Re: Unidentified subject! (Classnotfound db stuff)

[Kaolin Stockinger <k@metazoa.com>]

Okay, this may not be the canonical explanation, and I'm mildly in shock after
a very recent motorcycle accident, but....

Do you have something like the following recipe in your code?  if not, ya
need every bit of it.

Driver drv = (Driver)Class.forName(driverName).newInstance();
Connection conn =java.sql.DriverManager.getConnection(dbUrl,username,password);

What mystifies me is the need for the Driver line -- I don't understand how
creating a variable that doesn't seem to do anything whatsoever makes the
classloader a happy critter.  But without it, you definitely get errors like
the message below.

If that's *not* the problem, I'd be happy to hear what is.

--considerthisanofficialfooterbecauseIcan'trememberwhatI'msupposedtohavehere--
--althoughIcouldgolookinmyemailbacklogbutit'scorporatestandarduglyanywayso..--

On Tue, 3 Oct 2000, Ganesh Sundaram wrote:

> Hi all,
>      All test programs (like snoops and date programs) are executing well. 
> When I tried to make database connections, the ClassNotFoundExceptions is 
> thrown and the following error message is displayed.
> 
> 
>     Exception: java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver
> java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver
> 	at java.net.URLClassLoader$1.run(URLClassLoader.java:198)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:286)
> 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:282)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:243)
> 	at org.gjt.jsp.JspClassLoader.loadClass(JspClassLoader.java:51)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:243)
> 	at java.lang.Class.forName0(Native Method)
> 	at java.lang.Class.forName(Class.java:120)
> 	at jsp__data_2ejsp._jspService(jsp__data_2ejsp.java:56)
> 	at org.gjt.jsp.HttpJspPageImpl.service(HttpJspPageImpl.java:75)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:311)
> 	at org.gjt.jsp.JspServlet$Page.process(JspServlet.java:640)
> 	at org.gjt.jsp.JspServlet.service(JspServlet.java:284)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:311)
> 	at 
> org.apache.jserv.JServConnection.processRequest(JServConnection.java:317)
> 	at org.apache.jserv.JServConnection.run(JServConnection.java:188)
> 	at java.lang.Thread.run(Thread.java:475)
> 
> GNUJSP: Please report to Administrator. No JSP error page registered.
> =======================
> 
>           I am not able to proceed further because of it. Can anybody guide 
> me.
> 
> From,
> Ganesh.
> 
> 
> 
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