Actually, there's a few Java VMs that are made to start nearly instantly or have an option for a quick startup. For example, [1] shows that the IBM J9 VM has a

Actually, there's a few Java VMs that are made to start nearly instantly or have an option for a quick startup. For example, [1] shows that the IBM J9 VM has a -Xquickstart option. [1] http://publib.boulder.ibm.com/infocenter/wasinfo/v5r0/index.jsp?topic=/com.ibm.websphere.base.doc/info/aes/ae/tprf_tunejvm.html http://publib.boulder.ibm.com/infocenter/wasinfo/v5r0/index....