What is an abstract class in java, JAVA Programming

Assignment Help:

Question:

(a) Java does not support multiple inheritance but does provide the concept of ‘interface'. Explain how interfaces can help a programmer to implement multiple inheritance in their programs. Explain with suitable Java examples.

(b) What is an abstract class in Java? Describe the importance of implementing these classes in programs. Illustrate with an example of your own.

(c) Show the Java approach to event processing by explaining how event handling works in Java. Use an example to support your answer.

(d) Describe what is a ‘Listener' in Java using an appropriate example?


Related Discussions:- What is an abstract class in java

Web-based client program, Why are JSP pages the preferred API for creating ...

Why are JSP pages the preferred API for creating a web-based client program? Because no plug-ins or security policy files are required on the client systems (applet does). Also,

What are logic- or time-bombs, What are Logic- or Time-Bombs ? It execu...

What are Logic- or Time-Bombs ? It execute the payload while predetermined event occurs. For instance use kind's particular phrase and particular data is reached.

JAVA Cipher Program, Cryptography, the study of secret writing, has been ar...

Cryptography, the study of secret writing, has been around for a very long time, from simplistic techniques to sophisticated mathematical techniques. No matter what the form howeve

What is alternate text, What is Alternate Text ? The APPLET element ca...

What is Alternate Text ? The APPLET element can have an ALT attribute. An ALT attribute is used through a browser which understands the APPLET tag but for some purpose cannot

Regex , Having trouble with a lab, need to

Having trouble with a lab, need to

Need to modify joomla component, Project Description: I want to modify J...

Project Description: I want to modify Joomla component. Now there is Akeeba subscription component on this site. It works and the whole thing is fine, but there is no "teaser

Preventing applet based social engineering attacks, Preventing Applet Based...

Preventing Applet Based Social Engineering Attacks To help avoid this, Java applet windows are specifically labeled as such along with an ugly bar that says: "Warning: Applet W

What is color in awt, What is Color in AWT? Color is a class in the AWT...

What is Color in AWT? Color is a class in the AWT. Individual colors such as red or mauve are examples of this class, java.awt.Color. Be sure to import it if you want to use ot

Need software protection with data files encryption, Need Software protecti...

Need Software protection with data files encryption Project Description: I am use to Chinese dongle sense lock clave 2, i need to prepare to dongle encryption tool same appli

I need the answer for this question as code, I earn .... Rs per month. if m...

I earn .... Rs per month. if mobile costs 20% of my earning. I will buy in cash. if costs more than 20%. I will buy in 3 months installments without interest. if costs more than 40

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd