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

Determine the types of object oriented programme, Determine the types of ob...

Determine the types of object oriented programme Classes - Prototypes for objects - Definition or a blueprint of a user-defined datatype - Think of it as a ma

Spring mvc, Do you have an expert to do Spring mvc assignment

Do you have an expert to do Spring mvc assignment

I want an idea for final year projects, i m confused what to take as a pro...

i m confused what to take as a project for final year in information tech cn u suggest some of the topic of software

#titleArray to store 10messages of type String.., AskWrite an application t...

AskWrite an application that uses an Array to store 10messages of type String. You will store this Array with 10 messages of your choosing. For example, a message could be “I love

Malformedurlexception and unknownhostexception, When MalformedURLException ...

When MalformedURLException and UnknownHostException throws? Ans) When the particular URL is not connected then the URL throws MalformedURLException and If InetAddress? methods g

What is struts framework, Struts framework is an open-source framework for ...

Struts framework is an open-source framework for producing the web applications in Java EE, based on MVC-2 architecture. It uses and extends the Java Servlet API. Struts are robust

Explain code and document bases, Explain Code and Document Bases ? If ...

Explain Code and Document Bases ? If you don't know the exact URL of the image, but you do know its name and in which it's in the similar directory as the applet, you can use

Write program for queue of cards, A Queue of Cards You are going to par...

A Queue of Cards You are going to parallel the development done in the lesson on inheritance where we constructed some base classes, StackNode and Stack, and derived  Floa

Linked list, i want code for to print prime numbers in the linked list queu...

i want code for to print prime numbers in the linked list queue and stack and array in java programming

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