There were two rounds.

The first round was taken by two interviewers. The questions were really good and interesting.

The second round was taken by a manager. He was extremely rude. He was not prepared to take the interview and simply googled for questions.

He then asked me to write two simple code snippets, which were very easy, but the third code was a bit complex, and he couldn't understand my solution. Later, he started making rude remarks, like I was wasting his precious time with my attitude and that even if I am smart, I might reject work. He talked very unprofessionally.

I never expected such an experience from Oracle. I was very disappointed.

What is the difference between overloading and overriding?

Swap two numbers without a third variable.

Take a string and an integer as input to a function and return the string after removing all repetitive characters which are exceeding the integer.