J2EE Interview Questions - 3

1. What are the problems faced by Java programmers who don't use layout managers?
   
2. What is synchronization and why is it important?
3. What is the immediate superclass of the Dialog class?
4. Name four Container classes?
   
5. What is widning and narrowing ?
6. In overriding, the super class method throws I/O exception & in sub class that method throws arithmetic exception. what happens?
7. How we know a class is Serialized or not from a package
8. What is the difference between Serializalble and Externalizable interface?
9. Please give me answer why we use Interface though it contain only blank implementation
10. What is the order of intialization of variables in Java.
11. How does a try statement determine which catch clause should be used tohandle an exception?
12. How does a try statement determine which catch clause should be used to handle an exception?
13. What is the relationship between clipping and repainting?
14. What state does a thread enter when it terminates its processing?
15. When a thread blocks on I/O, what state does it enter
16. What happens when you invoke a thread's interrupt method while it is sleeping or waiting?
17. What is the difference between yielding and sleeping?
18. What is the difference between String and StringBuffer? Which is better to use in project?
19. When is update method called?
20. What is the use of unicast remote object?