1. Can an Abstract class be final
2. If obj1. equals(obj2) = true. Then
3. Which of the following collections are thread-safe?
4. What will be output of following code? abstract final class AbstractFinalClass{}
5. When do flattening of object happens?
6. A set doesn’t allow duplicate elements
7. class A implements java.lang.Runnable will override
8. Is it possible to change visibility of an inherited method
9. If the size of data is well known, which of the following will be preferred based on performance metric
10. What will be output of following code public class Tek{public static void main(String[] args){ HashSet h=new HashSet (); h.add(johny); h.add(johny); h.add(johny);System.out.println(h.size());}}