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Java 8 - Streams - Actions - Max


  • max operation on stream returns an optional of the maximum item in the stream.
  • Another implementation of max operation returns an optional of the maximum item in the stream with respect to a comparator function.

int stream one to three
IntStream oneToThree = IntStream.of(1, 2, 3);

int stream one to two
IntStream oneToTwo = IntStream.of(1, 2);


 order by greater number comparator
Comparator<Integer> orderByGreaterNumber = (n1, n2) -> n1.compareTo(n2);



USAGE

 log.info("obtaining the max item in oneToThree stream: " + oneToThree.max());

log.info("obtaining max item in oneToTwo stream using a comparator: " + oneToTwo.boxed().max(orderByGreaterNumber));



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