String (CharSequence classOrPackageName, CharSequence... suffix) { StringBuilder buf = new StringBuilder(); for (int i = 0, len = classOrPackageName.length(); i < len; i++) { char ch = classOrPackageName.charAt(i); buf.append(ch == '.'? '/' : ch); } for (CharSequence s : suffix) { buf.append(s); } return buf.toString(); }