Course Code : FREE IGNOU MCS-024 SOLVED ASSIGNMENT 2018-19 Course Titlle : Object Oriented Technologies and Java Programming Assignment Number : BCA(4)/024/Assignment/2018-19 FREE IGNOU MCS-024 SOLVED ASSIGNMENT 2018-19 Assignment Marks : 100 Maximum Marks : 25%

Last Date of Submission: 15th October, 2018 (For July, 2018 Session)
15th April, 2019 (For January, 2019 Session)

Note: There are eight questions in this assignment which carried 80 marks. Rest 20 marks are for viva-voce. Answer all the questions. Also in your programs give appropriate comments to increase understandability. Please go through the FREE IGNOU MCS-024 SOLVED ASSIGNMENT 2018-19 guidelines regarding assignments given in the Program Guide for the format of presentation.

FREE IGNOU MCS-024 SOLVED ASSIGNMENT 2018-19

BCA 1 SOLVED ASSIGNMENT	BCA 2 SOLVED ASSIGNMENT
BCA 3 SOLVED ASSIGNMENT	BCA 4 SOLVED ASSIGNMENT
BCA 5 SOLVED ASSIGNMENT	BCA 6 SOLVED ASSIGNMENT

Question 1:

(a) What is Object Oriented Programming? Explain advantages of Object Oriented Programming with the help of an example. (5 Marks)

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(b) Explain features of java programming language. (2 Marks)

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(c) Write a program to explain use of Relational and Boolean operators in java. (3 Marks)

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Question 2:

(a) Explain use of super and final keywords in java with the help of examples.
(4 Marks)

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(b) Explain followings in context of java, with the help of examples.
(6 Marks)

i. Class and Objects

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ii. Message Passing

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iii. Garbage collection

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Question 3:

(a) What is static method? Explain why main method in java is always static.
(2 Marks)

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(b) What is inheritance? How inheritance is implemented in java? Create a class
Book and define display method to display book information. Inherit
Reference_Book and Magazine classes from Book class and override display
method of Book class in Reference_Book and Magazine classes. Make
necessary assumptions required. (5 Marks)

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(c) Explain the steps involved in creating a distributed application using Remote
Method Invocation (RMI). (3 Marks)

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Question 4:

(a) What is polymorphism? Explain its advantages with the help of a program.
(4 Marks)

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(b) What is constructor overloading? Explain advantage of constructor overloading
with the help of an example. (3 Marks)

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(c) What is rule of accessibility? Explain different level of accessibility in java.
(3 Marks)

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Question 5:
(a) What is abstract class? Explain situations in which abstract classes are used.
(3Marks)

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(b) What is an exception? Explain haw an exception is handled in Java. Create your
own exception class to handle a situation when age of a person is given in
negative. Make necessary assumptions. (4 Marks)

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(c) Explain how threads are created in java. Write a java program to display threads
priority. (3 Marks)

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Question 6:
( a) What is I/O stream in java? Write a program in java to create a file and copy the
content of an already existing file into it. (4 Marks)

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(b) Create an Applet program to display your brief profile with photograph. Make
necessary assumptions and use appropriate GUI and layout in your program.
(4Marks)

 

(c ) Differentiate between String and StringBuffer classes. Also write a program to
reverse a given string. (2Marks)

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Question 7:
(a) What is need of layout manager? Explain different layouts available in java for
GUI programming. (4 Marks)

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(b) Explain FilterInputStream and FilterOutputStream in detail. (4 Marks)

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(c) Explain File class and its methods. (2 Marks)

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