下列JApplet对鼠标单击事件进行处理，当鼠标在JPanel中单击时，在JLabel中显示单击次数。请在横线处填写正确的代码 【15】 。
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
public class Test extends JApplet

static int cnt;
public void init()

Container cp = getContentPane();
MyPane jp = new MyPanel();
______;
jp.addMouseListener(new MouseAdapter()

public void mouseClicked(MouseEvent me)

cnt ++;
jb.setText(Integer.toString(cnt));

);
cp.add("South",jB) ;
cp.add("Center",jp);


class MuPanel extends JPanel

public MyPanel()

public void paintComponentGraphics g)

super.panitComponent(g);
g.drawRect(0,O,getSize() .width-1,getSize() .hight-1);

注射模由什么结构组成？