MCA-16
June Examination 2016
MCA IInd Year Examination
Programming in JAVA
Paper MCA-16
Time 3 Hours Max. Marks 80
Note: The question paper is divided into three sections B and C. Write answers as per given instructions.
Section A 8 × 2 16
(Very Short Answer Questions)
Note: Answer all questions. Limit to 30 words.
Which inheritance is not supported in Java and why?
What is interface in Java?
What is package in Java?
What is the basic difference between string and string buffer?
Define nested class.
Define garbage collection.
What is wrapper classes?
(viii) What is an applet?
671
MCA-16 200 3 (P.T.O.)
MCA-16 200 3 (Contd.)
671
Section B 4 × 8 32
(Short Answer Questions)
Note: Answer any four questions. Limit to 200 words.
Differentiate between public, private and protected access
specifier in Java.
What is variable? Define scope and lifetime of a variable.
What is final variable, final method and final class?
Define try, catch and finally block.
Write a simple program to take input from user and display it.
Write a program which uses the concept of class and object.
Define an abstract class. Explain its purpose.
What is swing? Describe any three component of swing.
Section C 2 × 16 32
(Long Answer Questions)
Note: Answer any two questions. Limit to 500 words.
10) Explain all the top-down and bottom-up control statement
with suitable program.
11) Write short notes on the following:
Multilevel inheritance
Copy constructor
Two tier client sever model
Java packages
671
12) Explain the following layout managers in Java:
Border layout
Flow layout
Grid layout
Card layout
13) Explain any five adapter classes and their listener interface.