Let's say I have the following:
List<Integer> orderedList = Stream.of(5, 4, 0, 2, 1).sorted().toList();
If I apply a filter such as
List<Integer> filteredList = orderedList.stream().filter(integer -> integer < 3).toList();
Will filter check all items in orderedList, or given that it's ordered, it will stop filtering after it reaches the first false condition, i.e., integer >= 3, or does it always check all items?
If it checks all items, is there a smarter way to filter items in a situation with an ordered list?
In your scenario, since you return a list with all the elements matching the filter, filter() is applied for all the elements in the stream.
If you want to stop processing when a specific condition is true/false you can use takeWhile() from Java 9:
orderedList.stream().takeWhile(v -> v < 3).forEach(System.out::println);