BCA-16
June Examination 2016
BCA Pt. III Examination
Programming in JAVA
Paper BCA-16
Time 3 Hours Max. Marks 100
Note: The question paper is divided into three sections B and C. Write answers as per given instructions.
Section A 10 × 2 20
(Very Short Answer Questions)
Note: Answer all questions. As per the nature of the question delimit your answer in one word, one sentence or maximum upto 30 words. Each question carries 2 marks.
How does JAVA achieve platform independence?
Write the syntax of prefix and postfix increment operator and write the difference between them.
What are the commands used to compile and run the JAVA Programs.
Determine the value of each of the following logical expressions if a b 10 and c 6

a>b a<c

a<b a>c

b>a

b>15 c<0 a>0
242
BCA-16 100 3 (P.T.O.)
BCA-16 100 3 (Contd.)
242
Explain any three string functions used in JAVA.
Explain the difference between do-while statement and
while statement.
Define an abstract class.
(viii) What is the difference between the String and
StringBuffer classes?
How does Java programming language support
robustness?
What is the Java virtual machine
Section B 4 × 10 40
(Short Answer Questions)
Note: Answer any four questions. Each answer should not
exceed 200 words. Each question carries 10 marks.
Explain characteristics of Object Oriented Programming.
Explain Logical (Boolean) operators in JAVA with example.
Write a program to find average of all the numbers stored in
an array.
What is and what are different uses of it? Explain with
example.
Compare and contrast abstract class and interface.
Write a short note on Wrapper class.
Differentiate between checked and unchecked exception.
Write a short note on byte stream and character stream.
BCA-16 100 3
242
Section C 2 × 20 40
(Long Answer Questions)
Note: Answer any two questions. You have to delimit your each
answer maximum upto 500 words. Each question carries
20 marks.
10) What is Swing in JAVA? Explain hierarchy of swing classes.
11) Explain life cycle of thread with an example.
12) Explain types of inheritance with example.
13) What is exception and exception handling? How can we
declare our own exception? Explain.