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

Relate java with JVM, Relate java with JVM Java performance gets better...

Relate java with JVM Java performance gets better each year as JVM gets smarter. This works, since making JVM smarter doesn't require any great change to the java language, sou

Control graphical user interface elements, Introduction In this assign...

Introduction In this assignment you will use Processing to create some geometric objects and graphical user interface (GUI) elements that Processing itself lacks. Processing h

Statements and operators, Operator Functionality E x...

Operator Functionality E x ample/Explanation = Sets one value equal to another counter=0  Sets the counter to equivale

Dialog window in Oracle by Java stored procedure, Is it possible to create ...

Is it possible to create any dialog window in Oracle in Java stored procedure?

How many kinds of errors can be found during a program, How many kinds of e...

How many kinds of errors can be found during a program development? List them. 1. Syntax errors 2. Semantic errors 3. Run-time errors

Regex , Having trouble with a lab, need to

Having trouble with a lab, need to

Constractar, Create a class HourlyWorker mind: particularHourlyWorker emplo...

Create a class HourlyWorker mind: particularHourlyWorker employee. • Declare two data members named wage and hours of double type with private access. • Implement a parameterized c

Need ios native app developer, Need iOS native App Developer Project Des...

Need iOS native App Developer Project Description: I want someone to help me prepare a simple inventory system. I am not a programmer trying to learn as i go. Skills re

Define array, Define Array ? Indexed collections of variable of similar...

Define Array ? Indexed collections of variable of similar data types or we can say a Set of organized variables of similar type.

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