OpenAIってたまに見るけどなにものなの？

import javax.swing.; import java.awt.;
import java.awt.event.; import java.io.;

public class MemoApp {
private JFrame frame;
private JTextArea textArea;
private JButton saveButton;
private JButton loadButton;
private JButton clearButton;
private JFileChooser fileChooser;

public static void main(String[] args) {
    SwingUtilities.invokeLater(() -> new MemoApp().initialize());
}

public void initialize() {
    frame = new JFrame("Memo App");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(400, 400);

    // Text area for memo input
    textArea = new JTextArea();
    textArea.setFont(new Font("Arial", Font.PLAIN, 16));
    JScrollPane scrollPane = new JScrollPane(textArea);

    // Buttons
    saveButton = new JButton("Save");
    loadButton = new JButton("Load");
    clearButton = new JButton("Clear");

    // Add action listeners to buttons
    saveButton.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            saveMemo();
        }
    });

    loadButton.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            loadMemo();
        }
    });

    clearButton.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            clearMemo();
        }
    });

    // Layout
    JPanel buttonPanel = new JPanel();
    buttonPanel.setLayout(new FlowLayout());
    buttonPanel.add(saveButton);
    buttonPanel.add(loadButton);
    buttonPanel.add(clearButton);

    frame.getContentPane().setLayout(new BorderLayout());
    frame.getContentPane().add(scrollPane, BorderLayout.CENTER);
    frame.getContentPane().add(buttonPanel, BorderLayout.SOUTH);

    fileChooser = new JFileChooser();

    frame.setVisible(true);
}

// Method to save memo to file
private void saveMemo() {
    int returnValue = fileChooser.showSaveDialog(frame);
    if (returnValue == JFileChooser.APPROVE_OPTION) {
        File file = fileChooser.getSelectedFile();
        try (BufferedWriter writer = new BufferedWriter(new FileWriter(file))) {
            writer.write(textArea.getText());
            JOptionPane.showMessageDialog(frame, "Memo saved successfully!");
        } catch (IOException e) {
            JOptionPane.showMessageDialog(frame, "Error saving memo!");
        }
    }
}

// Method to load memo from file
private void loadMemo() {
    int returnValue = fileChooser.showOpenDialog(frame);
    if (returnValue == JFileChooser.APPROVE_OPTION) {
        File file = fileChooser.getSelectedFile();
        try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
            StringBuilder content = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                content.append(line).append("\n");
            }
            textArea.setText(content.toString());
            JOptionPane.showMessageDialog(frame, "Memo loaded successfully!");
        } catch (IOException e) {
            JOptionPane.showMessageDialog(frame, "Error loading memo!");
        }
    }
}

// Method to clear the text area
private void clearMemo() {
    textArea.setText("");
}
}