Download JNTUH MCA 3rd Sem R15 2017 August 823AD Java Programming Question Paper

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 3rd Sem (Third Semester) Regulation-R15 2017 August 823AD Java Programming Previous Question Paper

R15

Code No: 823AD















JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, August - 2017

JAVA PROGRAMMING

Time: 3hrs













Max.Marks:75


Note: This question paper contains two parts A and B.

Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B
consists of 5 Units. Answer any one full question from each unit. Each question carries
10 marks and may have a, b, c as sub questions.



PART - A



















5 ? 5 Marks = 25

1.a) What are the primary motivational factors for Java development?



[5]

b) Differentiate between class, interface, abstract class.







[5]

c) Compare HashSet and HashMap collection classes.







[5]

d) What are the benefits of exception handling?









[5]

e) What are the various sub classes of JToggleButton?







[5]



PART - B

















5 ? 10 Marks = 50

2.a)

Demonstrate the usage of `this' keyword.

b)

How does Java support abstraction? Give suitable code.







[5+5]

OR

3.a)

Can an object be passed as a parameter to a function? Justify your answer.

b)

What is the main purpose of unboxing?

c)

Is garbage collection is automatic in Java?









[10]



4.a)

Differentiate between method overloading and method overriding.

b)

How to prevent inheritance of a class?











[5+5]

OR

5.a)

What is a nested class? Is it different from inner class?

b)

Explain access modifiers applicable to packages.







[5+5]


6.

Write a program to merge the contents of two files into a target file and retain non-
redundant words in the final file.













[10]

OR

7.

Write a socket program to establish connection and communication between a server and a
client using TCP/IP sockets.













[10]



8.a)

Write a program to simulate nested try statements in exception handling.

b)

Differentiate between `throw' and `throws' usage.







[5+5]

OR

9.a)

What is the need of thread synchronization? How is it achieved?

b)

What is a daemon thread? What is its purpose?









[5+5]



10.a) Describe Model-View-Controller architecture for application development.
b) What is the significance of adapter classes?









[5+5]

OR

11.

Write a program to handle keyboard events and explain delegation event model. [10]

---oo0oo---