Interview: Java Programmer (5.6)

In the morning, when I was wearing clothes, I received an interview call, the interviewer asked a few questions, I feel the answer is not good, feel prepared too inadequate, a kind of I wrote a year of Java but nothing to know the feeling. I feel really good low, even multi-threading can not complete the answer, incredibly jammed. All the ~sad in my head.
1. Do you know anything about swing? What are some of the most commonly used packages that can be described below?

What are 2.collection, such as list? What are the specific implementation classes for the list? is ArrayList thread-safe? If the thread is unsafe, how to circumvent it?

3. What are the different ways to implement multithreading?

Do you know anything about 4.J2EE? How is the database science, SQL familiar?

5. There are a few other titles that have not been heard, and cannot remember.

Interview: Java Programmer (5.6)