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

Servlet, i nedd servlet basics

i nedd servlet basics

Code for calculatr, how i made a calculator in java plz tell help me

how i made a calculator in java plz tell help me

Plug-in for adobe after effects, Plug-in for Adobe after Effects Project...

Plug-in for Adobe after Effects Project Description: We are seeking software engineers to create a plug-in for Adobe after Effects (CS4 and above) that allows 3D extrusions f

Simon game project, i''m trying to make a code to make the simon says game ...

i''m trying to make a code to make the simon says game and i can''t figure it outt

Program to change base system, Write a program called BaseConverter that pr...

Write a program called BaseConverter that prompts (asks) the user for a base 10 number and another number, between 2 and 10 inclusive. This second number is the base to which to co

Java program to calculate the commercial value of the stamps, You are asked...

You are asked to write a Java program to calculate the commercial value of the stamps owned by a philatelist. Each philatelist has a name and a collection of stamps. The stamps can

the file system simulator , • Study and enhance the File System Simulator ...

• Study and enhance the File System Simulator - See the FS_sim slide deck • New features - blockinfo - a new application that displays the information about the blocks in the file

Annotation or attribute oriented programming? , Annotation or Attribute ori...

Annotation or Attribute oriented programming There are two types of code generation processes. Passive code generation: is template driven . Input process are used in mo

What is aop alliance, AOP Alliance is an open-source project whose goal is ...

AOP Alliance is an open-source project whose goal is to promote adoption of AOP and interoperability between different AOP implementations by describing a common set of interfaces

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