JDK 1.6.0 u18 has a ClassCastException in 
ClassLoaderUtil.clearSunJarFileFactoryCache
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                 Key: OPENEJB-1131
                 URL: https://issues.apache.org/jira/browse/OPENEJB-1131
             Project: OpenEJB
          Issue Type: Bug
          Components: container system
    Affects Versions: 3.1.2, 3.1.3
         Environment: Sun JDK 1.6.0 u18. Reproduced on Ubuntu Linux 9.10 x86_64
            Reporter: Jonathan Gallimore
            Assignee: Jonathan Gallimore
            Priority: Minor
             Fix For: (trunk/openejb3)


I use OpenEJB for EJB Unit-Test and everything works fine. Today I changed
the Sun-JDK from version 1.6.0_17 to version 1.6.0_18. Everything works fine
anymore, but now during the container startup I get this exception:


INFO - Beginning load:
C:\development\tools\maven\repository\net\sourceforge\jexcelapi\jxl\2.6\jxl-2.6.jar
DEBUG - Destroying classLoader urlclassloa...@15628820
DEBUG - Destroying classLoaders for application
C:\development\tools\maven\repository\net\sourceforge\jexcelapi\jxl\2.6\jxl-2.6.jar
DEBUG - Releasing URLs for application
C:\development\tools\maven\repository\net\sourceforge\jexcelapi\jxl\2.6\jxl-2.6.jar
DEBUG - Clearing Sun JarFileFactory cache for directory
C:\development\tools\maven\repository\net\sourceforge\jexcelapi\jxl\2.6\jxl-2.6.jar
ERROR - Unable to clear Sun JarFileFactory cache
java.lang.ClassCastException: java.lang.String cannot be cast to
java.net.URL
       at
org.apache.openejb.ClassLoaderUtil.clearSunJarFileFactoryCache(ClassLoaderUtil.java:173)
       at
org.apache.openejb.ClassLoaderUtil.destroyClassLoader(ClassLoaderUtil.java:130)
       at
org.apache.openejb.ClassLoaderUtil.destroyClassLoader(ClassLoaderUtil.java:97)
       at
org.apache.openejb.config.DeploymentLoader.load(DeploymentLoader.java:185)
       at
org.apache.openejb.config.ConfigurationFactory.configureApplication(ConfigurationFactory.java:509)
       at
org.apache.openejb.config.ConfigurationFactory.getOpenEjbConfiguration(ConfigurationFactory.java:380)
       at
org.apache.openejb.assembler.classic.Assembler.getOpenEjbConfiguration(Assembler.java:292)
       at 
org.apache.openejb.assembler.classic.Assembler.build(Assembler.java:271)
       at org.apache.openejb.OpenEJB$Instance.<init>(OpenEJB.java:137)
       at org.apache.openejb.OpenEJB.init(OpenEJB.java:286)
       at org.apache.openejb.OpenEJB.init(OpenEJB.java:265)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
       at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at 
org.apache.openejb.loader.OpenEJBInstance.init(OpenEJBInstance.java:36)
       at
org.apache.openejb.client.LocalInitialContextFactory.init(LocalInitialContextFactory.java:71)
       at
org.apache.openejb.client.LocalInitialContextFactory.init(LocalInitialContextFactory.java:53)
       at
org.apache.openejb.client.LocalInitialContextFactory.getInitialContext(LocalInitialContextFactory.java:42)
       at 
javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667)
       at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)
       at javax.naming.InitialContext.init(InitialContext.java:223)
       at javax.naming.InitialContext.<init>(InitialContext.java:197)

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