Java Swing - 如何強(qiáng)制圖像留在JTextArea

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import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextArea;
public class Main{
  public static void main(String[] args) {
    JFrame f = new JFrame();
    MyTextArea txt = new MyTextArea();
    f.getContentPane().add(txt);
    f.getContentPane().add(new JButton("OK"), BorderLayout.SOUTH);
    f.pack();
    f.setVisible(true);
 }
} 
class MyTextArea extends JTextArea implements MouseListener {
   private Image myImage;
   public MyTextArea() {
      addMouseListener(this);
   }
   public void addImage(Image image) {
      this.myImage = image;
      invalidate();
      repaint();
   }
 
 
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