Error 500..JSP problem

[HASSAN,ZAID (Non-A-Australia,ex1)]

Hi friends,

I am trying to run the jsp examples under Tomcat 3.2.1 and i am geeting the
Error 500 which is shown below.Can anyone help me or give me any hint to
solve this. I have included the jasper.jar in my CLASSPATH too.

Thanks

Error: 500
Location: /examples/jsp/num/numguess.jsp
Internal Servlet Error:

javax.servlet.ServletException: sun/tools/javac/Main
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:399)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
        at org.apache.tomcat.core.Handler.service(Handler.java:286)
        at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper
Root cause: 

java.lang.NoClassDefFoundError: sun/tools/javac/Main
        at
org.apache.jasper.compiler.SunJavaCompiler.compile(SunJavaCompiler.java:128)
        at org.apache.jasper.compiler.Compiler.compile(Compiler.java:245)
        at
org.apache.jasper.servlet.JspServlet.doLoadJSP(JspServlet.java:462)
        at org.apache.jasper.servlet.JasperLoader12.loadJSP(JasperLoader12