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PROGRAM-BCA(REVISED
FALL 2012)
SEMESTER-4
SUBJECT
CODE & NAME-BCA 4020 - PROGRAMMING IN JAVA
CREDIT-4
BK
ID-B1477
MAX.
MARKS-60
Q1.
Describe about Multi-threading. What is the significance of Java Bytecode? (4+6)
Answer.
Multi-threading
Multithreading is the ability of an application
to perform multiple tasks at the same time. We can create multithreading
programs using Java. The core of Java is also multithreaded.
Q2.
Differentiate Break and Continue statements in Java with example program.(5+5)
Answer.
Break
and Continue statements in Java
Break
statements
The break statement is
used inside the switch to terminate a statement sequence. When a break
statement is
Q3.
Differentiate between packages and Interfaces.(5+5)
Answer.
Packages
and Interfaces
Packages
Java provides a mechanism for
partitioning the class name space into more manageable chunks. This mechanism
is
Q4.
What are Applets? What are the restrictions of Applets? Describe about applet
class.(2+3+5)
Answer.
Applets
An applet is a Java program that
can be embedded in a web page. Java applications are run by using a Java
interpreter. Applets are run on any browser that supports Java. Applets can
also be tested using the appletviewer
Q5.
Compare JDBC and ODBC (5*2)
Answer.
JDBC
and ODBC
Java Data Base Connectivity
(JDBC)
The JDBC API (Java Data Base Connectivity
Application Program Interface) can access any kind of tabular data,
especially data stored in a Relational Database. It works on top of ODBC
(Open Data Base Connectivity) which was the driver for database
connectivity since age old days but since ODBC was implemented in C so
people from the VB background had some problems in understanding the
implementation intricacies. Since JDBC works
Q6.
Describe about Java Beans and BeanBox. (5+5)
Answer.
Java
Beans and BeanBox
Java Beans
JavaBeans is the software
component architecture for Java. It allows constructing applications
efficiently by configuring and connecting components called Beans. The Beans
need to be written and tested with a rich set of
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