Thread: Javafx editable and saveable database

Hello,
as you can probably tell from my mediocre program bellow, I am rather new to Java and to Javafx, I was able to make this work to a point. I would like the file that is opened to appear in the editor tab and other files I open to appear in the viewer tab if they are not being edited. From what I have looked up I think that the HTML text editor might be the one for me the only question I have is how do I implement it and the file chooser ( because I think that would work).

package data.base;
 
import javafx.application.Application;
import static javafx.application.Application.launch;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.*;
import javafx.scene.control.Button;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.control.PasswordField;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.*;
import javafx.scene.text.Text;
import javafx.stage.Stage;
 
public class DataBase extends Application {
 
    public static void main(String[] args) {
        launch(args);
    }
 
    @Override
    public void start( Stage loginStage ) {
        final int insets = 25;
 
        loginStage.setTitle( "This is a secure Database" );
 
        Group root = new Group();
        Scene scene = new Scene( root, 1900, 1000, new LinearGradient( 0f, 1f, 1f, 0f, true, CycleMethod.NO_CYCLE, new 
                        Stop[] {
                    new Stop( 0, Color.web( "#CC00CC" )),
                    new Stop( 0.14, Color.web( "#9966CC" )),
                    new Stop( 0.28, Color.web( "#6666FF" )),
                    new Stop( 0.43, Color.web( "#336699" )),
                    new Stop( 0.57, Color.web( "#009966" )),
                    new Stop( 0.71, Color.web( "#009933" )),
                    new Stop( 0.85, Color.web( "#00CC00" )),
                    new Stop( 1, Color.web( "#99FF99" )),
                }));
        loginStage.setScene( scene );
        Group display = new Group();
        Group root2 = new Group();
 
        GridPane grid = new GridPane();
        grid.setAlignment(Pos.CENTER);
        grid.setHgap( 10 );
        grid.setVgap( 10 );
        grid.setPadding( new Insets( insets, insets, insets, insets ));
 
        Text scenetitle = new Text("Please Signe In.");
        grid.add(scenetitle, 60, 39 );
 
        TextField userNameText = new TextField();
        userNameText.setPromptText( "Username" );
        userNameText.setPrefColumnCount( 10 );
 
        PasswordField pwText = new PasswordField();
        pwText.setPromptText( "Password" );
        pwText.setPrefColumnCount( 10 );
 
        Button submit = new Button( "Submit" );
        submit.setOnAction(new EventHandler<ActionEvent>() {
 
            @Override
                public void handle(ActionEvent t ) {
                    if ( userNameText.getText().equals( "marmalade" ) && pwText.getText().equals( "theHax" )) {
                        System.out.println( "Hey Louis" );
        Scene scene2 = new Scene( root2, 1900, 1000,
                new LinearGradient( 0f, 1f, 1f, 0f, true, CycleMethod.NO_CYCLE, new 
                        Stop[] {
                    new Stop( 0, Color.web( "#CC00CC" )),
                    new Stop( 0.14, Color.web( "#9966CC" )),
                    new Stop( 0.28, Color.web( "#6666FF" )),
                    new Stop( 0.43, Color.web( "#336699" )),
                    new Stop( 0.57, Color.web( "#009966" )),
                    new Stop( 0.71, Color.web( "#009933" )),
                    new Stop( 0.85, Color.web( "#00CC00" )),
                    new Stop( 1, Color.web( "#99FF99" )),
                }));
        loginStage.setScene( scene2 );
 
        MenuItem menuEditorNew = new MenuItem( "New" );
        menuEditorNew.setOnAction( new EventHandler<ActionEvent>() {
 
            @Override
            public void handle(ActionEvent t){
                //open a new editor
            }
        });
 
        MenuItem menuEditorOpen = new MenuItem( "Open" );
        menuEditorOpen.setOnAction( new EventHandler<ActionEvent>() {
 
            @Override
            public void handle(ActionEvent t){
                // open a file made by the editor
            }
        });
 
        MenuItem menuEditorSave = new MenuItem( "Save" );
        menuEditorSave.setOnAction( new EventHandler<ActionEvent>() {
 
            @Override
            public void handle(ActionEvent t){
                // save the editor
            }
        });
 
        TabPane tabPane = new TabPane();
 
        Tab editor = new Tab();
        Tab mainMenu = new Tab();
        Tab viewer = new Tab();
 
        editor.setText( "Editor" );
        editor.setClosable( false );
 
        mainMenu.setText( "Main Menu" );
        mainMenu.setClosable( false );
 
        viewer.setText( "View old entries" );
        viewer.setClosable( false );       
 
        tabPane.getTabs().addAll( viewer, editor, mainMenu );
 
        final Menu menu1 = new Menu( "File" );
        menu1.getItems().addAll( menuEditorNew, menuEditorOpen, menuEditorSave );
        MenuBar menuBar = new MenuBar();
        menuBar.getMenus().add( menu1 );
        root2.getChildren().add( tabPane );
        root2.getChildren().add( menuBar );
 
                    }
                    else {
                        System.out.println( "Never will you get my secrets!!");
                        loginStage.close();
                    }
                }
        });
 
        grid.add( userNameText, 60, 40 );
        grid.add( pwText, 60, 41 );
        grid.add( submit, 61, 39 );
 
        display.getChildren().add( grid );
        root.getChildren().add( display );
 
        loginStage.show();
    }
}