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fall
2015
PROGRAM-
MCA
SEMESTER-4
SUBJECT
CODE & NAME-mca4030 - OBJECT ORIENTED PROGRAMMING
CREDIT-4
BK
ID-B1477
MAX.
MARKS-60
Q1.
Describe about JDK. List and explain any five tools available in JDK.
Answer:
Java Development Kit (JDK)
The Java
Development Kit (JDK) is a product of Sun Microsystems used to develop Java
software and is an extended subset of a Java software development kit (SDK).
JDK consists of the API classes, a Java compiler, and the Java Virtual Machine
interpreter. JDK is used to compile Java applications and applets. JDK includes
tools for developing Java applets and
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 encountered, execution branches to the first line of code that
follows the entire switch statement. This has the effect of "
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 the package. The package is both a naming and a visibility control
mechanism. You can define classes inside a package that are not accessible by
code outside that package. You can also define class members that are only
exposed to other
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 tool
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
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 mechanisms
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