1. A virtual machine system comprising: a processor; and a memory coupled with and readable by the processor and having stored therein instructions which, when executed by the processor, cause the processor to execute a first shared loader including a first class, a first generic loader importing said first shared loader, wherein importing the first shared loader into the first generic loader comprises adding the first shared loader to the first generic loader, a second generic loader importing said first shared loader, wherein the second generic loader is not a parent or child of the first generic loader, wherein importing the first shared loader into the second generic loader comprises adding the first shared loader to the second generic loader, and wherein the first class of the first shared loader is shared between the first generic loader and the second generic loader, and an execution engine for executing said first generic loader and said first imported shared loader.