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

Explain about java sdk, Java SDK is not so comfortable with people used to ...

Java SDK is not so comfortable with people used to command line interpreter. IDEs contain compilers, editors, debugging facilities, drag and drop methods, etc. This compiler strive

Explain about the static classes, Explain about the Static classes A  ...

Explain about the Static classes A  class  can  have  static  variables    and    methods.    Static    methods    and    variables    are  associated  with  class  itself  an

Need facebook developer, Project Description: i am seeking an experience...

Project Description: i am seeking an experienced Facebook page builder,fanpage builder, Header module Navigation menu module HTML module Widget module Image modul

Need the following code for double variables instead of int, Need the follo...

Need the following code in double var instead of integer. import javax.swing.*; public class arrayVar { public static void main (String[] args) //This is our main method prompt

Sequence diagrams , Sequence diagrams are communication diagrams which deta...

Sequence diagrams are communication diagrams which detail what messages are sent and when. The sequence diagrams are placed according to time. The time performs as you move from to

Write a short note on image preloading process, Write a short note on image...

Write a short note on image preloading process? The primary use of image preloading procedure is to download the image within the cache before it is actually required to displa

Application for android studio, 1- I need application used android studio w...

1- I need application used android studio with source code and all file . same this application : 2-">https://play.google.com/store/apps/details?id=com.magnetic.openmaps&hl=en 2

Explain the phase compile- java program development, Explain the phase Comp...

Explain the phase Compile- Java Program Development In Phase 2, programmer gives the command javac to compile the program. Java compiler translates the java program into byte

Illustrate an example to define a student class, Task - Defining a Student ...

Task - Defining a Student class The below illustration will explain how to write a class. We want to write a "Student" class which - should be able to store the below charac

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