public static void traverseDirectories(String path) {
        File directory = new File(path);

        if (directory.isDirectory()) {
            System.out.println(directory.getName() + ":");
            traverse(directory, 1);
        }
    }

    private static void traverse(File file, int indentLevel) {

        File[] files = file.listFiles();
        if (files != null) {
            for (File fileInArray : files) {
                String spacings = "  ".repeat(indentLevel);
                if (fileInArray.isDirectory()) {
                    System.out.println(spacings + fileInArray.getName() + ":");
                    traverse(fileInArray, indentLevel + 1);
                } else {
                    System.out.println(spacings + fileInArray.getName());
                }
            }
        }
    }