ejb3trail persistence error

[mishelangelo]

whenever i try running jsp files that use session beans to access and retrieve persistent (o/r) entities, i get exceptions usu with root cause: NullPointerException on the line where the an entity should have been initialized from a method call to a session bean.

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: Exception in JSP: /persistence/entitymanager/addfund.jsp:45

42:
43: <%
44: // Collection <Fund> funds = cal.getFunds();
45: Collection funds = cal.getFunds();
46: %>
47:
48: There are <b><%=funds.size()%></b> funds in the database.<br/>


Stacktrace:
 org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:504)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

root cause

java.lang.NullPointerException
 org.apache.jsp.persistence.entitymanager.addfund_jsp._jspService(addfund_jsp.java:89)
 org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

I dont see anything wrong with

45: Collection funds = cal.getFunds();

in and of itself.... but what do i know.... :)
Does anyone have any idea why? I'm kinda like a total j2ee newbie

[gavin.king]

Don't use scriptlets. Use JSF.