ISO9660Directory n1 = new ISO9660Directory("D1");
n1.addDirectory(n2);
ISO9660RootDirectory root = new ISO9660RootDirectory();
root.addDirectory(n1);
StreamHandler streamHandler = new ISOImageFileHandler(outfile);
CreateISO iso = new CreateISO(streamHandler, root);
ISO9660Config iso9660Config = new ISO9660Config();
iso9660Config.allowASCII(false);
iso9660Config.setInterchangeLevel(2);
iso9660Config.restrictDirDepthTo8(true);