/rpc/RemoteService : Unsupported major.minor version 51.0

Hi all,

Trying to migrate to 2.8 from 2.7. Resolved all the build issues and successfully done. When I deploy my war into weblogic getting folloing error. 

I verified gwt-servlet jar is in war\WEB-INF\lib\gwt-servlet-2.8.0.jar

Any idea what might cause this issue ?

appreciate your help.

<Jan 1, 2017 2:32:32 AM EST> <Warning> <HTTP> <BEA-101162> <User defined listener weblogic.wsee.deploy.ServletDeployListener failed: java.lang.NoClassDefFoundError: com/google/gwt/user/client/rpc/RemoteService.

java.lang.NoClassDefFoundError: com/google/gwt/user/client/rpc/RemoteService

        at java.lang.ClassLoader.defineClass1(Native Method)

        at java.lang.ClassLoader.defineClass(ClassLoader.java:616)

        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)

        at weblogic.utils.classloaders.GenericClassLoader.defineClass(GenericClassLoader.java:344)

        at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:301)

        Truncated. see log file for complete stacktrace

Caused By: java.lang.ClassNotFoundException: Class bytes found but defineClass()failed for: 'com.google.gwt.user.client.rpc.RemoteService'

        at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:275)

        at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:56)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:303)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)

        at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:177)

        Truncated. see log file for complete stacktrace

Caused By: java.lang.UnsupportedClassVersionError: com/google/gwt/user/client/rpc/RemoteService : Unsupported major.minor version 51.0

        at java.lang.ClassLoader.defineClass1(Native Method)

        at java.lang.ClassLoader.defineClass(ClassLoader.java:616)

        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)

        at weblogic.utils.classloaders.GenericClassLoader.defineClass(GenericClassLoader.java:344)

        at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:301)

        Truncated. see log file for complete stacktrace

>

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