How to force max to return ALL maximum values in a Java Stream?

Question

I\'ve tested a bit the max function on Java 8 lambdas and streams, and it seems that in case max is executed, even if more than one object compares

Answer 1

If you'd rather rely on a library than the other answers here, StreamEx has a collector to do this.

Stream.of(1, 3, 5, 3, 2, 3, 5)
    .collect(MoreCollectors.maxAll())
    .forEach(System.out::println);

There's a version which takes a Comparator too for streams of items which don't have a natural ordering (i.e. don't implement Comparable).