Text Editor

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

import static javax.swing.JOptionPane.showInputDialog;

public class Main {

    public static JFrame frame = new JFrame("MoPad"); // Set Window title
    public static String fileDir = "";

    public static void main(String[] args) {

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Close when the 'X' is clicked
        frame.setSize(410,400); // Set window size


        JTextArea text = new JTextArea(); // Create Text Area
        JScrollPane scrollBar = new JScrollPane(text); // Add a scrollBar to the textArea

        text.setLineWrap(false); // Disable Line-Wrap
        text.setBorder(BorderFactory.createEmptyBorder(10, 7,10,10)); // Create empty space between the text box and window

        Font textFont = new Font("Comic Sans MS", Font.BOLD, 15); // Create the font object
        text.setFont(textFont); // Set Text Font

        JMenuBar menuBar = addMenus(text);

        frame.setJMenuBar(menuBar);
        frame.getContentPane().add(scrollBar); // Adds both the textArea, and the scroll bar
        frame.setVisible(true);

    }

    public static String getFileDir() {
        JFileChooser openDialog = new JFileChooser();
        openDialog.setCurrentDirectory(new File(System.getProperty("user.home")));

        int result = openDialog.showOpenDialog(null);

        if (result == JFileChooser.APPROVE_OPTION) {
            File selectedFile = openDialog.getSelectedFile();
            return selectedFile.getAbsolutePath();
        }
        else {
            return "error";
        }
    }

    public static String readFile(String dir, JTextArea text) throws IOException {
        FileInputStream file = null;
        String fileContents = "";


        try {
            file = new FileInputStream(dir);

            int c;
            while ((c = file.read()) != -1) {
                fileContents += (char) c;
            }
        } catch (FileNotFoundException e) {
            JOptionPane.showMessageDialog(null,
                    "The system could not find the file specified",
                    "Error",
                    JOptionPane.ERROR_MESSAGE);
            e.printStackTrace();
        } finally {
            file.close();
        }

        System.out.println(fileContents + "\n\n");

        text.setText(fileContents);
        return fileContents;
    }

    public static void saveFile(String text, String dir) {
        FileOutputStream file = null;

        try {
            file = new FileOutputStream(dir);
            file.write(text.getBytes());
        } catch(FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                file.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public static String getNewFileDir() {
         return JOptionPane.showInputDialog("New File Directory");
    }

    public static void createFile(String newFileDir) {
        File newFile = new File(newFileDir);


        newFile.getParentFile().mkdirs();

        try {
            newFile.createNewFile();
            fileDir = newFileDir;
        } catch (IOException e) {
            JOptionPane.showMessageDialog(null,
                    "Invalid File Directory, try again",
                    "Invalid Directory",
                    JOptionPane.ERROR_MESSAGE);
            e.printStackTrace();
        }
    }

    public static JMenuBar addMenus(JTextArea text) {
        JMenuBar menuBar = new JMenuBar();

        JMenu fileOptions = new JMenu("File");

        JMenuItem newFile = new JMenuItem("New");
        newFile.addActionListener(e -> {
            String newFileDir = getNewFileDir();
            createFile(newFileDir);

            frame.setTitle("MoPad - " + fileDir);
        });

        JMenuItem open = new JMenuItem("Open");
        open.addActionListener(e -> {
            fileDir = getFileDir();
            if(fileDir == "error") {
                fileDir = "";
            }
            try {
                readFile(fileDir, text);
            } catch (IOException err) {
                err.printStackTrace();
            }
            frame.setTitle("MoPad - " + fileDir);
        });

        JMenuItem save = new JMenuItem("Save");
        save.addActionListener(e -> {
            if(fileDir == "") {
                JOptionPane.showMessageDialog(null,
                        "No file has been opened",
                        "No file",
                        JOptionPane.WARNING_MESSAGE);
            } else {
                String strText = text.getText();
                saveFile(strText, fileDir);
                JOptionPane.showMessageDialog(null,
                        "The file (" + fileDir + ") has been saved",
                        "File Saved",
                        JOptionPane.INFORMATION_MESSAGE);
            }
        });

        JMenu helpOptions = new JMenu("Help");

        JMenuItem about = new JMenuItem("About");
        about.addActionListener(e -> {
            JOptionPane.showMessageDialog(null,
                    "Simple Text Editor written in Java using the Swing GUI Toolkit",
                    "About",
                    JOptionPane.INFORMATION_MESSAGE);
        });

        fileOptions.add(newFile);
        fileOptions.add(open);
        fileOptions.add(save);

        helpOptions.add(about);

        menuBar.add(fileOptions);
        menuBar.add(helpOptions);

        return menuBar;
    }

}