git clone git://github.com/TakahikoKawasaki/CountryCode.git

CountryCode cc = CountryCode.getByCode("JP");

System.out.println("Country name = " + cc.getName());                  // "Japan"
System.out.println("ISO 3166-1 alpha-2 code = " + cc.getAlpha2());     // "JP"
System.out.println("ISO 3166-1 alpha-3 code = " + cc.getAlpha3());     // "JPN"
System.out.println("ISO 3166-1 numeric code = " + cc.getNumeric());    // 392