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

Java developer with spring framework prerequisite, Java developer with spri...

Java developer with spring framework prerequisite from anywhere Let me know that you have proven experience in java with spring frame work. Send some sample data and provide inf

How would you interact between servlets and applets? , We may use the java...

We may use the java.net.URL and java.net.URLConnection classes to start a standard HTTP connection and "tunnel" to a Web server. The server then gives this information to the s

How instant messaging works explain their process, How instant messaging wo...

How instant messaging works? Write the steps involved in this process? The Instant Messaging services available permit us to manage a list of people (contacts) that we interact

Relational mapping integration module, What are object/relational mapping i...

What are object/relational mapping integration module? Ans) Spring also supports for using of an object/relational mapping (ORM) tool over straight JDBC by giving the ORM module

Garbage collection model, This assignment is about experimenting with the J...

This assignment is about experimenting with the Java runtime system's garbage collection model, and comparing it with the C++ manual memory allocation model. Below is the Garbage J

Android app implemented on a website, iPhone /Android app implemented on a ...

iPhone /Android app implemented on a website Project Description: I need someone to implement an iPhone/Android app onto a website page, So users can be able to use the Ap

Bluej program, program to find the frequency of a digit in a number

program to find the frequency of a digit in a number

Digital clock, how to Using polymorphism to write a program to display digi...

how to Using polymorphism to write a program to display digital clock?

Program to abstract syntax tree constructed, Please submit your answers    ...

Please submit your answers     In this homework, we are going to generate Java Virtual Machine codes by processing the abstract syntax tree constructed from the parsing process

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