B.C.A. (Semester (CBCS) Examination Nov/Dec-2018
CORE JAVA
Time: 2½ Hours Max. Marks: 70
Instructions: All Questions are compulsory.
Figures to the right indicate full marks.
Q.1 Choose correct alternatives. 14
Which is the super class of all java classes?
Class Object
System JVM
JDBC stands for Java Database Connectivity.
True False
a process of storing object contents into a file.
serialization de-serialization
synchronization none of these
False statement about final keyword in java.
Value of final variable cannot be changed once initialized.
Final Method is inherited but we cannot override it
If you make a class final then you cannot extend the class
Constructor can be declared as final.
is a super class of Frame.
Panel Applet
Component JFrame
In java, try followed multiple finally blocks.
True False
Which exception is raised when access illegal index of String?
ArraylndexOutOfBounds NullPointer
StringlndexOutOfBounds IllegallndexAccess s
Which of these, keyword must be used to inherit a class?
super this
extent extends
Which of these events will be generated if we close a frame?
ActionEvent WindowEvent
ComponentEvent AdjustmentEvent
10) Which of these, class is used to read a file in the form of byte sequence.
FilelnputStream FileOutputStream
FileReader FileWriter
11) statement is used to call the procedures and functions.
Simple PreparedStatement
CallableStatement All of these
12) Which of these, access specifier can be used for an interface.
private public
protected all of these
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SLR-SH-22
13) Which component is used to compile, debug, and execute Java program.
JRE JDK
JIT JVM
14) What is the process of defining more than one methods in a class
differentiated by method Signature?
Method overloading method overriding
both and none of these
Q.2 Attempt any four of the followings. 08
What is class and object?
What is package?
What is API?
What is operator?
What is Event?
Write short notes on. (Any Two) 06
Multithreading
JVM
Abstract class
Q.3 Attempt any two of the followings:-
Explain structure of Java programming.
Differentiate between the method overloading and method overriding.
Write a program to display given string in a reverse order.
08
Answer the following. (Any One) 06
What is thread? Explain thread synchronization with example.
Explain different types of JDBC statements.
Q.4 Attempt any two of the followings:- 10
What is Listener? And explain ActionListener with example.
Explain access specifires in java.
Write a program to demonstrate that use of keyword.
Answer the following. (Any One) 04
Write a program to check given no is prime or not.(use AWT components
and events)
Explain naming convention of Java program.
Q.5 Attempt any two of the following:- 14
Explain types of LayoutMangers.
What is exception? Explain types of exceptions?
Write a program to store employee information such as eid, ename salary,
designation into emp table(use Type-4) driver.