Text Editor using java programming language

 Here’s a simple Java text editor program using Swing. It provides a window with basic functionality to create, open, edit, and save text files.

Code:

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

import java.io.*;

public class SimpleTextEditor extends JFrame implements ActionListener {

    JTextArea textArea;

    JScrollPane scrollPane;

    JMenuBar menuBar;

    JMenu fileMenu;

    JMenuItem newFile, openFile, saveFile, exitApp;

    public SimpleTextEditor() {

        // Window Title

        setTitle("Simple Text Editor");

        setSize(600, 400);

        setDefaultCloseOperation(EXIT_ON_CLOSE);

        // Text Area

        textArea = new JTextArea();

        scrollPane = new JScrollPane(textArea);

        add(scrollPane);

        // Menu Bar

        menuBar = new JMenuBar();

        fileMenu = new JMenu("File");

        newFile = new JMenuItem("New");

        openFile = new JMenuItem("Open");

        saveFile = new JMenuItem("Save");

        exitApp = new JMenuItem("Exit");

        newFile.addActionListener(this);

        openFile.addActionListener(this);

        saveFile.addActionListener(this);

        exitApp.addActionListener(this);

        fileMenu.add(newFile);

        fileMenu.add(openFile);

        fileMenu.add(saveFile);

        fileMenu.add(exitApp);

        menuBar.add(fileMenu);

        setJMenuBar(menuBar);

        setVisible(true);

    }

    public void actionPerformed(ActionEvent e) {

        if (e.getSource() == newFile) {

            textArea.setText("");

        } else if (e.getSource() == openFile) {

            JFileChooser fileChooser = new JFileChooser();

            int option = fileChooser.showOpenDialog(this);

            if (option == JFileChooser.APPROVE_OPTION) {

                try (BufferedReader br = new BufferedReader(new FileReader(fileChooser.getSelectedFile()))) {

                    textArea.read(br, null);

                } catch (IOException ex) {

                    ex.printStackTrace();

                }

            }

        } else if (e.getSource() == saveFile) {

            JFileChooser fileChooser = new JFileChooser();

            int option = fileChooser.showSaveDialog(this);

            if (option == JFileChooser.APPROVE_OPTION) {

                try (BufferedWriter bw = new BufferedWriter(new FileWriter(fileChooser.getSelectedFile()))) {

                    textArea.write(bw);

                } catch (IOException ex) {

                    ex.printStackTrace();

                }

            }

        } else if (e.getSource() == exitApp) {

            System.exit(0);

        }

    }

    public static void main(String[] args) {

        SwingUtilities.invokeLater(() -> new SimpleTextEditor());

    }

}

---

Features:

New File → Clears the text area.

Open File → Allows selecting and loading a text file.

Save File → Saves the current text to a file.

Exit → Closes the application