String timeuuid = com.datastax.driver.core.utils.UUIDs.timeBased().toString(); посмотрите https://docs.datastax.com/en/drivers/java/2.0/com/datastax/driver/core/utils/UUIDs.html
String timeuuid = com.datastax.driver.core.utils.UUIDs.timeBased().toString();
посмотрите https://docs.datastax.com/en/drivers/java/2.0/com/datastax/driver/core/utils/UUIDs.html