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

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Code No: 823AD Rl 5

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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MCA III Semester Examinations, August - 2017
JAVA PROGRAMMING
Time: 3hrs Max.Marks:75

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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 x 5 Marks =25

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1. a) What are the primary motivational factors for Java development? [5]
2. b) Differentiate between class, interface, abstract class. [5]
3. c) Compare HashSet and HashMap collection classes. [5]
4. d) What are the benefits of exception handling? [5]
5. e) What are the various sub classes of JToggleButton? [5]

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PART -B
5 x 10 Marks =50

1. 2.a) Demonstrate the usage of ‘this” keyword.
   b) How does Java support abstraction? Give suitable code. [5+5]
   OR
   

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   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]
2. 4.a) Differentiate between method overloading and method overriding.
   b) How to prevent inheritance of a class? [5+5]
   

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   OR
   5.a) What is a nested class? Is it different from inner class?
   b) Explain access modifiers applicable to packages. [5+5]
3. 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
   

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   7. Write a socket program to establish connection and communication between a server and a client using TCP/IP sockets. [10]
4. 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?
   

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   b) What is a daemon thread? What is its purpose? [5+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 using delegation event model. [10]

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