M.C.A. (Semester III) (CBCS) Examination Nov/Dec-2018
Science
Java Programming
Time 2½ Hours Max. Marks: 70
Instructions: All questions are compulsory.
Figures to the right indicate full marks.
Q.1 Choose the correct answer. 14
Which of the following keyword is used to refer to member of base class from a
subclass?
upper super
this base
The output of the Java compiler is executed by the
JIT JVM
JMV JTI
Which of the following is a type of polymorphism in Java?
Compile time polymorphism Link time polymorphism
Multiple polymorphism Multilevel polymorphism
declares a class variable that is to be shared among all instances
Instance Static
Void Auto
Which of the following package contain all the Java's built in exceptions?
java.io java.util
java.lang java.net
Abstract keyword does not allow a method to be override in the subclass.
True False
An is an object that is generated when a run time error occurs.
Exception Inheritance
Abstraction All of above
A class may have several constructors and it is called
Operator Overloading Method Overloading
Constructor Overloading Method Overriding
method waits for the thread to terminate.
sleep() isAlive()
join() stop()
10) Java does not support operator overloading.
true false 8
11) Which of the following can be overloaded?
Methods Constructors
Both a and b None of these
12) Which of the following is the type of multitasking?
Process based Thread based
Both a and b None of these
Page 2 of 2
SLR-SN-15
13) Frames are used for display more than one document on the screen.
True False
14) Which keyword is used by method to refer to the object that invoked it?
import catch
abstract this
Q.2 Answer the following. (Any four) 08
Why Java is called platform independent?
What is a Package? What is the use of Packages in Java?
What are the advantages of event driven programming?
List out the characteristics of the static method.
What is Java virtual machine?
Write short notes on. (Any two) 06
Random Access File
Uses of static keyword
Finalize() Method
Q.3 Answer the following. (Any two) 08
Write a java program to illustrate "Constructor Overloading".
Explain priorities of threads.
Explain method overriding with a suitable example.
Answer the following. (Any one) 06
What do you mean by multiple inheritance explain with example?
What are wrapper classes?
Q.4 Answer the following. (Any two) 10
What is Event class? Write a program for mouse event handler.
What is a package? Explain with suitable example.
What is thread synchronization? Discuss with an example.
Answer the following. (Any one) 04
What is role of applet in Java?
Discuss the use of Finalize in Java.
d
Q.5 Answer the following. (Any two) 14
Describe the Delegation Event Model. Explain the Event Sources and Event
Listeners.
Write program to insert record into database and display student information
using preparedStatement
Define and Applet. How is an Applet different from an application?
Describe the lifecycle of an Applet.