[jbosstools-issues] [JBoss JIRA] (JBIDE-17843) Connecting to a local JBoss AS process in JMX Navigator fails - java version

[Rob Stryker (JIRA)]

    [ https://issues.jboss.org/browse/JBIDE-17843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12983865#comment-12983865 ] 

Rob Stryker commented on JBIDE-17843:
-------------------------------------

https://github.com/jbosstools/jbosstools-server/pull/248 - PR
[~fbricon] - need a +1

> Connecting to a local JBoss AS process in JMX Navigator fails - java version
> ----------------------------------------------------------------------------
>
>                 Key: JBIDE-17843
>                 URL: https://issues.jboss.org/browse/JBIDE-17843
>             Project: Tools (JBoss Tools)
>          Issue Type: Bug
>          Components: jmx
>    Affects Versions: 4.2.0.Beta3
>         Environment: JBDS 8.0.0.Beta3 B172 running with java 8
> JBoss AS 7.1 running with java 6
> workspace default is java 8
>            Reporter: Martin Malina
>            Assignee: Rob Stryker
>            Priority: Critical
>              Labels: respin-a
>             Fix For: 4.2.0.Beta3
>
>
> I started a local JBoss AS 7.1 server and then tried to connect to the java process in JMX Navigator in Local Processes.
> When I tried to connect, I got this in the server log:
> {code}
> Exception in thread "Attach Listener" 10:13:20,404 ERROR [stderr] (Attach Listener) java.lang.UnsupportedClassVersionError: org/jboss/tools/jmx/jvmmonitor/internal/agent/Agent : Unsupported major.minor version 51.0
> 10:13:20,405 ERROR [stderr] (Attach Listener) 	at java.lang.ClassLoader.defineClass1(Native Method)
> 10:13:20,405 ERROR [stderr] (Attach Listener) 	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
> 10:13:20,405 ERROR [stderr] (Attach Listener) 	at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
> 10:13:20,406 ERROR [stderr] (Attach Listener) 	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
> 10:13:20,406 ERROR [stderr] (Attach Listener) 	at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
> 10:13:20,406 ERROR [stderr] (Attach Listener) 	at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
> 10:13:20,406 ERROR [stderr] (Attach Listener) 	at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
> 10:13:20,407 ERROR [stderr] (Attach Listener) 	at java.security.AccessController.doPrivileged(Native Method)
> 10:13:20,407 ERROR [stderr] (Attach Listener) 	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> 10:13:20,407 ERROR [stderr] (Attach Listener) 	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> 10:13:20,407 ERROR [stderr] (Attach Listener) 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> 10:13:20,408 ERROR [stderr] (Attach Listener) 	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> 10:13:20,408 ERROR [stderr] (Attach Listener) 	at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280)
> 10:13:20,408 ERROR [stderr] (Attach Listener) 	at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
> Agent failed to start!
> {code}
> Java version 51.0 indicates Java SE 7. This is probably because the AS is running with java 6, but the attached agent jar is built with java 7.



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