Interviewed with 4 person all in the same room. The interview last for more than an hour. They asked me to solve the code problem in 30 min with writing tests. If I would have read the "Head first design Patterns" I would have solved that easily . Mostly questions was asked by the Architect level person rest of the people didn't ask anything. The Architect asked me so many questions on design patterns, JSTL, JSP, Spring - framework, JMS, Core Java, collections. Most of the questions were theoritical and if you would have read books you could pretty much answer most of them.