Clientgen Exception - java.lang.VerifyError:Cannot inherit from final class

Question

When i create a client jar from webservice ear the ant taks fails with compiler errors, such as:
CreateProxy:
[clientgen] Generating client jar for earname.ear(WebServiceName_WS) ...
BUILD FAILED
java.lang.VerifyError: Cannot inherit from final class
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:480)
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:182)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:224)
at weblogic.webservice.server.WebServiceFactory.loadNonArrayClass(WebServiceFactory.java:1318)
at weblogic.webservice.server.WebServiceFactory.loadClass(WebServiceFactory.java:1293)
at weblogic.webservice.server.WebServiceFactory.initTypeMaps(WebServiceFactory.java:384)
at weblogic.webservice.server.WebServiceFactory.createFromMBean(WebServiceFactory.java:184)
at weblogic.webservice.tools.build.internal.WSDLGenImpl.getWebServiceRuntime(WSDLGenImpl.java:240)
at weblogic.webservice.tools.build.internal.WSDLGenImpl.run(WSDLGenImpl.java:135)
at weblogic.webservice.tools.build.internal.ClientGenImpl.doClientGenFromEAR(ClientGenImpl.java:438)
at weblogic.webservice.tools.build.internal.ClientGenImpl.run(ClientGenImpl.java:345)
at weblogic.ant.taskdefs.webservices.clientgen.ClientGenTask.doClientGen(ClientGenTask.java:351)
at weblogic.ant.taskdefs.webservices.clientgen.ClientGenTask.execute(ClientGenTask.java:208)
at org.apache.tools.ant.Task.perform(Task.java:341)
at org.apache.tools.ant.Target.execute(Target.java:309)
at org.apache.tools.ant.Target.performTasks(Target.java:336)
at org.apache.tools.ant.Project.executeTarget(Project.java:1339)
at org.apache.tools.ant.Project.executeTargets(Project.java:1255)
at org.apache.tools.ant.Main.runBuild(Main.java:609)
at org.apache.tools.ant.Main.start(Main.java:196)
at org.apache.tools.ant.Main.main(Main.java:235)
Total time: 25 seconds
This is a ant command:
<clientgen ear="${build}/earname.ear" onlyConvenienceMethod="true" warName="webservice.war" serviceName="WebServiceName_WS" packageName="my.package.webservices.generated" autotype="true" clientJar="${build.dist}/client/WebServiceName_WS.jar" overwrite="false" useServerTypes="true" keepGenerated="false" generateAsyncMethods="false" saveWsdl="true" j2me="false" useLowerCaseMethodNames="true" typePackageName="my.package.webservices.generated" usePortNameAsMethodName="false" />
My webservice do not include any final class.
I'm using WebLogic 8.1 SP4.Is there a solution for above problem?
Thanks.
Regards.

Answer 1

Hi all,
I m also facing quite similar problem.
I have one sample JMX program, which i want to collect data from weblogic 9.2.
but when i compile sample program on jdk 1.4 and run it on JDK 1.4 it throws following exception
java.lang.VerifyError: class weblogic.utils.classloaders.GenericCl
assLoader overrides final method .
ERROR 02/13 09:54:03 Stderr 700100 at java.lang.ClassLoader.defineClass0(Native Method)
ERROR 02/13 09:54:03 Stderr 700100 at java.lang.ClassLoader.defineClass(Unknown Source)
ERROR 02/13 09:54:03 Stderr 700100 at java.security.SecureClassLoader.defineClass(Unknown Source)
ERROR 02/13 09:54:03 Stderr 700100 at java.net.URLClassLoader.defineClass(Unknown Source)
ERROR 02/13 09:54:03 Stderr 700100 at java.net.URLClassLoader.access$100(Unknown Source)
ERROR 02/13 09:54:03 Stderr 700100 at java.net.URLClassLoader$1.run(Unknown Source)
ERROR 02/13 09:54:03 Stderr 700100 at java.security.AccessController.doPrivileged(Native Method)
ERROR 02/13 09:54:03 Stderr 700100 at java.net.URLClassLoader.findClass(Unknown Source)
ERROR 02/13 09:54:03 Stderr 700100 at java.lang.ClassLoader.loadClass(Unknown Source)
ERROR 02/13 09:54:03 Stderr 700100 at java.lang.ClassLoader.loadClass(Unknown Source)
but sample program works fine if i run it on JDK 1.5..
can someone tell me...wats reason?
Thanks
Nihil