I think The Interviewer was not in a good mood, because the interview was scheduled in the evening slot. He only asked me to write one problem solving based on some algorithm. I got 50% of the use cases as success. but He wanted me to be a pro in cracking the problem. I wonder out of the 100s of problem solving question. He asked only one problem solving question and judged my potential. He doesn't even care to test my Other abilities. Just a suggestion for Altimetrik is that if you want only problem solving, please don't invite for face to face and just throw us some link for the problem solving session. face to face interview has it's own value , please train your employees to how to judge the candidate on more than one criteria

The interviewer asked me the following questions : 1. Introduction 2. Difference between hashtable and hashMap 3. wake notify and notifyAll belongs to which class ? 4. Asked similar methods which class they belong to 5. Coding question : create a thread pool of 3 using executorService and perform an operation using all 3 threads 6. ConcurrentModification Code Example - output 7. Spring boot basic annotations.