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Posted Date: 14 Aug 2009 Posted By: chandra Member Level: Gold

2009 Jawaharlal Nehru Technological University Code No: R05220402 II B.Tech II Semester Supplimentary Examinations, Apr/May 2009 OOP THROUGH JAVA ( Common to Electronics & Communication Engineering, Computer Science & Engineering, Information Technology) Question paper

Course: B.Tech Information Technology

University: Jawaharlal Nehru Technological University

Code No: R05220402 Set No. 1
II B.Tech II Semester Supplimentary Examinations, Apr/May 2009
OOP THROUGH JAVA
( Common to Electronics & Communication Engineering, Computer Science
& Engineering, Information Technology, Computer Science & Systems
Engineering, Electronics & Telematics and Electronics & Computer
Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. (a) List at least ten major differences between C and Java
(b) Compare in terms of their functions, the following pairs of statements:
i. while and do?.while
ii. while and for
(c) What is an empty statement? Explain its usefulness. [4+4+4+4]
2. (a) What is the difference between equality of objects and equality of objects and
equality of references that refer to them?
(b) What is the difference between a public member and a private member of a
class?
(c) write an application that computes the value of ex by using the formula:
ex = 1 + x/1! + x2/2! + x3/3! + .......... [4+4+8]
3. (a) Discuss about Hybrid Inheritance with a suitable example.
(b) Discuss about Hierarchical Inheritance with a suitable example. [8+8]
4. (a) What is interface? Write a program to demonstrate how interfaces can be
extended.
(b) What is package? How do you create a package? Explain about the access
protection in packages? [8+8]
5. (a) What is the significance of main thread in multithreading. Explain with an
example how you can control main thread.
(b) What is the role of Sleep class in multithreading. Explain. [10+6]
6. Using a Frame window, write a program to handle all mouse events. [16]
7. What are various JFC containers? List them according to their functionality. Ex-
plain each of them with examples. [16]
8. Explain the following concepts with examples:
(a) Datagrams
(b) Sockets.

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