Download JNTUH MCA 2nd Sem R19 2021 July-August 862AD Object Oriented Programming Question Paper

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Code No: 862AD

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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R19

MCA 1I Semester Examinations, July/August - 2021

OBJECT ORIENTED PROGRAMMING

Time: 3 Hours Max.Marks:75

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Answer any five questions

All questions carry equal marks

1. Discuss the need of object oriented programming paradigm.
2. List the data types supported by Java and give their size. [8+7]
3. How to perform constructor overloading in Java? Explain with an example program.

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4. Write a Java program to count number of words in a given sentence. [8+7]
5. Explain the benefits and costs of inheritance.
6. Demonstrate package creation and accessing with a suitable program. [8+7]
7. How to implement multiple inheritance in Java? Explain with a program.
8. What are the two ways of using ‘super’ keyword?

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9. Differentiate between an interface and an abstract class. [5+5+5]
10. What is an exception? Discuss exception handling in Java.
11. How to create a user defined exception? Illustrate handling such an exception.
12. Compare String and StringBuffer class. [5+5+5]
13. What are the sources for action events? What methods of the ActionListener interface have to be over written to handle action events? Explain with an example.

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14. Write a program to handle mouse events. [8+7]
15. Describe model-view-controller architecture.
16. Write a program to create a JFrame for student registration to a technical event using swing components. [8+7]
17. Explain life cycle of an applet.
18. How to execute an applet?

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19. Write a program to create multiple threads using suitable methods. [5+5+5]

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