I have a job interview next week, I change for the first time since 2 years and I try to prepare myself to the technical interview.
Do you know any websites where I can find main questions asked to a java developer interview?
Instead of visiting a website and reading through questions, I would recommend going through topics / technology that the company will quiz you in. Peruse through books / online tutorials and prepare yourself.
-- Reflect back on your CV and prepare how you can relate your past experience to the job specification.
-- Research the company and prepare why you want to work for that company.
-- Refresh your basics on Java and Enterprise Java, this can be quite time consuming and I have put together a Q&A book at my site.