Bloomberg Software Developer New Grad interview questions

I applied online and in 3-5 days received an invitation email to a phone interview. In a week I had my interview with Bloomberg. An interviewer called 25 minutes later and had a lot of outside noise around him. (As if someone was washing dishes). The interview asked 3 questions to choose from. I solved the first question but was not able to compile a program. I used java as a language, and the interviewer insisted on rum 2 separate nonstatic classes and static main in one file. I told him it is possible to do so in 2 separate files, but he kept asking to fix it. He did not count the problem as correct (even though the logic and solution were correct). He told me to solve another problem. It was an easy BST problem, but I so nervous the realize how easy it was and solved it correctly only after an interviewer helped me. (My fault, I got it). I got a rejection email in two weeks.