Java code to convert country codes alpha-2 (IN) to alpha 3 (IND)

Using Java, Is there a quick way to convert an alpha-2 country code (IN or GB) to the alpha-3 equivalent (IND or GBR)?

I can get the alpha-2 codes with:

String[] codes = java.util.Locale.getISOLanguages();

That's not a problem, actually my application reads in the alpha-2 code, but I need to output the alpha-3 equivalent .

Is there a similar way like above to get the alpha-3 codes?

Any suggestions?