JetBrains Software Engineer Internship interview questions

1. Tell us about yourself. 2. Tell us about one of your projects and describe one issue you had and how you have handle it. 3. Abstract class vs interface 4. FileLock 5. Git fundamentals 6. My git experience 7. Uni courses 8. How could I improve the recruitment project? 9. Garbage collector 10. Memory allocation Stack vs Heap 11. ArrayList vs Array + how are they allocated

Firstly solving a simple algorithmic problem. Then finding a bug in a code. After that I had technical question about Java. Classes, data structures, garbage collection, stack/heap memory.