Jawaharlal Nehru Technological University Hyderabad 2006 B.E Electronics & Tele-Communication Engineering OOPS THROUGH JAVA - Question Paper

OOPS THROUGH JAVA SET NO : 1

November - 2006

(Common to II B.tech II Semester CSE,IT & ECE)

(II B.Tech I Semester ME)

ans any 5 ques.

All ques. carry equal marks

1. Write a program that will calculate the subsequent series

a) 1/1+1/2+1/3+........+1/n

b) 1/1+1/2+1/2^(2)+.......+1/2^(n) [8+8]

2. a) When do we declare a method or class final?

b) When do we declare a method or class abstract?

c) define various levels of access protections avilable in java?
[4+4+8]

3. What is inheritance ? define the differences in inheritances in

c++ and java? [16]

4. Write a programme to create a class containing a inner class that

it self contains an inner class. Repeat this using static classes.

Note the names of the class files produced by the compiler. [16]

5. a) What is multithreading? elaborate its advantages?

b) Compare process based and thread based multitasking. [6+10]

6. discuss in detail about the subsequent event classes

a) Component Event

b) Container Event

c) Focus Event [6+5+5]

7. What is the use of Jframe containing a JDesktoppane, which has a

single JInternalFrame. [16]

8. Write a short note on:

a) Currency Class

b) Proxy Servers

C) DNS. [5+5+6]

Earning:   Approval pending.