Download JNTUH MCA 3rd Sem R15 2018 June-July 823AD Java Programming Question Paper

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 3rd Sem (Third Semester) Regulation-R15 2018 June-July 823AD Java Programming Previous Question Paper

R15

Code No: 823AD















JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, June/July - 2018

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) Define autoboxing and unboxing.











[5]



b) Define the syntax for creation of inner class.









[5]

c) Differentiate treemap and hashmap.











[5]

d) Define daemon threads.















[5]

e) Define the syntax for checkbox with example.









[5]



PART - B

















5 ? 10 Marks = 50


2.

Explain about the following
a) abstraction b) encapsulation

c) dynamic binding d) inheritance

[10]

OR

3.a)

Write a short note on public, private and protected access specifiers.

b)

Explain about copy constructor.













[5+5]



4.a)

What is a nested class? Differentiate between static nested classes and non-static nested
classes.

b)

How to define a package? How to access, import a package? Explain with examples.






















[5+5]

OR

5.a)

Discuss various forms of inheritance.

b)

Give an example for function overloading and explain.







[5+5]


6.a)

Illustrate with an example the usage of TreeSet and TreeMap classes.

b)

Differentiate vector and arraylist with examples.







[5+5]

OR

7.

Explain collection frame work with examples.









[10]










8.a)

What is meant by user-defined exceptions? Demonstrate with example.

b)

Explain the procedures to create a new thread.









[5+5]

OR

9.a)

What is an exception? What are the benefits of exception handling?

b)

Explain with suitable example java programs the following:

i) Rethrowing an exception. ii) Method Specifying exceptions.





[5+5]


10.a) Explain delegation event model.
b) Write a JAVA program for handling key events.









[5+5]

OR

11.

Write a JAVA program that works as simple calculator. Use a grid layout to arrange
buttons for digits and for the +, -,*, % operations. Add a text field to display the result.

























[10]



---oo0oo--