Cryptic JBoss error

After some weeks I tried to run JBoss again. I was welcomed with the following exception:

Failed to boot JBoss:
java.lang.RuntimeException: Unable to create a KernelInitializer based on the specified KernelConfig
at org.jboss.kernel.KernelFactory.createKernelInitializer(KernelFactory.java:156)
at org.jboss.kernel.KernelFactory.assembleNewKernel(KernelFactory.java:99)
at org.jboss.kernel.KernelFactory.newInstance(KernelFactory.java:67)
at org.jboss.kernel.plugins.bootstrap.AbstractBootstrap.bootstrap(AbstractBootstrap.java:114)
at org.jboss.kernel.plugins.bootstrap.AbstractBootstrap.run(AbstractBootstrap.java:83)
at org.jboss.bootstrap.microcontainer.ServerImpl.doStart(ServerImpl.java:79)
at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:398)
at org.jboss.Main.boot(Main.java:209)
at org.jboss.Main$1.run(Main.java:544)
at java.lang.Thread.run(libgcj.so.81)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
at org.jboss.reflect.plugins.MethodInfoImpl.<init>(MethodInfoImpl.java:103)
at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.<init>(ReflectMethodInfoImpl.java:78)
at org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactoryImpl$2.run(IntrospectionTypeInfoFactoryImpl.java:211)
at org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactoryImpl$2.run(IntrospectionTypeInfoFactoryImpl.java:200)
at java.security.AccessController.doPrivileged(libgcj.so.81)
at org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactoryImpl.getMethods(IntrospectionTypeInfoFactoryImpl.java:198)
at org.jboss.reflect.plugins.ClassInfoImpl.getDeclaredMethods(ClassInfoImpl.java:394)
at org.jboss.beans.info.plugins.AbstractBeanInfoFactory.getMethods(AbstractBeanInfoFactory.java:232)
at org.jboss.beans.info.plugins.AbstractBeanInfoFactory.getBeanInfo(AbstractBeanInfoFactory.java:153)
at org.jboss.beans.info.plugins.AbstractBeanInfoFactory.getBeanInfo(AbstractBeanInfoFactory.java:124)
at org.jboss.config.plugins.AbstractConfiguration.getBeanInfo(AbstractConfiguration.java:69)
at org.jboss.kernel.plugins.config.AbstractKernelConfig.getBeanInfo(AbstractKernelConfig.java:65)
at org.jboss.kernel.plugins.config.property.PropertyKernelConfig.getImplementation(PropertyKernelConfig.java:175)
at org.jboss.kernel.plugins.config.property.PropertyKernelConfig.createKernelInitializer(PropertyKernelConfig.java:120)
at org.jboss.kernel.KernelFactory.createKernelInitializer(KernelFactory.java:150)
...9 more

And I know it was working before! Suspected Java update 7 that came recently form Ubuntu repository, but no one else seemed to have a similar issue.

Somehow default java that system uses has been changed. It wasn’t sun-java any more. As soon as I ran:

sudo update-alternatives --config java

and choosed sun-java, it started working again.

Perhaps saves some time for someone.

Is that what Orkut meant by “You’ve got extraordinary tools to succeed, use them accordingly”? :P