<JSP:plugin>出错，请指教

plugin.jsp文件如下：
<%@   page   contentType= "text/html;charset=gb2312 "   %>
<jsp:plugin   type= "applet "   code= "TestApplet.class "   codeclass= "plugin/ "   with= "600 "   height= "400 ">
<jsp:params>
<jsp:param   name= "font "   value= "楷体_gb2312 "   />
</jsp:params>
<jsp:fallback> 您的IE不支持插件 </jsp:fallback>
</jsp:plugin>
文件目录是这样的E:\Tomcat\Tomcat   6.0\webapps\jsp\plugin.jsp,E:\Tomcat\Tomcat   6.0\webapps\jsp\plugin\TestApplet.class
我的APPLET的文件
import   java.applet.*;
import   java.awt.*;
public   class   TestApplet   extends   Applet
{
    String   strFont;
    public   void   init()
    {
          strFont=getParameter( "font ");
    }
    public   void   paint(Graphics   g)
    {
        Font   f=new   Font(strFont,Font.BOLD,30);
        g.setFont(f);
        g.setColor(Color.blue);
        g.drawSt