[Jetty-support] StdErrLog can't find DateCache in same jar

[Chris H. <hi...@my...>]

I try to start my app (which uses jetty and a bunch of other open source 
libraries) and I get this exception:

Exception in thread "main" java.lang.NoSuchMethodError: 
org.mortbay.util.DateCache.now()Ljava/lang/String;
         at org.mortbay.log.StdErrLog.info(StdErrLog.java:67)
         at org.mortbay.log.Log.<clinit>(Log.java:63)
         at org.mortbay.component.Container.add(Container.java:200)
         at org.mortbay.component.Container.update(Container.java:164)
         at org.mortbay.component.Container.update(Container.java:106)
         at org.mortbay.jetty.Server.setConnectors(Server.java:158)
         at org.mortbay.jetty.Server.<init>(Server.java:85)
         at 
net.commerce.zocalo.JspSupport.ServletUtil.createServerWithListener(ServletUtil.java:43)
         at 
net.commerce.zocalo.JspSupport.ServletUtil.initializeServerTopLevel(ServletUtil.java:98)
         at 
net.commerce.zocalo.gmu_experiment.ExperimentServer.<init>(ExperimentServer.java:30)
         at 
net.commerce.zocalo.gmu_experiment.ExperimentServer.main(ExperimentServer.java:35)

I don't understand what could cause this.  StdErrLog and DateCache are 
both in jetty-util-6.1.5.jar, and when I look at the source code, it 
seems clear that StdErrLog calls the public, no-arg version of 
DateCache.now() that returns a String.  I've tried swapping in a new 
version of the jetty-util jar (6.1.7 vs. 6.1.5) and that doesn't change 
the behavior at all.

I've run the same release of my code on other platforms, and the JVM 
version is close enough that that difference seems unlikely to be a 
source of trouble.  (1.5.0_12 vs. 1.5.0_13).  The problem occurs on a 
linux machine, hosted by rimuhosting.com.

I have run my application many times on several platforms (mac, windows, 
and linux) with no trouble.  I don't think there's anything different 
about the way the code is invoking error logging, and even if there 
were, I don't see how that could cause an error like this.

I've checked all the jar files that I'm loading to ensure that there 
aren't any other versions of DateCache or StdErrLog being loaded.

Can anyone suggest something else I should look at or try?
Thanks,
Chris


OS release:

Linux
Linux  2.6.18-xenU-rimu-20061214
  i686


java version "1.5.0_12"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_12-b04)
Java HotSpot(TM) Client VM (build 1.5.0_12-b04, mixed mode, sharing)


-- 
It is easy to turn an aquarium into fish soup, but not so
easy to turn fish soup back into an aquarium.
-- Lech Walesa on reverting to a market economy.

Chris Hibbert
hi...@my...
http://mydruthers.com