IT 2301 - JAVA PROGRAMMING NOV/DEC 2010 PREVIOUS YEAR QUESTION PAPER

B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2010

Fifth Semester

Information Technology, Computer Science

IT 2301 - JAVA PROGRAMMING

(Regulation 2008)

Time : Three hours Maximum : 100 Marks

Answer ALL questions

PART A — (10 × 2 = 20 Marks)

1. What is the difference between static and non-static variables? 

2. What is the purpose of finalization?

3. What is the difference between the String and StringBuffer classes? 

4. Can an abstract class be final? Why? 

5. What is an anonymous inner class? 

6. What is the difference between the File and Random Access File classes? 

7. What are the advantages of the event-delegation model? 

8. What happens if an exception is not caught? 

9. What is the use of Reflection API? 

10. What are three ways in which a thread can enter the waiting state?

PART B — (5 × 16 = 80 Marks)

11. (a) Explain briefly the following object oriented concepts. 

(i) Abstraction and Encapsulation. (4) 

(ii) Methods and messages. (4) 

(iii) Inheritance. (4) 

(iv) Polymorphism. (4)

  Or

(b) (i) How objects are constructed? Explain constructor overloading with an example. (10) (ii) Write short notes on access specifiers in java. (6)

12. (a) What is a Package? What are the benefits of using packages? Write down the steps in creating a package and using it in a java program with an example. (16) 

Or

(b) What is Dynamic binding? Show with an example how dynamic binding works. (16)

13. (a) What is object cloning? Why it is needed? Explain how objects are cloned.(16) 

Or

(b) How is a Frame created? Write a java program that creates a product enquiry form using frames. (16)

14. (a) With a neat diagram explain the Model view controller design pattern and list out the advantages and disadvantages of using it in designing an application. (16) 

Or

(b) What is an Exception? Explain how to throw, catch and handle Exceptions. (16)

15. (a) What is Generic programming and why is it needed? List the limitations and restrictions of generic programming. (16) 

Or

(b) Explain how to create threads. Write a java program that prints numbers from 1 to 10 line by line after every 5 seconds. (16)