Oracle Associate Software Engineer interview questions

It was an on campus hiring. After 2 rounds of online assessments there were 3 rounds of interviews of about 45 minutes each. In round 1 I was questioned at length on the projects in my resume, followed by some Data Structure questions(Binary Trees), ending with a puzzle. In round 2 there were a lot of questions on OOPS and then some coding question which were of easy difficulty level. We also discussed sorting algorithms, their complexities and slight variations of common algorithms. Round 3 was more laid back and it was a more casual discussion of my interests and my knowledge in different programming languages and what I should focus on in the future.