Editor con Java Swing

EditorApp.java

package GUI;

import javax.swing.*;
import java.awt.*;

public class EditorApp extends JFrame {
    Panel panel;

    public EditorApp() {
        super("Compi Editor");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(1024, 768);
        setLocationRelativeTo(null);
        panel = new Panel();
        add(panel);
    }
}

class Panel extends JPanel {
    private JMenuBar menuBar;
    private JMenu menuFile, menuBuild, menuReport, menuHelp;
    private JMenuItem menuItemNew, menuItemOpen, menuItemSave, menuItemExit, menuItemAnalize, menuItemExecute, menuItemAST,
            menuItemSymbols, menuItemErrors, menuItemAbout;
    private JPanel ventana;
    private JTextPane sourcePane, consolePane;
    private JLabel cursorPosition;

    public Panel() {
        setLayout(new BorderLayout());
        setBackground(new java.awt.Color(46, 40, 42));
        setSize(1024, 768);
        setLocation(0, 0);
        addMenu();
        ventana = new JPanel();
        ventana.setLayout(new GridLayout(1,2,5,5));
        add(ventana, BorderLayout.CENTER);
        addSourcePane();
        addConsolePane();
        addCursorPosition();
    }

    public void addMenu() {
        menuBar = new JMenuBar();
        menuBar.setBounds(0, 0, 1024, 25);
        setBackground(new java.awt.Color(46, 40, 42));
        menuBar.setForeground(new java.awt.Color(46, 40, 42));
        menuBar.setFont(new java.awt.Font("Segoe UI", 0, 12));
        addMenuFile();
        addMenuBuild();
        addMenuReport();
        addMenuHelp();
        add(menuBar, BorderLayout.NORTH);
    }

    private void addMenuFile() {
        menuFile = new JMenu("File");
        menuFile.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuFile.setForeground(new java.awt.Color(46, 40, 42));
        menuFile.setBackground(new java.awt.Color(46, 40, 42));
        menuItemNew = new JMenuItem("New");
        menuItemNew.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuItemNew.setForeground(new java.awt.Color(255, 255, 255));
        menuItemNew.setBackground(new java.awt.Color(46, 40, 42));
        menuItemOpen = new JMenuItem("Open");
        menuItemOpen.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuItemOpen.setForeground(new java.awt.Color(255, 255, 255));
        menuItemOpen.setBackground(new java.awt.Color(46, 40, 42));
        menuItemSave = new JMenuItem("Save");
        menuItemSave.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuItemSave.setForeground(new java.awt.Color(255, 255, 255));
        menuItemSave.setBackground(new java.awt.Color(46, 40, 42));
        menuItemExit = new JMenuItem("Exit");
        menuItemExit.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuItemExit.setForeground(new java.awt.Color(255, 255, 255));
        menuItemExit.setBackground(new java.awt.Color(46, 40, 42));
        menuFile.add(menuItemNew);
        menuFile.add(menuItemOpen);
        menuFile.add(menuItemSave);
        menuFile.addSeparator();
        menuFile.add(menuItemExit);
        menuBar.add(menuFile);
    }

    private void addMenuBuild() {
        menuBuild = new JMenu("Build");
        menuBuild.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuBuild.setForeground(new java.awt.Color(46, 40, 42));
        menuBuild.setBackground(new java.awt.Color(46, 40, 42));
        menuItemAnalize = new JMenuItem("Analize");
        menuItemAnalize.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuItemAnalize.setForeground(new java.awt.Color(255, 255, 255));
        menuItemAnalize.setBackground(new java.awt.Color(46, 40, 42));
        menuItemExecute = new JMenuItem("Execute");
        menuItemExecute.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuItemExecute.setForeground(new java.awt.Color(255, 255, 255));
        menuItemExecute.setBackground(new java.awt.Color(46, 40, 42));
        menuBuild.add(menuItemAnalize);
        menuBuild.add(menuItemExecute);
        menuBar.add(menuBuild);
    }

    private void addMenuReport() {
        menuReport = new JMenu("Report");
        menuReport.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuReport.setForeground(new java.awt.Color(46, 40, 42));
        menuReport.setBackground(new java.awt.Color(46, 40, 42));
        menuItemAST = new JMenuItem("AST");
        menuItemAST.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuItemAST.setForeground(new java.awt.Color(255, 255, 255));
        menuItemAST.setBackground(new java.awt.Color(46, 40, 42));
        menuItemSymbols = new JMenuItem("Symbols");
        menuItemSymbols.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuItemSymbols.setForeground(new java.awt.Color(255, 255, 255));
        menuItemSymbols.setBackground(new java.awt.Color(46, 40, 42));
        menuItemErrors = new JMenuItem("Errors");
        menuItemErrors.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuItemErrors.setForeground(new java.awt.Color(255, 255, 255));
        menuItemErrors.setBackground(new java.awt.Color(46, 40, 42));
        menuReport.add(menuItemAST);
        menuReport.add(menuItemSymbols);
        menuReport.add(menuItemErrors);
        menuBar.add(menuReport);
    }

    private void addMenuHelp() {
        menuHelp = new JMenu("Help");
        menuHelp.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuHelp.setForeground(new java.awt.Color(46, 40, 42));
        menuHelp.setBackground(new java.awt.Color(46, 40, 42));
        menuItemAbout = new JMenuItem("About");
        menuItemAbout.setFont(new java.awt.Font("Segoe UI", 0, 12));
        menuItemAbout.setForeground(new java.awt.Color(255, 255, 255));
        menuItemAbout.setBackground(new java.awt.Color(46, 40, 42));
        menuHelp.add(menuItemAbout);
        menuBar.add(menuHelp);
    }

    private void addSourcePane() {
        sourcePane = new JTextPane();
        sourcePane.setBounds(0, 0, 1024, 768);
        sourcePane.setBackground(new java.awt.Color(65, 57, 60));
        sourcePane.setForeground(new java.awt.Color(255, 255, 255));
        sourcePane.setFont(new java.awt.Font("Monospaced", 0, 14));
        sourcePane.setText("");
        ventana.add(sourcePane);
    }

    private void addConsolePane() {
        consolePane = new JTextPane();
        consolePane.setBounds(0, 768, 1024, 200);
        consolePane.setBackground(new java.awt.Color(65, 57, 60));
        consolePane.setForeground(new java.awt.Color(255, 255, 255));
        consolePane.setFont(new java.awt.Font("Monospaced", 0, 14));
        consolePane.setText("");
        ventana.add(consolePane);
    }

    private void addCursorPosition() {
        cursorPosition = new JLabel("0:0");
        cursorPosition.setBounds(0, 0, 100, 20);
        cursorPosition.setForeground(new java.awt.Color(255, 255, 255));
        cursorPosition.setFont(new java.awt.Font("Segoe UI", 0, 12));
        add(cursorPosition, BorderLayout.SOUTH);
    }
}

EditorController.java

package GUI;

public class EditorController {
}

Main.java

import GUI.EditorApp;

public class Main {
    public static void main(String[] args) {
        EditorApp app = new EditorApp();
        app.setVisible(true);
    }
}