This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Hi again all, here's my latest challenge... While trying to run a report (using Jasper reports) on my new server I am getting a NoClassDefFoundError thrown by sun.misc.Unsafe.ensureClassInitialized(). I have included a full stack trace below, but it looks like the de-serializer is not finding one of the classes that was serialized when compiling the report. So far so good. The problem I have is that the exception has no message, and therefore I have no way of knowing which class it cannot find. I have checked the javadoc for NoClassDefFoundError and it seems that there are no other methods that might provide the information about which class (which seems a strange ommission - you would have thought there would be a "getUnfoundClassName" method or something). Does anyone have any suggestions on how I can track down the missing class ? Please respond, even if only to say "no idea mate, sorry!". Cheers Steve
I am wondering if there is a DLL that it is looking for. Bill
Joined: Sep 24, 2003
Not a bad suggestion, except that it's running on a Linux system. I had a problem the other day because the X-Window libraries weren't installed, and that reported a problem in a different native method. It was a "library not found" error rather than a "class not found" error though. The other issue is that, even if it is a missing library, I have no way to know which one is missing.