JTextField:当文本太长时,如何在JTextField左侧设置文本

import javax.swing.*;
import java.awt.*;

public class JTextFieldExample {
  public static void main(String[] args) {
    JTextField textField = new JTextField();
    textField.setColumns(20);

    // 限制文本框中的文本长度为10行
    textField.setLineWrap(true);
    textField.setWrapStyleWord(true);
    textField.setMargin(new Insets(5, 5, 5, 5));

    // 在文本框左侧显示“更多”按钮
    JPanel morePanel = new JPanel();
    morePanel.setLayout(new BorderLayout());
    morePanel.add(new JLabel("更多"), BorderLayout.WEST);
    morePanel.add(textField, BorderLayout.CENTER);

    JScrollPane scrollPane = new JScrollPane(morePanel);
    scrollPane.setPreferredSize(new Dimension(400, 100));

    JOptionPane.showMessageDialog(null, scrollPane, "示例", JOptionPane.PLAIN_MESSAGE);
  }
}