Java EE (Java Enterprise Edition) General Discussion

I got following exception on my code :

when setting value <c:set value="${imageDir}"/> in JSP

Virtual Machine: BEA WebLogic JRockit(TM) 1.4.2_03 JVM , 1.4.2_03 Servlet Engine : Apache Tomcat/5.0.30App server : JBoss 3.2.7


2005-07-27 17:11:36,920 ERROR [com.mycompany.jsp] java.lang.ClassCastException: [Ljavax.servlet.jsp.tagext.Tag;
at org.apache.catalina.core.ApplicationHttpResponse.addDateHeader(Ljava.lang.String;J)V(ApplicationHttpResponse.java:200)
at org.apache.jsp.jsp.console.spView_jsp._jspx_meth_c_set_0(Ljavax.servlet.jsp.PageContext;)Z(spView_jsp.java:373)
at org.apache.jsp.jsp.console.spView_jsp._jspService(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(spView_jsp.java:90)
at org.apache.jasper.runtime.HttpJspBase.service(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;)V(HttpServlet.java:810)
at org.apache.jasper.servlet.JspServletWrapper.service(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;Z)V(JspServletWrapper.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;Ljava.lang.String;Ljava.lang.Throwable;Z)V(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(JspServlet.java:236)
at javax.servlet.http.HttpServlet.service(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;)V(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;)V(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;)V(ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;Ljavax.servlet.FilterChain;)V(ReplyHeaderFilter.java:75)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;)V(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;)V(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;Lorg.apache.catalina.ValveContext;)V(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;)V(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;)V(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(Lorg.apache.catalina.Wrapper;Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;)V(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;Lorg.apache.catalina.ValveContext;)V(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;)V(StandardValveContext.java:104)
at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;Lorg.apache.catalina.ValveContext;)V(CustomPrincipalValve.java:66)
at org.apache.catalina.core.StandardValveContext.invokeNext(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;)V(StandardValveContext.java:102)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;Lorg.apache.catalina.ValveContext;)V(SecurityAssociationValve.java:162)
at org.apache.catalina.core.StandardValveContext.invokeNext(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;)V(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;)V(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;Lorg.apache.catalina.ValveContext;)V(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;)V(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;Lorg.apache.catalina.ValveContext;)V(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;)V(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;)V(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;Lorg.apache.catalina.ValveContext;)V(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(Lorg.apache.catalina.Request;Lorg.apache.catalina.Response;)V(StandardValveContext.java:104)

jspxmeth_c_set_0
------------------

private boolean jspxmeth_c_set_0(PageContext jspxpage_context)
throws Throwable {
PageContext pageContext = jspxpage_context;
JspWriter out = jspxpage_context.getOut();
// c:set
org.apache.taglibs.standard.tag.rt.core.SetTag jspxth_c_set_0 = (org.apache.taglibs.standard.tag.rt.core.SetTag) jspxtagPool_c_set_var_value_nobody.get(org.apache.taglibs.standard.tag.rt.core.SetTag.class);// Error Here, I think -sen
jspxth_c_set_0.setPageContext(_jspx_page_context);
jspxth_c_set_0.setParent(null);
jspxth_c_set_0.setVar("imageDir");
jspxth_c_set_0.setValue((java.lang.Object) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${pageContext.request.contextPath}${imageDir}", java.lang.Object.class, (PageContext)_jspx_page_context, null, false));
int jspxeval_c_set_0 = jspxth_c_set_0.doStartTag();
if (_jspx_th_c_set_0.doEndTag() == javax.servlet.jsp.tagext.Tag.SKIP_PAGE)
return true;
jspxtagPool_c_set_var_value_nobody.reuse(_jspx_th_c_set_0);
return false;
}


Can you please help me the reason for the exception !?
What is the need to call addDateHeader in org.apache.catalina.core.ApplicationHttpResponse class !?

Regds
Sen