This download link is referred from the post: JNTUH MCA 3rd Sem Last 10 Years 2023-2013 Question Papers R20-R09 || Jawaharlal nehru technological university
Code No: 823AD R15
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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MCA III Semester Examinations, June/July - 2018
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JAVA PROGRAMMING
Time: 3hrs Max.Marks:75
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
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5 x 5 Marks =25
1. a) Define autoboxing and unboxing. [5]
b) Define the syntax for creation of inner class. [5]
2. a) Differentiate treemap and hashmap. [5]
b) Define daemon threads. [5]
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3. a) Define the syntax for checkbox with example. [5]
PART -B
5 x 10 Marks =50
4. a) Explain about the following a) abstraction b) encapsulation c) dynamic binding d) inheritance [10]
OR
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b) Write a short note on public, private and protected access specifiers. Explain about copy constructor. [5+5]
5. a) What is a nested class? Differentiate between static nested classes and non-static nested classes.
OR
b) How to define a package? How to access, import a package? Explain with examples. [5+5]
6. a) Discuss various forms of inheritance.
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OR
b) Give an example for function overloading and explain. [5+5]
7. a) Illustrate with an example the usage of TreeSet and TreeMap classes.
OR
b) Differentiate vector and arraylist with examples. [5+5]
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8. a) Explain collection frame work with examples. [10]
9. a) What is meant by user-defined exceptions? Demonstrate with example.
OR
b) Explain the procedures to create a new thread. [5+5]
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10. a) What is an exception? What are the benefits of exception handling?
OR
b) Explain with suitable example java programs the following: 1) Rethrowing an exception. ii) Method Specifying exceptions. [5+5]
11. a) Explain delegation event model.
OR
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b) Write a JAVA program for handling key events. [5+5]
12. a) Write a JAVA program that works as simple calculator. Use a grid layout to arrange buttons for digits and for the +, -,*, % operations. Add a text field to display the result. [10]
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This download link is referred from the post: JNTUH MCA 3rd Sem Last 10 Years 2023-2013 Question Papers R20-R09 || Jawaharlal nehru technological university