Jawaharlal Nehru Technological University Anantapur 2010-1st Sem B.Tech Code %3AR7411302 3 IV .ester%28R07%29Regular s%2C ember%2Fember OBJECT ORIENTED PROGRAMMING - Question Paper

Code :R7411302 3
IV B.Tech.I Semester(R07)Regular Examinations, November/December 2010
OBJECT ORIENTED PROGRAMMING
(Electronics & Control Engineering)
Time: three hours Max Marks: 80
ans any 5 ques.
All ques. carry equal marks
1. (a) elaborate the main concepts of object oriented programming?
(b) What is constructor function? discuss di®erent kinds of constructors?
2. (a) What is meant by call by reference? How call by reference can be achieved in Java?
(b) explain the string class in Java.
3. (a) A super class variable can reference a sub class object. Justify with an example program.
(b) Write a Java program to implement multiple inheritance using interface.
4. (a) What is an interface? elaborate the similarities ranging from interface and class?
(b) How to design and implement an interface. discuss with an example program.
5. (a) elaborate the di®erences ranging from synchronous and asynchronous exceptions.
(b) When try, catch, throw, statements are used. discuss with an example program.
6. discuss the following:
(a) Delegation event model
(b) Adapter classes
(c) AWT Vs SWING components.
7. Write a program to illustrate the mouse and window events.
8. elaborate the uses of TCP/IP client sockets and discuss in detail.

Earning:   Approval pending.