Generating 8-character only UUIDs

Question

UUID libraries generate 32-character UUIDs.

I want to generate 8-character only UUIDs, is it possible?

Answer 1

As @Cephalopod stated it isn't possible but you can shorten a UUID to 22 characters

public static String encodeUUIDBase64(UUID uuid) {
        ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
        bb.putLong(uuid.getMostSignificantBits());
        bb.putLong(uuid.getLeastSignificantBits());
        return StringUtils.trimTrailingCharacter(BaseEncoding.base64Url().encode(bb.array()), '=');
}