Check that holder is not null.

> I'm getting this runtime error report:

> root cause

> javax.servlet.ServletException
> 	at 
> org.apache.jasper.runtime.PageContextImpl.handlePageException(Unknown 
Source)
> 	at org.apache.jsp.timeClock_jsp._jspService(timeClock_jsp.java:186)

>   ServletContext srvcon = pageContext.getServletContext();
>   TimeCardHolder holder = (TimeCardHolder) srvcon.getAttribute
("timeHolder");
>   TimeCard card = holder.getTimeCard( "someId" );