uuid.util

    public static UUID sequentialId(int id) {
        Assert.isTrue(id >= 0, "[Assertion failed] - negative id");
        return UUID.fromString(String.format("%08d-%04d-%04d-%04d-%012d", Math.min(id, 99999999), 0, 0, 0, 0));
    }

    public static String asString(UUID uuid) {
        return String.format("%016x", uuid.getMostSignificantBits());
    }