import java.io.File;

/**
 * Repertoires
 */
public class Repertoires {

    public static void main(String[] args) {
        Tree<String> tree = new Tree<>();
        File f = new File(args.length > 0 ? args[0] : ".");
        tree.getRootNode().setValue(f.getName());
        fillNode(tree.getRootNode(), f);
        tree.showTree();
    }   

    public static void fillNode(Node<String> node, File folder) {
        for (File f : folder.listFiles()) {
            Node<String> subNode = new Node<String>(f.getName());
            
            if (f.isDirectory()) {
                fillNode(subNode, f);
            }

            node.addSubNode(subNode);
        }
    }
}