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|Java - Interview Questions and Answers|
|Rarely asked as it was introduced with Java 8.|
|Ans. We can refer to a function using this operator like System.out.println(intList.stream().reduce(Math::max).get());|
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|Like Discuss Correct / Improve  :: operator   lambda expression  java 8|
|What is a Lambda Expression ? What's its use ?|
|Difference between final and effectively final ? Why is effectively final even required ?|
|Difference between Predicate, Supplier and Consumer ?|
|What does the following lambda expression means ?|
|Difference between DoubleSummaryStatistics , IntSummaryStatistics and LongSummaryStatistics ?|
|What is a method reference in Java ?|
|Lets say we have a set "set1" with objects of Class A, Class has a non static string called element1, Write a code ( using lambda expression ) to see if there is any object in the set with element1 = "Hello".|
|Given a collection of Employee objects, how can we get the customers with name starting with 'A' using lambda expression.|
|Why do you think lambda expressions are considered such a big thing for Java 8?|