I thought I'd take a look at IBM's Java 8 beta multitenancy support. This is a mechanism for sharing runtime resources across Java virtual machine instances. See developerWorks' "Introduction to Java multitenancy."
I installed ibm-java-sdk-ea-8.0-0.0-x86_64-archive3.bin
on Linux using a CentOS-6.4-x86_64-LiveCD.iso
based host.