public String getString() { StringBuilder buff = new StringBuilder(36); appendHex(buff, high >> 32, 4); buff.append('-'); appendHex(buff, high >> 16, 2); buff.append('-'); appendHex(buff, high, 2); buff.append('-'); appendHex(buff, low >> 48, 2); buff.append('-'); appendHex(buff, low, 6); return buff.toString(); }