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Java code:
package ÄÚ²¿Àà;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Demo extends JFrame {
JTextPane textPane = new JTextPane();
JTextArea ja = new JTextArea();
public Demo() {
super("JTextPane Demo");
getContentPane().setLayout(new BorderLayout());
final JButton buttonHome = new JButton("Go to Home");
final JButton buttonEnd = new JButton("Go to End");
final JButton buttonAdd = new JButton("Ôö¼ÓÐÐ");
ActionListener positionHandler = new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (e.getSource() == buttonHome) {
textPane.setCaretPosition(0);
textPane.requestFocus();
} else if (e.getSource() == buttonEnd) {
textPane.selectAll();
textPane.setCaretPosition(textPane.getSelect
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