Java Programming

If one of the file names is a directory, add all the files inside it to the chain. If you want to get even fancier, do this recursively.

I have this method:

private static void addFile(StringChain chain, String regex, Path file) {

try {

Scanner s1 = new Scanner(file);

s1.useDelimiter(regex);

chain.addItems(s1);

} catch (IOException ex) {

ex.printStackTrace();

}

}

And code within main method that adds files to string:

for (int a = 3; a < args.length; a++) {

String f1 = args[a];

addFile(chain, regex, Paths.get(f1));

}

How do recursively add all files inside file directory to chain? (Possibly using .walkFileTree)