Java Interview Questions

1. What does RandomAccess mean?
2. What is thread contention?
3. Java 8 New Features? Lambda Expressions , Optional Class , Defender Methods
4. What is Atomic in Java?
5. 133 Core Java Interview Questions Answers?
6. What is the difference between ArrayList.clear() and ArrayList.removeAll()? [ Ans... ]
7. What are checked/unchecked exceptions?
• All Unchecked exceptions are direct sub classes of RuntimeException class. Unchecked exceptions are to fix app data error.
8. Comparable vs Comparator?
9. What is marker interface?
10. Java 7 features?