Download JNTUH MCA 3rd Sem R15 2019 December 823AD Java Programming Question Paper

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Code No: 823AD R15

Time: 3hrs Max.Marks:75

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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MCA 111 Semester Examinations, December - 2019
JAVA PROGRAMMING

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.

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PART - A 5 x 5 Marks =25

1. What is Type casting? Describe implicit & explicit typecasting with examples. [5]
2. Why do we need Abstract classes in Java? Demonstrate with suitable example. [5]
3. What is Java Collection Framework? List out benefits of Collections. [5]
4. Illustrate the uses of throw & throws clause. [5]

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5. What are the limitations of AWT? Enumerate benefits of SWING over AWT. [5]

PART -B 5 x 10 Marks =50

1. a) Differentiate between Procedure Oriented Programming and Object Oriented Programming. Explain OOP features in detail.
   b) Write a Java Program to display all even numbers and sum of even numbers from 1 to 100. [6+4]
   OR

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2. a) What is a Constructor? Demonstrate Copy Constructors and Parameterized Constructors with suitable examples.
   b) Enumerate auto boxing and unboxing concepts with an example. [6+4]
3. a) What is Inheritance? Explain different types of inheritance in JAVA.
   b) Write a Java Program for demonstration of final variables, final classes and final methods. [6+4]
   OR

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4. a) What are the benefits of inner classes? Differentiate between inner class and local inner class.
   b) Write a JAVA program for creating a sub package in JAVA. [5+5]
5. a) Differentiate Array List and Linked List with suitable examples.
   b) Describe concurrent collection classes in brief. [6+4]
   OR

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6. a) What is a random access file? Why do we need it?
   b) Create a Random Access file stream for the file “student.txt” for uploading the student information in to the file? [4+6]
7. a) Describe Built-in Exceptions in Java.
   b) Explain nested try statements and multiple catch statements in Java with an example program. [5+5]
   OR

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8. a) What is the difference between multiprocessing and multithreading?
   b) How to start a thread? Write a java program for implementation of multithreading concept. [4+6]
9. a) Describe Event class & Event Listener. Explain about Event delegation Model.
   b) How to handle Mouse Events in java? Illustrate with an example. [5+5]
   OR

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10. Write a program using Java Swing for implementation of given components. [10]
    a) JFrame
    b) JButton
    c) JLabel
    d) JTextField

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