Download JNTUH MCA 3rd Sem R15 2018 January 823AD Java Programming Question Paper

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Code No: 823AD

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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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

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PART - A
5 x 5 Marks = 25

1. a) Write a short note on Polymorphism with an example. [5]

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2. b) Explain about packages. [5]
3. c) Write a short on TreeMap. [5]
4. d) Explain about unchecked exception. [5]
5. e) Explain the concept of applets. [5]

PART -B

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1. Explain about various parameter passing techniques with a sample program. [10]
   OR
   Explain different types of constructors in Java. Give suitable examples. [10]
2. Explain about the following:
   

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   a) Inheritance
   b) Member access rules. [5+5]
   OR
   Explain the usage of following concepts with a sample programs
   a) Abstract class
   

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   b) final keyword. [5+5]
3. Explain the following Legacy collection classes
   a) Stack
   b) Vector. [5+5]
   OR
   

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   Discuss in detail the following
   a) StringTokenizer
   b) Scanner. [5+5]
4. Explain about the usage of try, catch and finally. [10]
   OR
   

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   Explain thread life cycle. [10]
5. Discuss about Flow Layout and Border Layout. [10]
   OR
   Write a Java program to demonstrate the key handling events. [10]

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