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The section titled "Retrieving the argument value" shows an example of accessing the getOptionValue() method of Options. This is actually a method of CommandLine.

// get c option valueBR
String countryCode =options.getOptionValue("c"); // (Wrong if options is an instance of Options)

This should instead be:

// get c option valueBR
String countryCode =cmd.getOptionValue("c"); // (Here cmd is an instance of CommandLine)