Passed Java SE 7 Programmer II. The result is 80 percent </ b>. It was okay. It's been 3 years since I worked, but I had only about 10 months of experience in development itself (on the web), so I had a lot of time to study at home or when commuting. Study time is about 3 months. Multithreaded programming was difficult because I had never done it in business.
I don't think it's a relatively difficult exam. Should I think of it as a test to learn design patterns and how to use the API? You don't have to go deep into logic or algorithms. Collection, file processing, and regular expressions were especially problematic. The three on the left are often dealt with in business, so the three-month study period was very meaningful (because I didn't understand the collection so much ...).