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if interface & abstract class have same methods & abstract class also not contain any implementation for those methods which one you prefer ?

use abstract class because we implement only requried methods of abstract class but for interface we must implement all methods whether or requried or not

Total Answers and Comments: 6

Last Update: August 24, 2006 Asked by: tulasi

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Best Rated Answer

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Submitted by: srikanthboddu

implementing an interface for a class is very much effective ratherthan extending an abstract class bcause we can extend some other useful class for this subclass

Above answer was rated as good by the following members:
sandeep_14185

October 31, 2005 13:10:45

Mujeeb

RE: if interface & abstract class have same methods & ...

Obviously one should ideally go for an interface.Coz as we all know one can only extend just 1 class where as one can implement as many interfaces as one can.And in case the class under contention has got some threads to invoke or if it is some JFrame kind of class then obviously it would make sense to use the interface.

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November 06, 2005 14:48:46

srikanthboddu

RE: if interface & abstract class have same methods & ...

implementing an interface for a class is very much effective ratherthan extending an abstract class bcause we can extend some other useful class for this subclass

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1 0

Overall Rating: +1

November 06, 2005 22:31:02

Prabakar.Bolla

RE: if interface & abstract class have same methods & ...

5. how can you load DLL files when your java class is loading first time ?

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November 11, 2005 12:47:48

mandyjoshi

Member Since: November 2005 Contribution: 20

RE: if interface & abstract class have same methods & ...

It depends on your design. But if your basic question is if you want to declare method without implimenation (which must be implemented by child) where you will prefer to put. Then answer in Interface.

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November 14, 2005 07:29:02

katam

Member Since: November 2005 Contribution: 7

RE: if interface & abstract class have same methods & ...

abstract class

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August 24, 2006 04:12:08

msarada

Member Since: August 2006 Contribution: 3

RE: if interface & abstract class have same methods & ...

if we want to have all the other properties of the abstract class along with the unimplemented methods then we prefer an abstract class otherwise we go for an interface(in order to have multiple inheritance).

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