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

Exercise\servletexercise, Ask question # Write a servlet to display a table...

Ask question # Write a servlet to display a table that contains factorials for the numbers from 0 to 10,

Midlet game, do you have example of a simple midlet game ?

do you have example of a simple midlet game ?

I need the answer for this question as code, I earn .... Rs per month. if m...

I earn .... Rs per month. if mobile costs 20% of my earning. I will buy in cash. if costs more than 20%. I will buy in 3 months installments without interest. if costs more than 40

Pebbles merchant, There is a pebble merchant. He sells the pebbles, that ar...

There is a pebble merchant. He sells the pebbles, that are used for shining the floor. His main duty is to take the length of the room’s sides. But he sometimes mistakes doing that

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

What is mixing data types, What is Mixing Data Types? As well as mergin...

What is Mixing Data Types? As well as merging various operations, you can mix and match various numeric data types on the similar line. The program below uses both ints and dou

Prepare simple spring maven task, Prepare Simple spring maven task Proje...

Prepare Simple spring maven task Project Description: We want a very simple delivery for one of our tasks using Spring STS Maven project. This chat does not have UI interf

Describe the benefits of threads, Question 1: a) What is an "Operating...

Question 1: a) What is an "Operating System"? b) Describe the four main computer system components. c) Describe and compare "Parallel Systems" and "Distributed Systems

Describe methods of basic applet life cycle, Describe methods of Basic Appl...

Describe methods of Basic Applet Life Cycle ? All applets have the subsequent four methods: public void init(); public void start(); public void stop(); public void destroy();

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