
thanks for reply, but i am getting this error pls help me its urgent type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825) org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758) org.apache.jsp.barjsp.jspService(bar_jsp.java:101) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
java.lang.ClassNotFoundException:
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Unknown Source)
org.jfree.data.jdbc.JDBCCategoryDataset.
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.

It seems that you haven't set the classpath properly.
Check whether mysql-connector-java-5.0.5.jar,jfreechart-1.0.13.jar and jcommon-1.0.16.jar are vthere in jdk lib and in the tomcat lib. If not, then put it inside both. Then go to the Start->Control Panel->System->System Properties->Advanced->Environment Variables. Inside this, create a variable classpath and set its value C:\apache-tomcat-6.0.16\lib.*;.
If the variable is already exists then add the value C:\apache-tomcat-6.0.16\lib.*;