Solved

Java abstract class extending abstract class - do I need to declare abstract methods in 2nd abstract class?

Posted on 2007-11-15
4
491 Views
Last Modified: 2012-05-05
Hi,

I'm writing some Java classes and I would like to have the following structure:

abstract class submittedForm

abstract class submittedFormType extends submittedForms

class formA extends submittedFormType

Question:

A: Is this a valid way to design my code with an abstract class extending an abstract class?

B: If I declare an abstract method in submittedForm, can I wait to implement that method in formA, or do I also need to reference that abstract method in the submittedFormType abstract class as well?

Thanksin advance,
Courtenay
0
Comment
Question by:courtenayt
  • 2
  • 2
4 Comments
 
LVL 24

Accepted Solution

by:
sciuriware earned 500 total points
ID: 20289640
A) valid but may be error prone.
B) not to be repeated in the extended class but implemented in the final class.

;JOOP!
0
 
LVL 1

Author Comment

by:courtenayt
ID: 20289685
Thanks!
0
 
LVL 1

Author Closing Comment

by:courtenayt
ID: 31409337
fast response
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 20289707
:)
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

An old method to applying the Singleton pattern in your Java code is to check if a static instance, defined in the same class that needs to be instantiated once and only once, is null and then create a new instance; otherwise, the pre-existing insta…
Java functions are among the best things for programmers to work with as Java sites can be very easy to read and prepare. Java especially simplifies many processes in the coding industry as it helps integrate many forms of technology and different d…
Viewers learn about the third conditional statement “else if” and use it in an example program. Then additional information about conditional statements is provided, covering the topic thoroughly. Viewers learn about the third conditional statement …
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…

932 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now