Download JNTUH MCA 3rd Sem R13 2022 March-April Java Programming Question Paper

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Code No: 813AQ

R13

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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, March/April - 2022

JAVA PROGRAMMING

Time: 3 Hours Max. Marks: 60

Answer any five questions

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All questions carry equal marks

1. a) Explain constructor overloading with an example.
   b) What is auto boxing in java? Explain with an example. [6+6]
2. a) Discuss about polymorphism with an example program.
   b) Write a program that reads an integer between 0 and 1000 and adds all the digits in the integer. For example, if an integer is 632, the sum of all its digits is 11. [6+6]

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3. Give a brief summary on inheritance with examples.
   Describe the various forms of implementing interfaces. [6+6]
4. Explain how to create, access and import packages with an example program. [12]
5. Discuss the methods available in the Character Streams.
   What is difference between Array List and Linked List in collection framework? [6+6]

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6. Write a program to read a file content and extract words using String Tokenizer class.
   How a hash table can change the iterator? Explain. [6+6]
7. Differentiate between checked exceptions and unchecked exceptions with examples.
   Write a java program to illustrate the usage of try and catch blocks. [6+6]
8. Write a Java program for keyboard events.
   

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   Differentiate between applets and applications. [6+6]

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