Gemini Java Developer interview questions

In their 1st written round in which they have 20 questions of aptitude , 20 output based questions of C, C++ and 20 coding questions from Java , JavaScript and HTML. I cleared this round . My written got finished by 11 am and they made me wait till 4 pm for the interview. The person who came for the interview was not knowing Java , I don't understand how can they show soo unprofessional behavior as they were hiring for Java profile and the written was also Java specific. The interviewer who was not knowing Java somehow stated that I have not cleared this round without even asking me any questions from Java , he was just simply asking brain teaser problems. Very unhappy with this kind of behavior