4:49 p.m.
[
https://issues.jboss.org/browse/WFLY-3068?page=com.atlassian.jira.plugin....
]
Eduardo Silva commented on WFLY-3068:
-------------------------------------
This is a common error that happens when you try to load/run classes with a previous
runtime version. This is an known issue that is easy to figure out what you are doing
wrong.
Anyway, PluggableMBeanServerBuilder belongs to the WildFly Core. (WFCORE)
could fail more gracefully when wrong Java version used
-------------------------------------------------------
Key: WFLY-3068
URL: https://issues.jboss.org/browse/WFLY-3068
Project: WildFly
Issue Type: Bug
Components: Class Loading, Server
Affects Versions: 8.0.0.Final
Environment: Java version < 7
Reporter: dpocock
Priority: Minor
If I try to start Wildfly with Java 6 (which is no longer support of course) it just
fails with a stack:
09:51:00,536 INFO [org.jboss.modules] (main) JBoss Modules version 1.3.0.Final
09:51:00,543 WARN [org.jboss.modules] (main) Failed to define class
org.jboss.as.jmx.PluggableMBeanServerBuilder in Module "org.jboss.as.jmx:main"
from local module loader @36b60b93 (finder: local module finder @69b1fbf4 ()):
java.lang.UnsupportedClassVersionError: org/jboss/as/jmx/PluggableMBeanServerBuilder :
Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method) [rt.jar:1.6.0_26]
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) [rt.jar:1.6.0_26]
at java.lang.ClassLoader.defineClass(ClassLoader.java:615) [rt.jar:1.6.0_26]
at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:345)
[jboss-modules.jar:1.3.0.Final]
at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:423)
[jboss-modules.jar:1.3.0.Final]
at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:261)
[jboss-modules.jar:1.3.0.Final]
at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:76)
[jboss-modules.jar:1.3.0.Final]
at org.jboss.modules.Module.loadModuleClass(Module.java:548)
[jboss-modules.jar:1.3.0.Final]
at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:189)
[jboss-modules.jar:1.3.0.Final]
at
org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:443)
[jboss-modules.jar:1.3.0.Final]
at
org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:431)
[jboss-modules.jar:1.3.0.Final]
at
org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:373)
[jboss-modules.jar:1.3.0.Final]
at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:118)
[jboss-modules.jar:1.3.0.Final]
at javax.management.MBeanServerFactory.loadBuilderClass(MBeanServerFactory.java:423)
[rt.jar:1.6.0_26]
at
javax.management.MBeanServerFactory.checkMBeanServerBuilder(MBeanServerFactory.java:465)
[rt.jar:1.6.0_26]
at
javax.management.MBeanServerFactory.getNewMBeanServerBuilder(MBeanServerFactory.java:511)
[rt.jar:1.6.0_26]
at javax.management.MBeanServerFactory.newMBeanServer(MBeanServerFactory.java:298)
[rt.jar:1.6.0_26]
at javax.management.MBeanServerFactory.createMBeanServer(MBeanServerFactory.java:213)
[rt.jar:1.6.0_26]
at javax.management.MBeanServerFactory.createMBeanServer(MBeanServerFactory.java:174)
[rt.jar:1.6.0_26]
at
sun.management.ManagementFactory.createPlatformMBeanServer(ManagementFactory.java:302)
[rt.jar:1.6.0_26]
at
java.lang.management.ManagementFactory.getPlatformMBeanServer(ManagementFactory.java:504)
[rt.jar:1.6.0_26]
at org.jboss.modules.Main.main(Main.java:449) [jboss-modules.jar:1.3.0.Final]
Exception in thread "main" java.lang.UnsupportedClassVersionError:
org/jboss/as/jmx/PluggableMBeanServerBuilder : 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.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:345)
at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:423)
at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:261)
at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:76)
at org.jboss.modules.Module.loadModuleClass(Module.java:548)
at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:189)
at
org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:443)
at
org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:431)
at
org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:373)
at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:118)
at javax.management.MBeanServerFactory.loadBuilderClass(MBeanServerFactory.java:423)
at
javax.management.MBeanServerFactory.checkMBeanServerBuilder(MBeanServerFactory.java:465)
at
javax.management.MBeanServerFactory.getNewMBeanServerBuilder(MBeanServerFactory.java:511)
at javax.management.MBeanServerFactory.newMBeanServer(MBeanServerFactory.java:298)
at javax.management.MBeanServerFactory.createMBeanServer(MBeanServerFactory.java:213)
at javax.management.MBeanServerFactory.createMBeanServer(MBeanServerFactory.java:174)
at
sun.management.ManagementFactory.createPlatformMBeanServer(ManagementFactory.java:302)
at
java.lang.management.ManagementFactory.getPlatformMBeanServer(ManagementFactory.java:504)
at org.jboss.modules.Main.main(Main.java:449)
It would be more friendly if it checked the Java version in the main() function and
stopped gracefully. The stack trace is not hard to understand but may not be obvious to
everybody.
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Eduardo Silva (JIRA)