Pergunta de entrevista da empresa Mastercard

What are Generics and a code snippet regarding what the output would be. I answered correct here. Difference between abstract and interface and what is the uses of default methods in interface and what is the difference between default and static methods in it -- here I got a little confused. HashCode and equals logic question --- snippet he gave in which I answered wrong in one case but the rest were right. He moved with Stream api and asked me to write a bunch of code andfor even odd he told me to use only single stream -- I forgot the partitioningBy() method which was fine i went old school He asked me a good theory related questions I was confidently answered them. Output -- No response. I called the same TA asking for update and feedback she said she was busy and will call back. No response. This is how Mastercard recruits people.