From the JBoss Wiki :
Starting with version 6.0.0.CR1, Infinispan has replaced JBoss Cache as the distributed caching technology on which the clustered JBoss AS services are built.
Now itβs possible that you can pack the downloaded copy of JBossCache 1.4 (this is the version that comes with JBossAS 4.2) inside your application and deploy it on JBossAS 6.x, but I suspect that this is unlikely to work - JBossCache 1.4 relies on some old libraries JBoss.
I think you will have to reorganize your code to work with Infinispan , not JBossCache, if you want to upgrade from AS 4.2 to 6.x.
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