如果单击两次，如何使JButton生成的文本在同一位置重新出现？

import javax.swing.JButton;
import javax.swing.JFrame;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class ButtonDemo {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Button Demo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JButton button = new JButton("Click me!");
        button.addMouseListener(new MouseAdapter() {
            int clickCount = 0;

            @Override
            public void mouseClicked(MouseEvent e) {
                clickCount++;
                if (clickCount == 2) {
                    String text = button.getText();
                    button.setText("");
                    button.setText(text);
                    clickCount = 0;
                }
            }
        });

        frame.getContentPane().add(button);
        frame.setSize(300, 200);
        frame.setVisible(true);
    }
}