Core Java - how and when to prevent inheritance?

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Core Java | Question 192 of 492

how and when to prevent inheritance?

Total Answers and Comments: 10

Last Update: May 29, 2008 Asked by: vidhya165

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January 30, 2006 05:06:19

vemodharak

Member Since: September 2005 Contribution: 12

RE: how and when to prevent inheritance?

how to preventing inheritance:by a class declared as final then that calss cannot be inheritedwhen preventing the inheritance:suppose iy ur class no need to reused then only u can declare final .

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January 30, 2006 05:22:22

sbarik

Member Since: January 2006 Contribution: 27

RE: how and when to prevent inheritance?

One can prevent inheritance by declaring a class with keyword final .By declaring a class as final no other class can extend it..

final class Example

{

Code for u r application..

}

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January 30, 2006 05:55:16

vidhya165

Member Since: January 2006 Contribution: 13

RE: how and when to prevent inheritance?

inheritance is prevented using the final method

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January 30, 2006 05:57:09

subhash g.

RE: how and when to prevent inheritance?

should provide the final keyword to class,because final classes are not inherited

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January 30, 2006 12:49:55

tulasi_yl

Member Since: January 2006 Contribution: 1

RE: how and when to prevent inheritance?

Final is Keyword which is used to prevent a class to Extend..when to stop the inheritance is up to u..when u need u'r class not to be subclassed further more then we can prevent inheritance

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February 03, 2006 04:33:38

kiran

RE: how and when to prevent inheritance?

inheritance is prevented when u are sure that your class is a child/leaf and cannot be parent of any other class.U are sure that class is already saturated with functionality and won't be much help by extending it.

how- use keyword 'final'

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March 09, 2006 00:43:31

Dhananjay Khodve

RE: how and when to prevent inheritance?

Please don't put wrong comments here bcoz lots of people read these comments.

You can prevent inheritance by making a final class.

bye

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May 17, 2006 14:50:09

Nagaraju

RE: how and when to prevent inheritance?

if u provide

private access specifier for Constructor, in these case also it will no allow to create a subclass.

and all of us know u can use final keyword before class.

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July 05, 2006 10:27:42

iyck

RE: how and when to prevent inheritance?

If we make Final class we cannot extend, also if we make all the constructor private then we cannot extend that class, is this also prevents inheritence?

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May 29, 2008 11:06:17

#10

vinaymudgil007

Member Since: May 2008 Contribution: 36

RE: how and when to prevent inheritance?

Two ways: -
(1) mark the class as final
(2) make its constructor private -- in this case we will also not be able to instantiate a class from any other class

any doubts, let me know

Vinny

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