Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 2nd Sem (Second Semester) Regulation-R19 2021 July-August 862AD Object Oriented Programming Previous Question Paper
R19
Code No: 862AD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
2021 MCA II Semester Examinations, July/August - 2021
OBJECT ORIENTED PROGRAMMING
Time: 3 Hours
Max.Marks:75
Answer any five questions
All questions carry equal marks
- - -
1.a)
Discuss the need of object oriented programming paradigm.
b)
List the data types supported by Java and give their size.
[8+7]
2.a)
How to perform constructor overloading in Java? Explain with an example program.
b)
Write a Java program to count number of words in a given sentence.
[8+7]
3.a)
Explain the benefits and costs of inheritance.
b)
Demonstrate package creation and accessing with a suitable program.
[8+7]
4.a)
How to implement multiple inheritance in Java? Explain with a program.
b)
What are the two ways of using `super' keyword?
c)
Differentiate between an interface and an abstract class.
[5+5+5]
5.a)
What is an exception? Discuss exception handling in Java.
b)
How to create a user defined exception? Illustrate handling such an exception.
c)
Compare String and String Buffer class.
[5+5+5]
6.a)
What are the sources for action events? What methods of the Action Listener interface
have to be over written to handle action events? Explain with an example.
b)
Write a program to handle mouse events.
[8+7]
7.a)
Describe model-view-controller architecture.
b)
Write a program to create a JFrame for student registration to a technical event using
swing components.
[8+7]
8.a)
Explain life cycle of an applet.
b)
How to execute an applet?
c)
Write a program to create multiple threads using suitable methods.
[5+5+5]
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This post was last modified on 17 March 2023