We Are Going To Discuss About Null safe date comparator for sorting in Java 8 Stream. So lets Start this Java Article.
Null safe date comparator for sorting in Java 8 Stream
- Null safe date comparator for sorting in Java 8 Stream
You can turn your own null-unsafe
Comparatorinto an null-safe one by wrapping itComparator.nullsLast. (There is aComparator.nullsFirstalso.) - Null safe date comparator for sorting in Java 8 Stream
You can turn your own null-unsafe
Comparatorinto an null-safe one by wrapping itComparator.nullsLast. (There is aComparator.nullsFirstalso.)
Solution 1
If it’s the Items that may be null, use @rgettman’s solution.
If it’s the LocalDates that may be null, use this:
items.stream()
.sorted(Comparator.comparing(Item::getCreateDt, Comparator.nullsLast(Comparator.reverseOrder())));
In either case, note that sorted().findFirst() is likely to be inefficient as most standard implementations sort the entire stream first. You should use Stream.min instead.
Original Author Paul Boddington Of This Content
Solution 2
You can turn your own null-unsafe Comparator into an null-safe one by wrapping it Comparator.nullsLast. (There is a Comparator.nullsFirst also.)
Returns a null-friendly comparator that considers
nullto be greater than non-null. When both arenull, they are considered equal. If both are non-null, the specifiedComparatoris used to determine the order.
.sorted(Comparator.nullsLast(
(e1, e2) -> e2.getCreateDt().compareTo(e1.getCreateDt())))
.findFirst();
Original Author rgettman Of This Content
Conclusion
So This is all About This Tutorial. Hope This Tutorial Helped You. Thank You.
