MCS024 : Object Oriented Technologies & Java Programming | June 2023 Paper Solution

MASTER OF COMPUER APPLICATIONS (MCA) (REVISED)/ BACHELOR OF COMPUTER APPLICATIONS B.C.A. (REVISED) 

Term-End Examination June, 2023

MCS-024: OBJECT ORIENTED TECHNOLOGIES AND JAVA PROGRAMMING

[Time: 3 Hours  | Maximum Marks: 100 | Weightage: 75% ]

Note: Question No. 1 is compulsory. Attempt any three questions from the rest.

Question 1. (a) Explain the basic features of object oriented programming language.

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Question 1. (b) Why is Java called machine independent language? Explain the functionality of JVM.

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Question 1. (c) Differentiate between constructor and method, give example for both.

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Question 1. (d) What is an abstract class? Explain the use of abstract class with an example.

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Question 1. (e) What are cookies and session variables ? Briefly discuss the utility of both.

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Question 1. (f) Explain the different steps in the life cycle of an applet.

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Question 1. (g) Discuss the relationship between data abstraction and encapsulation.

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Question 1. (h) Explain the usage of container in Java Applet and Servlet.

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Question 2.(a) Explain how exception handling is performed in Java. Briefly discuss the concept of checked exception and unchecked exception, with an example of each.

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Question 2. (b) Briefly discuss the concept of listener in Java. Write a program implement mouse motion listener, support your program with suitable comments.

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Question 3.(a) What is string class? How is it different from String Buffer class? Write a java program to find the length of a given string.

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Question 3.(b) What is servlet? Explain how session handling is programming. performed in servlet

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Question 3.(c) What is an Interface? Write a java program to show how a class implements two interfaces.

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Question 4.(a) What is RMI in Java ? Write the steps to create stub and skeleton.

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Question 4.(b) Write a java program to create a volume class. Derive cube and sphere classes from it. Define constructor for these three classes.

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Question 4.(c) What is Synchronization? Explain how methods are synchronized in Java, with the help of an example.

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Question 5. Write short notes on the following:

(a) Dynamic Binding
(b) Stream Tokenizer
(c) JDBC Drivers
(d) Function Overloading

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