Can you please tell me if JBoss 5.1.0 community/enterprise edition is certified to run on Java 8 run-time?
No, JBoss 5.x is not certified to run with JDK 8.
If you want to run JBoss on JDK8 then you should upgrade to WildFly or For the JBoss EAP6 the JDK 1.8 ** support only with 6.3.3 update and above. See: https://access.redhat.com/articles/111663
The First release of WildFly was tested against JDK8 is WildFly 8.
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