Editing Unicode Characters in an Editor Pane

This section provides a tutorial example on how to use ALTER TABLE statements to add, delete, modify, columns and indexes.

If you are trying to edit Chinese characters or other non-ASCII characters, you must change the write function and the read function to support Unicode characters with the UTF-8 encoding.

/* JEditorPaneUnicode.java
 * Copyright (c) 2014, HerongYang.com, All Rights Reserved.
import java.io.*;
import java.nio.*;
import java.nio.charset.*;
import java.awt.event.*;
import javax.swing.*;
public class JEditorPaneUnicode implements ActionListener {
   JFrame myFrame = null;
   JEditorPane myPane = null;
   public static void main(String[] a) {
      (new JEditorPaneUnicode()).test();
   private void test() {
      myFrame = new JFrame("JEditorPane Unicode Test");
      myPane = new JEditorPane();
         "Hello computer! - \u7535\u8111\u4F60\u597D\uFF01\n"
         + "Welcome to Herong's Website!\n"
         + "\u6B22\u8FCE\u4F60\u8BBF\u95EE\u548C\u8363\u7F51\u7AD9"
         + "\uFF01\nwww.herongyang.com");

      JMenuBar myBar = new JMenuBar();
      JMenu myMenu = getFileMenu();

   private JMenu getFileMenu() {
      JMenu myMenu = new JMenu("File");
      JMenuItem myItem = new JMenuItem("Open");

      myItem = new JMenuItem("Save");
      return myMenu;
   public void actionPerformed(ActionEvent e) {
      String cmd = ((AbstractButton) e.getSource()).getText();
      try {
         if (cmd.equals("Open")) {
            FileInputStream fis = 
               new FileInputStream("JEditorPane.txt");
            InputStreamReader in = 
               new InputStreamReader(fis, Charset.forName("UTF-8")); 
            char[] buffer = new char[1024];
            int n = in.read(buffer);
            String text = new String(buffer, 0, n);
         } else if (cmd.equals("Save")) {
            FileOutputStream fos = 
               new FileOutputStream("JEditorPane.txt");
            OutputStreamWriter out = 
               new OutputStreamWriter(fos, Charset.forName("UTF-8")); 
      } catch (Exception f) {

If you run this example, you will see a text editor pane displayed with the initial text content including some Chinese characters.

You can enter more Chinese or other language characters, click the Save link in the File menu, Chinese characters will be saved correctly, see the picture below:
Editor Pane Test

Interesting notes about this tutorial example:

Sample programs listed in this section have been tested with JDK 1.6.0 to 1.8.0.

Last update: 2014.

Table of Contents

 About This Book

 Introduction of Java Swing Package

 Graphics Environment of the Local System

 JFrame - Main Frame Class

 JLabel - Swing Label Class

 JButton - Swing Button Class

 JRadioButton - Swing Radio Button Class

 JTextField - Swing Text Field Class

 Menu Bar, Menus, Menu Items and Listeners

 Creating Internal Frames inside the Main Frame

 Layout of Components in a Container

 LookAndFeel and UIManager

 Option Dialog Boxes

JEditorPane - The Editor Pane Class

 Creating a Simple Plain Text Editor Pane

 Saving Text from an Editor Pane

 Editing HTML in an Editor Pane

Editing Unicode Characters in an Editor Pane

 javax.swing.JFileChooser - File Chooser Dialog Box

 SwingWorker - The Background Task Worker


 PDF Printing Version