大家来帮我看看这个画图板一部分

Question

我在做一个画图板，界面已经做好了，两个Panel面板，一个在用户界面中，另一个用于画板，只是对于鼠标画画这一个功能实现不了，就是在鼠标事件上糊涂，大家帮我看看鼠标事件那块，zhixian那部分就行，给我说说该怎么写。这是我绘画部分的代码class myDemo extends 绘制图形{ Panel p1=new Panel(); private String brush = "free"; Color selectColor=Color.black; Canvas drawArea=new Canvas(); private void myEvent(){zhixian2.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e) { if(zhixian2==e.getSource()){ brush="line"; } } }); zhixian2.addMouseListener(new MouseAdapter(){  public void mousePressed(MouseEvent e){  x=e.getX();  y=e.getY();    } }); zhixian2.addMouseListener(new MouseAdapter(){  public void  mouseReleased(MouseEvent e){  int x1=e.getX();  int y1=e.getY();  Graphics2D g=(Graphics2D) zhixian2.getGraphics();  g.drawLine(x,y,x1,y1);    } }); kongtuo2.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent e) { if(kongtuo2==e.getSource()){ brush = "circ"; } }}); kongtuo2.addMouseListener(new MouseAdapter(){  public void mousePressed(MouseEvent e){  x=e.getX();  y=e.getY();    } });} }