Some of the tech guys seem pretty aggressive.

For the behavior part, it's like talking to a robot, and the questions are not easy to answer, at least for me.

The following questions were asked during the four-round onsite interview:

1. What is the Prototype Pattern?

2. Given two overloaded functions, void test(String str) and void test(Object obj), which method will execute when test(null) is called?

3. Write a test case using Mock.

4. Simple RESTful design. (Regarding this part, I felt the interviewers lacked comprehensive knowledge, only demonstrating familiarity with the Spring framework's approach.)

5. Synchronized keyword usage.

6. Go over my resume.

7. equals() & hashCode().

8. ACID meaning.

9. Normalization.