HARMAN interview questions

They were asking about previous projects i worked upon and question only from java collection. Fro m Database MySql,And then writing the pseudo code for some String Handling.then some questions from framework Spring and ORM tool like hibernate.and some objective question to solve immediately and explain why it is so?

Interview process is very bad , some non-experienced people taken a Interview and they reject me without proper reason I will Answer all questions 100 percent but then also they reject me