Compiled byte code from version a and version b of some external library?

Hi,
We are having a bit of debate in our office about compiling code against to different external libraries.
i reckon the compiled bytecode should be the same, but there are differences of opinion so i thought i would come here and see what people thought.
lets say i am compiling my code using jar coollib1.0,
lets also assume i use the jar in all possible ways, extends classes, implement its interfaces, use methods and so on...
Now cool lib comes out with coollib1.2, and our code compiles using this new jar. Is the actual compiled bytecode the same or not?
Thanks a Mill,
Anthony

yes, but that resolution is done runtime, notcompile
time.No, resolution of overloaded methods is done at
compile time. Resolution of overridden
methods is done at run time.and that's part of the problem.
You're compile time resolution will now cause a method to be picked up that is the wrong one (or may even be unavailable in the new class version or at another memory address).
Or you may have a runtime resolution built into the compiled code that when compiled against the new version would change to a compile time resolution (and maybe cause a compiler error because of that).

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