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Όχι κάτι συγκεκριμένο.
Αυτό μπορείς να το κάνεις απευθείας με την LocalDateTime. Για παράδειγμα, κοίτα την στατική μέθοδο of (περισσότερα εδώ: https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html)