10 questions to check your knowledge of Object Oriented Language

1. What's the difference between class and object?
2. What can be put in class definition?
3. Describe all access modifiers.
4. What characterize static class?
5. What's the difference between class field and static class field?
6. What is a method signature?
7. What is an interface and how do you implement interface?
8. What is a default constructor?
9. How to call constructor from another constructor? How to call base class constructor?
10. How do you define constants?