5. A system for instrumenting a computer-based software application, the system comprising: instrumentation apparatus configured to instrument instructions of a computer-based software application, said instructions being in a first computer instruction language, with a native handler referencing instructions in a second language, wherein execution of said computer software application requires a loading of a first class before a loading of a second class, and wherein said instrumentation apparatus is configured to instrument said computer software application at a location within said computer software application where a reference to said second class in said first computer instruction language would cause said second class to be loaded before said first class during execution of said computer software application; and at least one instruction referenced by said native handler in said second computer instruction language to reference said second class in said first computer instruction language, wherein any of said apparatus and instructions are implemented in any of a) computer hardware and b) computer software embodied in a non-transitory, computer-readable medium.
5. A system for instrumenting a computer-based software application, the system comprising: instrumentation apparatus configured to instrument instructions of a computer-based software application, said instructions being in a first computer instruction language, with a native handler referencing instructions in a second language, wherein execution of said computer software application requires a loading of a first class before a loading of a second class, and wherein said instrumentation apparatus is configured to instrument said computer software application at a location within said computer software application where a reference to said second class in said first computer instruction language would cause said second class to be loaded before said first class during execution of said computer software application; and at least one instruction referenced by said native handler in said second computer instruction language to reference said second class in said first computer instruction language, wherein any of said apparatus and instructions are implemented in any of a) computer hardware and b) computer software embodied in a non-transitory, computer-readable medium. 8. A system according to claim 5 wherein said instrumentation apparatus is configured to instrument a system class.