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package first;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.*;
import java.io.*;
public class F {
 // GUI¿Ø¼þ
 private JFrame frame = new JFrame();
 private JMenu fileMenu = new JMenu("Îļþ");
 private JMenuBar bar = new JMenuBar();
 private JMenuItem newFileItem = new JMenuItem("н¨");
 private JMenuItem openFileItem = new JMenuItem("´ò¿ª");
 private JMenuItem saveFileItem = new JMenuItem("±£´æ");
 private JMenuItem exitItem = new JMenuItem("Í˳ö");
 private JScrollPane scrollPane = null;
 private JTextArea textarea = new JTextArea(8, 40);
 private JFileChooser chooseFile;
 //
 private String filePath; // ´ò¿ªÎļþµÄ·¾¶
 private StringBuffer content = new StringBuffer(); // ÕýÎÄ
 private boolean isSaved = false; // µ±Ç°ÎļþÊÇ·ñÒѱ£´æ
 public void GUIInit() {
  // frame.setResizable(false); // ½ûÖ¹µ÷ÕûframeµÄ´óС
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  frame.setBounds(100, 100, 800, 600);
  textarea.setLineWrap(true);
  scrollPane = new JScrollPane(textarea);
  frame.add(scrollPane, BorderLayout.CENTER);
  InitMenu();
  frame.setVisible(true);
 }
 private void InitMenu() {
  frame.setJMenuBar(bar);
  bar.add(fileMenu);
  fileMenu.add(newFileItem);
  fileMenu.add(openFileItem);
  fileMenu.add(saveFileItem);
  fileMenu.add(exitItem);
  newFileItem.addActionListener(new ActionListener() {
   public void actionPerformed(ActionEvent e) {
   }
  });
  openFileItem.addActionListener(new ActionListener() {


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