Capture JVM output machine code

Does anybody know how to capture the machine code output from the JVM? I am running Windows Vista Professional.
I ask because I am creating a Computer Architecture course, and I would like to show the students the IA instructions that are generated by the JVM. The textbooks I have been investigating traditionally introduce assembly language by way of C++. The problem is that these students are taught programming using Java. I know the Java compiler output is bytecode, but this does not help me teach the actual architecture of the computer.
Thanks in advance.

Thanks all for you replies
georgemc: What you are saying is that while one can recognize a method that was written in Java in the bytecode, there is no relation between the original method (or the corresponding bytecode for that matter), and the machine code output of the JVM? For example, using Visual C++ once can view the disassembly of a method and see the IA assembly language, the values of the registers (including the flags register).
paulcw: Thanks for the suggestion. Your approach may work for future sessions, but I am afraid I do not have time to implement for this coming semseter
Captain Obvious (nice name): I had thought of taking an approach similar to your posting. However, I must cover specific topics in the class and there will not be time. For instance, I am expected to cover representing and manipulating information, machine-level representation of programs, processor architecture, optimizing program performance, memory hierarchy, exceptional control flow, and virtual memory. The difficulty some students encounter is that, up until this course, have been taught only Java programming. Then, they take this course which teaches everything from a C/C++ perspective. I was hoping I could demonstrate machine code in C++, as well as Java in an attempt to keep all levels of students engaged.

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