HCLTech Java Developer interview questions

I applied through job portal and I was interviewed on a weekend. I went as far as the second round. The first round was telephonic interview where I was drilled in Java. Questions were from Collections, Interfaces, Java 8 features (functional interface and lambda expression). I cleared the first round and 10 mins later got the call for second round. In the second round they asked me iterate map via lambda expression. It was easy but I made a mistake. I wrote a singleton code and then he asked to be prevent it from creating cloned objects which I did. That was all but then I never heard back. I assume not able to iterate a map was the reason. Anyways I hope this helps. Good luck 🙂

2 rounds. 1st round was about core java and simple programs(Swipe two numbers without temp variable, Fibonacci Series, Sum of given integer input, Reverse a number, etc.). 2nd round was about creating REST API and JUnit test cases.