Stacktrace of Error Encountered @ Weblogic 12c, JDK 1.7, Eclipse 2.6.0

ErrorLog.java

####<Apr 6, 2015 7:42:25 PM SGT> <Error> <Class Loaders> <ISPS-APP> <AdminServer> <[STANDBY] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1428320545119> <BEA-2162500> <Class, org.eclipse.persistence.internal.indirection.jdk8.IndirectCollectionsProvider, was compiled with an incompatible version of Java. Make sure that all the classes needed by the application have been compiled with a compatible java version. java.lang.UnsupportedClassVersionError: org/eclipse/persistence/internal/indirection/jdk8/IndirectCollectionsProvider : Unsupported major.minor version 52.0
java.lang.UnsupportedClassVersionError: org/eclipse/persistence/internal/indirection/jdk8/IndirectCollectionsProvider : Unsupported major.minor version 52.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at weblogic.utils.classloaders.GenericClassLoader.defineClass(GenericClassLoader.java:412)
	at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:366)
	at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:318)
	at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:80)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
	at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:186)
	at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:50)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:270)
	at org.eclipse.persistence.internal.security.PrivilegedAccessHelper.getClassForName(PrivilegedAccessHelper.java:139)
	at org.eclipse.persistence.indirection.IndirectCollectionsFactory.getProvider(IndirectCollectionsFactory.java:202)
	at org.eclipse.persistence.indirection.IndirectCollectionsFactory.<clinit>(IndirectCollectionsFactory.java:41)
	at org.eclipse.persistence.internal.helper.ClassConstants.<clinit>(ClassConstants.java:64)
	at org.eclipse.persistence.internal.identitymaps.AbstractIdentityMap.getDefaultIdentityMapClass(AbstractIdentityMap.java:339)
	at org.eclipse.persistence.sessions.Project.<init>(Project.java:109)
	at org.eclipse.persistence.jaxb.compiler.MappingsGenerator.generateProject(MappingsGenerator.java:229)
	at org.eclipse.persistence.jaxb.compiler.Generator.generateProject(Generator.java:184)
	at org.eclipse.persistence.jaxb.JAXBContext$TypeMappingInfoInput.createContextState(JAXBContext.java:1108)
	at org.eclipse.persistence.jaxb.JAXBContext$TypeMappingInfoInput.createContextState(JAXBContext.java:1100)
	at org.eclipse.persistence.jaxb.JAXBContext.<init>(JAXBContext.java:189)
	at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:165)
	at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:152)
	at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:112)
	at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:102)