Explain the importance of abstract classes in java, JAVA Programming

Assignment Help:

Question:

(a) Explain the importance of abstract classes in Java with an appropriate example.

(b) Explain what is meant by an interface in Java? Use a simple example to illustrate your answer.

(c) A GUI may contain text-fields, buttons, and other labels. A button usually triggers an event on the GUI. Explain the different processes in registering an event and handling the action performed by the button in Java.

(d) Write the code for a GUI which will allow a user to enter two numbers and then compute the product by clicking on a button. The result can be displayed in a text-field or as a label on the GUI.


Related Discussions:- Explain the importance of abstract classes in java

What does the abstract keyword mean in front of a method, What does the " a...

What does the " abstract " keyword mean in front of a method and a class ?

Program of bug simulation , You will be creating a World that consists of ...

You will be creating a World that consists of ants and doodlebugs. Each time you click the board each bug will do some of the following: move, bread, eat, and starve. Ants will

What is JMS queue, Staging areas that have messages those have been sent an...

Staging areas that have messages those have been sent and are waiting to be read. Note that, contrary to what the name queue suggests, messages don't have to be delivered in the or

Jsp retrive data, how to retrive data in one block from database by click ...

how to retrive data in one block from database by click data link in another block

How to convert string value to number in java, How to convert string value ...

How to convert string value to number in java? While processing user input it is frequent essential to convert a String in which the user enters into an int . The syntax is

Name the common bugs which are not possible in java, Name the common bugs w...

Name the common bugs which are not possible in java Many common bugs and security problems (such as "buffer overflow") are not possible in java. Checks also make it easier to f

Small projects, i am doing java and want projects with solutions to practic...

i am doing java and want projects with solutions to practice more and more

USES OF JAVA PROGRAMMING, WHY WE USE JAVA IN PROGRAMMING INSTEAD OF OTHER P...

WHY WE USE JAVA IN PROGRAMMING INSTEAD OF OTHER PROGRAMMING LANGUAGE

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