I applied online about a month ago and received a call on Thursday for an interview scheduled for Sunday. I was asked to choose a time slot, which I did. The interview was supposed to consist of three rounds, all to be completed on the same day.

Some of my batchmates were present and told me that the first round was more of a friendly familiarization session where we discussed our projects. However, I had a different interviewer, and I was genuinely surprised at the poor quality of the interview.

I had previously attended many interviews with various companies (Robert Bosch, UST, Infosys, Mcfadyen, CTS) and always left with a positive feeling.

The Oracle interviewer seemed much younger than me and inexperienced too.

1. He asked me to introduce myself but at no point did he bother to introduce himself or explain how he planned to conduct the interview.
2. He had very poor communication skills, and at one point, I even ended up speaking in Malayalam to him, as it seemed he was not understanding what I said.
3. When I was answering his questions, he would interrupt before I had finished speaking.
4. He found a spelling mistake (in the name of a place) in my resume and spent a significant amount of time making a fuss about it. I remained calm, composed, and did not lose my temper.
5. The most irritating part was when, for some questions, while I was explaining, he would mock me as if I were making things up or giving an excuse for something I didn't know. I was quite shocked at his response, but I stayed my ground and looked him directly in the face. When he realized I was serious, he stopped smirking and became serious all of a sudden.

The round started with introductions, explaining the projects I had done, and why I chose this technology. He asked me to explain the OOPs concepts, which I did, asked me a little about Spring, and whether I knew any other forms of polymorphism besides overriding and overloading, to which I answered.

He then gave me a problem: to write a program to find all combinations of the letters of a word while keeping the order of the letters intact and not rearranging their sequence. He asked me to write two programs in Java, one for sequential execution and the other using multithreading.

He presented a problem: writing a program to find all combinations of the letters of a word, while keeping the order of the letters intact and not rearranging their sequence. He asked me to write two programs in Java: one for sequential execution and the other using multi-threading.