Stryker Software Intern interview questions

We had one online test on mettl platform, it had questions involving aptitude, reasoning, and computer fundamentals, it was for about 90 mins. I qualified the first round, so second round was interview, there were three interviewers, the first ques was to check if a string is pallindrome or not, then asked some oops concepts, some java fundamentals( interface etc.] , as i am more profound in c++, so was'nt able to answer those java ones. Rest, the interview lasted for about 20-25 mins.