Johnson Controls interview questions

I have applied for Java, Microservices Developer role. The interview process had 3 rounds totally. Round 1: It was a DSA round, The interviewer asked me to implement the class for Linked list and asked me to code Remove first, middle, and last of a linked list. Then she moved to asking few basic questions. Round 2: It was also a DSA round, the interviewers asked me Group anagrams and Remove All Adjacent duplicates in a String problem. Then moved on to some basic questions like how to do you improve the performance of your application. Round 3: This was with the Hiring Manager. Mostly focussed on explaining the project to me, and was a good experience. Finally HR round with Salary discussion.