Download JNTUH MCA 3rd Sem R13 2018 June-July 813AQ Java Programming Question Paper

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Code No: 813AQ R13

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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MCA III Semester Examinations, June/July - 2018
JAVA PROGRAMMING
Time: 3 Hours Max. Marks: 60
Note: This question paper contains two parts A and B.
Part A is compulsory which carries 20 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 8 marks and may have a, b, c as sub questions.

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PART - A 5 x 4 Marks =20

1. Give code to demonstrate the use of ‘this’ keyword. [4]
2. How to define and import packages in Java? [4]
3. What is the use of HashMap class? [4]
4. What is the need of thread synchronization? Give suitable example. [4]

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5. Differentiate between applet and application programs. [4]

PART -B 5 x 8 Marks =40

1. What features of Java makes it a robust language? Explain with illustrations. [8]
   OR
   Write a program to read a sentence from the user and search for a given string in this sentence. Use String class methods to display the search results. [8]

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2. What is an interface? How does it differ from abstract class? Explain partial implementation of an interface. [8]
   OR
   Explain various forms of inheritance along with their benefits. Use suitable code segments to support your discussion. [8]
3. Write a program to demonstrate random access file operations. Consider your class students data in that file. [8]
   OR
   

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   Make a comparison of client server communication mechanisms — sockets, datagrams with necessary code. [8]
4. What are the benefits of exception handling? Java uses five keywords for exception handling. Demonstrate these keywords usage. [8]
   OR
   Write a program to create multiple threads and assign different priorities to them. [8]
5. Describe model-view-controller architecture for application development. [8]
   

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   OR
   Write a program to handle keyboard events using delegation event model. [8]

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