StreamCollector.java

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CompletableFuture.java

StreamCollector.java

RecordPattern.java

VirtualThread.java

MethodHandle.java

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StreamCollector.java

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var result = users.stream()↵

.collect(Collectors.teeing(↵

Collectors.filtering(u -> u.age() > 18, Collectors.toList()),↵

Collectors.groupingBy(User::dept,↵

Collectors.mapping(User::name, Collectors.toSet())),↵

(adults, byDept) -> new Stats(adults, byDept)↵

));

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