Dynamic jar file inclusion at run time

Hello,
I have a java application which should accept the three parameters.
1) The jar file location
2) Particular Class file insdie that jar(we specified the location in step number 1)
3) And method name in that class.
My question is how to include specified jar location with jar name to CLASSPATH at run time. So that i can execute a particular method name in step number (3).
I would appreciate for the quick reponse or any input.
Thanks,
Raghu

And if you want to change the system classpathduring
runtime, don't forget that you can always use
reflection to call the System classloader'sprotected
addUrl method :)Really?
Seems reasonable although this is the first time I
have seen that referred to.you can indeed. I've done this, as a quick avoid-writing-a-classloader hack. wouldn't really recommend it, though. if you're using reflection to modify access, chances are you're doing a massive fudge
and of course, since it's not part of a public API, there's absolutely no reason to the method won't simply disappear in a future release....

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Can we load and unload the files in the run time?

Can we load and unload the files in the run time?
For example there are four files named "test1.h & test1.c" and another set "test2.h & test2.c" (I attached them as attachment to this post).
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Go to Solution.
Attachments:
test.zip ‏1 KB

What do you mean by "dynamically"?
If you want to have a variable that either is an int or a char in the same program run, I'm afraid your only option is to define it as a variant and assign from time to time the proper data type in the variant according to some condition. Next, every time you access the variable you must firstly check which data type is stored in it, next access it in the proper way.
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Dynamic jar file inclusion at run time

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