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Posted By: yamini Member Level: Gold Posted Date: 10 May 2008
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2007 Jawaharlal Nehru Technological University B.Tech Computer science and engineering II II CSE Oops through Java Aug/sep 2007 set III Question paper
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Code No: R05220402 Set No. 3
II B.Tech II Semester Supplimentary Examinations, Aug/Sep 2007
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. Write a program that will compute the following series:
(a) 1/1 + 1/2 + 1/3 + ...... + 1/n
(b) 1/1 + 1/2 + 1/2
2
+ ....... + 1/2n. [8+8]
2. (a) What is class? How does it accomplish data hiding?
(b) How do classes help us to organize our programs?
(c) Compare and contrast overloading and overriding methods. [4+4+8]
3. What are the types of inheritances in java? Explain each of them in detail. [16]
4. Prove that the fields in an interface are implicitly static and final. [16]
5. (a) Give the Class hierarchy in Java related to exception handling. Briefly explain
each class.
(b) What is the necessity of exception handling? Explain exception handling
taking “divide-by-zero” as an example. [6+10]
6. (a) Why creating a subclass of Frame is preferred over creating an instance of
Frame when creating a window.
(b) Explain the steps in creating a subclass of frame with the help of examples.
[4+12]
7. Briefly explain the components of AWT. [16]
8. (a) How does Random class generate pseudo random numbers?
(b) Write a program to generate a set of random numbers. Find its sum and
average. The program should also display * based on the random numbers
generated. [8+8]
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