I am getting this error all-the-sudden and it appears to be related to this.
java.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:675)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:316)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:675)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:316)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at com.webobjects._bootstrap.WOBootstrap.main(WOBootstrap.java:84)
Obviously something's changed but I haven't changed my setup or installed any
new components/software. I have done WOLips updates. I did `file
WOBootstrap.class` and it returned "version 49.0 (Java 1.5)." It was the same
on the deployment machine. The JDK compliance in Eclipse is set to Java 1.5 on
my dev machine.
I've been banging my head against it and can't seem to figure what else I have
to do to get this to run - or why my compile products are different suddenly.
Tim Worman
UCLA GSE&IS
On Nov 11, 2009, at 8:36 PM, Mike Schrag wrote:
> For anyone who is getting an unexplained UnsupportedClassVersion error at
> startup -- unjar your WOBoostrap.jar and run file on the WOBoostrap.class.
> George Domurot and I just discovered that there is at least one
> WOBoostrap.jar floating around the intertubes that was built with 1.6 and has
> a 50.0 version number. Possibly this came from a Snow Leopard developer
> preview? This file comes from whatever machine performed your build and
> typically is found in
> /System/Library/WebObjects/JavaApplications/wotaskd.woa/WOBoostrap.jar
> (though the precise location is defined in your wolips.properties). I don't
> know how widespread that 1.6 build is, but if you've got it, this might save
> you a lot of insanity.
>
> ms
>
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