帮我用java写下面这道题：生成一个简单文本编辑器，将生成的文本存入文件，如果有打开、存盘、关闭等菜单更佳。GUI界面可以自己灵活设计，同时实现窗体关闭退出功能。

下面是一个简单的文本编辑器的 Java 代码：

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.filechooser.FileNameExtensionFilter;

public class TextEditor extends JFrame {

    private JTextArea textArea;
    private JFileChooser fileChooser;
    private File currentFile;

    public TextEditor() {
        setTitle("Text Editor");
        setSize(800, 600);
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        // 创建菜单栏
        JMenuBar menuBar = new JMenuBar();
        setJMenuBar(menuBar);

        // 创建菜单项
        JMenuItem openItem = new JMenuItem("Open");
        JMenuItem saveItem = new JMenuItem("Save");
        JMenuItem saveAsItem = new JMenuItem("Save As");
        JMenuItem exitItem = new JMenuItem("Exit");

        // 添加菜单项到菜单栏
        menuBar.add(openItem);
        menuBar.add(saveItem);
        menuBar.add(saveAsItem);
        menuBar.add(exitItem);

        // 注册菜单项事件监听器
        openItem.addActionListener(new OpenActionListener());
        saveItem.addActionListener(new SaveActionListener());
        saveAsItem.addActionListener(new SaveAsActionListener());
        exitItem.addActionListener(new ExitActionListener());

        // 创建文本编辑区域
        textArea = new JTextArea();
        JScrollPane scrollPane = new JScrollPane(textArea);

        // 添加文本编辑区域到窗口
        Container contentPane = getContentPane();
        contentPane.add(scrollPane, BorderLayout.CENTER);

        // 创建文件选择器，用于打开和保存文件
        fileChooser = new JFileChooser();
        fileChooser.setFileFilter(new FileNameExtensionFilter("Text Files", "txt"));
    }

    // 打开文件事件监听器
    private class OpenActionListener implements ActionListener {
        @Override
        public void actionPerformed(ActionEvent e) {
            int result = fileChooser.showOpenDialog(TextEditor.this);
            if (result == JFileChooser.APPROVE_OPTION) {
                try {
                    currentFile = fileChooser.getSelectedFile();
                    byte[] bytes = Files.readAllBytes(Paths.get(currentFile.getPath()));
                    String content = new String(bytes);
                    textArea.setText(content);
                } catch (IOException ex) {
                    JOptionPane.showMessageDialog(TextEditor.this, "Failed to open file: " + ex.getMessage());
                }
            }
        }
    }

    // 保存文件事件监听器
    private class SaveActionListener implements ActionListener {
        @Override
        public void actionPerformed(ActionEvent e) {
            if (currentFile == null) {
                saveAs();
            } else {
                try {
                    String content = textArea.getText();
                    BufferedWriter writer = new BufferedWriter(new FileWriter(currentFile));
                    writer.write(content);
                    writer.close();
                } catch (IOException ex) {
                    JOptionPane.showMessageDialog(TextEditor.this, "Failed to save file: " + ex.getMessage());
                }
            }
        }
    }

    // 另存为事件监听器
    private class SaveAsActionListener implements ActionListener {
        @Override
        public void actionPerformed(ActionEvent e) {
            saveAs();
        }
    }

    // 退出事件监听器
    private class ExitActionListener implements ActionListener {
        @Override
        public void actionPerformed(ActionEvent e) {
            System.exit(0);
        }
    }

    // 另存为方法
    private void saveAs() {
        int result = fileChooser.showSaveDialog(TextEditor.this);
        if (result == JFileChooser.APPROVE_OPTION) {
            try {
                currentFile = fileChooser.getSelectedFile();
                String content = textArea.getText();
                BufferedWriter writer = new BufferedWriter(new FileWriter(currentFile));
                writer.write(content);
                writer.close();
            } catch (IOException ex) {
                JOptionPane.showMessageDialog(TextEditor.this, "Failed to save file: " + ex.getMessage());
            }
        }
    }

    public static void main(String[] args) {
        TextEditor editor = new TextEditor();
        editor.setVisible(true);
    }
}

这个文本编辑器具有打开、存盘、另存为、关闭等菜单，可以将文本存储到文件中。用户可以使用菜单或快捷键来执行这些操作。界面比较简单，只有一个文本编辑区域和一个菜单栏。用户可以在编辑区域输入文本，然后使用菜单或快捷键将文本存储到文件中。如果用户关闭窗口，程序将退出。