对JTextArea中的文本进行排序

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class TextAreaSortExample extends JFrame {
    private JTextArea textArea;
    private JButton sortButton;

    public TextAreaSortExample() {
        initializeUI();
    }

    private void initializeUI() {
        setSize(400, 300);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        textArea = new JTextArea();
        sortButton = new JButton("Sort");

        sortButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                String text = textArea.getText();
                String[] lines = text.split("\n");
                List<String> lineList = Arrays.asList(lines);

                Collections.sort(lineList);

                StringBuilder sortedText = new StringBuilder();
                for (String line : lineList) {
                    sortedText.append(line).append("\n");
                }

                textArea.setText(sortedText.toString());
            }
        });

        getContentPane().add(new JScrollPane(textArea));
        getContentPane().add(sortButton, "South");
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new TextAreaSortExample().setVisible(true);
            }
        });
    }
}