 0);
                
                for(int i = 0; i < dic.getWords().size(); i++) {
                    Text text = new Text();
                    text.setText(dic.getWords().get(i));
                    grid.add(text, 0, i+1);
                }
            }
        });
        
        MI_ClearDic.setOnAction(new EventHandler<ActionEvent> () {
            public void handle(ActionEvent action_event) {
               dic.ClearDic();
           }
        });
        
        MI_DefaultTraining.setOnAction(new EventHandler<ActionEvent> () {
            public void handle(ActionEvent action_event)  {
                for(int i = 0; i < dic.getWords().size(); i++) {
                   Text      T_Word       = new Text();
                   TextField TF_Translate = new TextField();
                   
                   T_Word.setText(dic.getWords().get(i));
                   TF_Translate.setPromptText("Enter translate");
                   
                   grid.getChildren().clear();
                   grid.add(menu_bar, 0, 0);
                   grid.add(T_Word, 0, 1);
                   grid.add(TF_Translate, 1, 1);
                   
                   TF_Translate.setOnAction(new EventHandler<ActionEvent> () {
                      public void handle(ActionEvent action_event)  {
                          if(dic.getWords().get(i).contains(TF_Translate.getText())) {
                              Text text = new Text("Correct");
                              
                              grid.getChildren().clear();
                              grid.add(menu_bar, 0, 0);
                              grid.add(text, 0, 1);
                          }
                      }
                   });
                }
            }
        });
 
        stage.show();
    }
}

MyDictionary dic = new MyDictionary();
public Vector<String> getWords();
TextField TF_Translate = new TextField();