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Posted to users@tomcat.apache.org by Bo Wang <bo...@home.com> on 2001/04/17 02:46:12 UTC

JDBC question

Hi, all,

I wrote a JDBC servlet follow an example from a servlet book, which calls an
MS Access database,  but when I run it, I got the following error message:
java.lang.NullPointerException
        at java.lang.ClassLoader.resolveClass0(Native Method)
        at java.lang.ClassLoader.resolveClass(ClassLoader.java:588)
        at
org.apache.tomcat.loader.AdaptiveClassLoader.loadClass(AdaptiveClassLoader.j
ava:430)
        at
org.apache.tomcat.loader.AdaptiveServletLoader.loadClass(AdaptiveServletLoad
er.java:174)
        at
org.apache.tomcat.core.ServletWrapper.loadServlet(ServletWrapper.java:265)
        at
org.apache.tomcat.core.ServletWrapper.init(ServletWrapper.java:289)
        at org.apache.tomcat.core.Handler.service(Handler.java:254)
        at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
        at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79
7)
        at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
        at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
onnectionHandler.java:210)
        at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
        at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
        at java.lang.Thread.run(Thread.java:484)

Does anybody has an idea what I did wrong?

Thanks in advance.

Bo