How to know which class is being loaded from which jar file & path location

Hi,
I have some Java code using several jar files.
I want to remove those jar files which are not being used by the code.
So , I want the JVM to output which class is being loaded from which jar .
Using "java -verbose" option doesnt solve the problem because the required info is printed only for the classes/jars native to the J2SE package .
Can anyone provide a solution which does not require me to modify the code?
Thanks,
Danish

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