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| Ans. Filters are used to filter object in stream on certain criteria. Collector is used to collect outcome of the stream. Collector is a terminal operation. List numbers = List.of(1,2,3,4,5,6,7); List evenNumbers = numbers.stream().filter(n -> n%2==0).collect(Collectors.toList()); The above code will filter out odd numbers and return the list of even number. | ||||
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 Discuss Correct / Improve  collectors filters java 8 | ||||
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 What are we doing herelist.stream().collect(Collectors.groupingBy(ClassA::getElement1, Collectors.averagingDouble(ClassA::getelement2))); | ||||
| What will the following code return list.stream().collect(Collectors.groupingBy(ClassA::getElement1, Collectors.averagingDouble(ClassA::getElement2))); | ||||
