Minor Description
When the user pass option type FileInputStream.class, I think the expected behavior for the return value is the same type, which the user passed.
Options options = new Options();
options.addOption(Option.builder("f").hasArg().type(FileInputStream.class).build());
CommandLine cline = new DefaultParser().parse(options, args);
FileInputStream file = (FileInputStream) cline.getParsedOptionValue("f"); // it returns "File" object, without check File exist.
I attach a solution for it:
https://github.com/schaumb/commons-cli/commit/abfcc8211f529ab75f3b3edd4a827e484109eb0b
