Cognizant Software Engineer interview questions

Asked java question Java 8 features. Oops and programming. Program question using stream API asked me questions about lamada expression functional interfaces and one question where I have to print even number from the list collection using Lambda expression or Java 8 feature also there was one question where there were an grams and you have to group the anagrams that match with each other

It was good and not easy all the concepts in java were asked and even programs some of the aptitude questions even given this what happend and the interview was about 40 min and i had a chance to explain everything