Applet ClassNotFoundException - 相对路径？

Question

我用它在Gadgets.jsp

中显示applet

<applet codebase="../../WEB-INF/classes" code="Gadgets/calculator.class" width="200" height="280">
If your browser was Java-enabled, a Calculator would appear here.
</applet>

但是它显示了一个ClassNotFoundException ...
我也试过

<applet codebase="../WEB-INF/classes" code="Gadgets/calculator.class" width="200" height="280">
If your browser was Java-enabled, a Calculator would appear here.
</applet>

但它仍然显示ClassNotFoundException ...
这是我的文件夹结构：
web - 查看 - Gadgets.jsp

• 网络
• • 查看
• • • Gadgets.jsp
• • WEB-INF
• • • 类
• • • • 小工具
• • • • • calculator.class

codebase的正确相对路径是什么？