Two telephonic interviews were taken on two separate days, and each call stretched for approximately 1.5 hours. Then, a face-to-face interview was conducted in their Mumbai office, which went on for 3 hours at a stretch without any break. Six different people took turns to interview me. It was quite a difficult process with lots of conceptual as well as functional questions, apart from technical questions and problems, but I'm happy that I could make it finally.

Lots on core Java, multithreading, strings, and concurrency.