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From Krzysztof Sobkowiak <krzys.sobkow...@gmail.com>
Subject Re: Java 6 support broken in Karaf 3.0.x
Date Wed, 06 Jul 2016 22:37:31 GMT
This problem happens since 3.0.6.

On 06.07.2016 23:20, Krzysztof Sobkowiak wrote:
> Hi
>
> According to http://karaf.apache.org/download.html Karaf 3.0.x supports Java 6. I tried
to start it with 1.6.0_45 and got following error while starting the container
>
> java.lang.UnsupportedClassVersionError: org/apache/felix/fileinstall/internal/FileInstall
: Unsupported major.minor version 51.0
>     at java.lang.ClassLoader.defineClass1(Native Method)
>     at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
>     at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
>     at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.findClass(BundleWiringImpl.java:2279)
>     at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1501)
>     at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:75)
>     at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1955)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
>     at org.apache.felix.framework.BundleWiringImpl.getClassByDelegation(BundleWiringImpl.java:1374)
>     at org.apache.felix.framework.Felix.createBundleActivator(Felix.java:4329)
>     at org.apache.felix.framework.Felix.activateBundle(Felix.java:2141)
>     at org.apache.felix.framework.Felix.startBundle(Felix.java:2064)
>     at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1291)
>     at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:304)
>     at java.lang.Thread.run(Thread.java:662)
> [FelixStartLevel] ERROR org.apache.aries.blueprint.container.BlueprintContainerImpl -
Unable to start blueprint container for bundle org.apache.aries.blueprint.cm/1.0.8
> java.lang.NoClassDefFoundError: java/lang/AutoCloseable
>     at java.lang.ClassLoader.defineClass1(Native Method)
>     at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
>     at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
>     at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.findClass(BundleWiringImpl.java:2279)
>     at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1501)
>     at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:75)
>     at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1955)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
>     at org.apache.aries.blueprint.namespace.NamespaceHandlerRegistryImpl$NamespaceHandlerSetImpl.createSchema(NamespaceHandlerRegistryImpl.java:603)
>     at org.apache.aries.blueprint.namespace.NamespaceHandlerRegistryImpl$NamespaceHandlerSetImpl.doGetSchema(NamespaceHandlerRegistryImpl.java:458)
>     at org.apache.aries.blueprint.namespace.NamespaceHandlerRegistryImpl$NamespaceHandlerSetImpl.getSchema(NamespaceHandlerRegistryImpl.java:443)
>     at org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:343)
>     at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:276)
>     at org.apache.aries.blueprint.container.BlueprintExtender.createContainer(BlueprintExtender.java:300)
>     at org.apache.aries.blueprint.container.BlueprintExtender.createContainer(BlueprintExtender.java:269)
>     at org.apache.aries.blueprint.container.BlueprintExtender.createContainer(BlueprintExtender.java:265)
>     at org.apache.aries.blueprint.container.BlueprintExtender.modifiedBundle(BlueprintExtender.java:255)
>     at org.apache.aries.blueprint.container.BlueprintExtender.addingBundle(BlueprintExtender.java:218)
>     at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.customizerAdding(BundleHookBundleTracker.java:487)
>     at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.customizerAdding(BundleHookBundleTracker.java:433)
>     at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$AbstractTracked.trackAdding(BundleHookBundleTracker.java:749)
>     at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$AbstractTracked.trackInitial(BundleHookBundleTracker.java:674)
>     at org.apache.aries.util.tracker.hook.BundleHookBundleTracker.open(BundleHookBundleTracker.java:159)
>     at org.apache.aries.util.tracker.RecursiveBundleTracker.open(RecursiveBundleTracker.java:106)
>     at org.apache.aries.blueprint.container.BlueprintExtender$2.serviceFound(BlueprintExtender.java:119)
>     at org.apache.aries.util.tracker.SingleServiceTracker.update(SingleServiceTracker.java:174)
>     at org.apache.aries.util.tracker.SingleServiceTracker.findMatchingReference(SingleServiceTracker.java:132)
>     at org.apache.aries.util.tracker.SingleServiceTracker.open(SingleServiceTracker.java:100)
>     at org.apache.aries.blueprint.container.BlueprintExtender.start(BlueprintExtender.java:137)
>     at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:645)
>     at org.apache.felix.framework.Felix.activateBundle(Felix.java:2146)
>     at org.apache.felix.framework.Felix.startBundle(Felix.java:2064)
>     at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1291)
>     at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:304)
>     at java.lang.Thread.run(Thread.java:662)
> Caused by: java.lang.ClassNotFoundException: java.lang.AutoCloseable
>     at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>     at java.security.AccessController.doPrivileged(Native Method)
>     at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
>     at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1460)
>     at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:75)
>     at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1955)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
>     ... 35 more
>
> AutoCloseable has been introduced in Java 7.
>
> I'm getting similar problems while starting ServiceMix
>
>  19% [=============>                                                          ]ERROR:
Bundle org.apache.felix.fileinstall [7] Error starting mvn:org.apache.felix/org.apache.felix.fileinstall/3.5.2
(org.osgi.framework.BundleException: Activator start error in bundle org.apache.felix.fileinstall
[7].)
> java.lang.UnsupportedClassVersionError: org/apache/felix/fileinstall/internal/FileInstall
: Unsupported major.minor version 51.0
>     at java.lang.ClassLoader.defineClass1(Native Method)
>     at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
>     at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
>
>
> 38% [===========================>                                            ][FelixStartLevel]
ERROR org.apache.aries.blueprint.container.BlueprintContainerImpl - Unable to start blueprint
container for bundle org.apache.karaf.deployer.spring/3.0.6
> java.lang.UnsupportedClassVersionError: org/apache/felix/fileinstall/ArtifactUrlTransformer
: Unsupported major.minor version 51.0
>     at java.lang.ClassLoader.defineClass1(Native Method)
>     at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
>     at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
>     at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.findClass(BundleWiringImpl.java:2279)
>     at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1501)
>     at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:75)
>     at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1955)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
>     at org.apache.felix.framework.BundleWiringImpl.getClassByDelegation(BundleWiringImpl.java:1374)
>
>
> Caused by: java.lang.ClassNotFoundException: java.util.concurrent.ConcurrentLinkedDeque
>     at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>     at java.security.AccessController.doPrivileged(Native Method)
>     at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
>     at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1460)
>
>
> ConcurrentLinkedDeque introduced in Java 7.
>
> I think Karaf 3.0.x no more supports Java 6 and we should remove this iformation from
the schedule matrix and update the supported target/source in pom.
>
> Kindly regards
> Krzysztof
>

-- 
Krzysztof Sobkowiak (@ksobkowiak)

JEE & OSS Architect, Integration Architect
Apache Software Foundation Member (http://apache.org/)
Apache ServiceMix Committer & PMC Member (http://servicemix.apache.org/)
Senior Solution Architect @ Capgemini SSC (http://www.capgeminisoftware.pl/)

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