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fall
2016
Bca4020
1 Explain any
five features of Java.
Answer: Features of Java
Java defines data as objects with methods
that support the objects. Java is purely object-
9
2 Describe main
() method in Java. What are the rules for writing a main () method?
Answer: In a Java application, you
may have many classes. Within those classes, you may have many methods. The
method that you need to execute first should be the main() method.
Syntax for the
main()
3 Differentiate
between packages and Interfaces.
Answer: To create a package is quite easy: simply include a
package command as the first statement in a Java source file. Any classes
declared within that file will belong to the specified package. The
4
What are Applets? What are the restrictions of Applets? Describe about applet
class. 2+3+5 10
Answer:
What
are 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
5 Compare JDBC
and ODBC.
Answer: JAVA Data Base Connectivity (JDBC)
The JDBC API (Java Data Base Connectivity
Application Program Interface) can access any kind of tabular
6 Describe
about:
a) Swing
b) JFC
Answer: a) Swing is the
next-generation GUI toolkit that Sun Microsystems created to enable enterprise
development in Java. By enterprise development, we mean that programmers can
use Swing to create large-scale Java applications with a wide array of powerful
components. Swing
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