A DESCRIPTION OF THE PROBLEM :
UUIDv7's time-based sortability makes it an attractive option for globally unique identifiers, especially in database applications. (https://www.rfc-editor.org/rfc/rfc9562#name-uuid-version-7)

As DBMS vendors add support for UUIDv7 (https://commitfest.postgresql.org/47/4388/) Java users will not easily take advantage of its benefits until it is included in the Java core libraries.