Howto find out location from where class was loaded

Hi all.
Is there any way I can find out from which directory, jar or url a certain object/class was loaded?
Somewhere in the code the object is instantiated (class is loaded). E.g. like so:
SomeObject someObjectInstance = SomeObjectFactory.getInstance();
Can I use this object to find out from where in the file system it was loaded? E.g.
someObjectInstance.class.fooMethod() or
someObjectInstance.class.getClassLoader.barMethod()
Thanks for any help.
Joe

Usage is actually like so:
MyClass myInstance = (...)
myInstance.getClass().getResource("/package/MyClass.class") returns the url object, pointing to the class;
if you want a string instead, simply append toString():
myInstance.getClass().getResource("/package/MyClass.class").toString()

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Howto find out location from where class was loaded

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