Getting font files used by Java

Hi everyone,
I am writing an application which allows the user to use different fonts available on the system. When saving a document in this application, I would like to include the fonts with the document, rather than just references (in case the document is transferred to another system that doesn't have the fonts installed).
Presumably this is a simple case of finding the location of each font file used within the document and then copying it to the folder containing the document (then the document can use the local fonts).
However, I wasn't able to find a (system-independent) way to determine where a given font is located on the system. Can anyone point me in the right direction for doing this?
Thanks,
Bren

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