Steelwedge Software Software Engineer interview questions

HR picked my resume from Naukri.com. She scheduled my technical telephonic interview. Telephonic interview was good. But they did not do at scheduled time. I called them two times. Thereafter I got my interview started 2:30 hours late. Questions were on 1. Garbage Collection in detail 2. Polymorphism(Overriding contract) in detail 3. Abstract class and Interface 4. There was a logical question(I forgot) 5. Basic Thread Questions. This interview duration was 25 minutes. Interviewer told me that HR will get back to me. 2 days later, I was called for face to face round. In 2nd round, Questions were on 1. A train puzzle. 2. Again Garbage Collection in detail 3. How you will make your own serializable class. 4. About my project. 5. Why I want to leave my current company. Then He explained about my role and company. Again. Interviewer told me that HR will get back to me. 2 days later, I was told that i was selected. & They called me for HR round.(Negotiation and all.) I did little bargaining. and then I accepted the offer.