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interface problem
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deepesh mathur
Ranch Hand
Joined: Aug 13, 2007
Posts: 39
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hi all,
i am writing this post to ask that:
1.is it necessary for an interface to have an concrete class(non abstract)implementation? what i mean to say is that can we have a source file compiled with only interfaces and it's implementing abstract classes without a non abstract class???
2.is it the same case with a class extending an abstract class???
i.e. is it necessary to give an non abstract class extending an abstract class to compile code correctly???
i know i am a bit confused so kindly help...
 
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marc weber
Sheriff
Joined: Aug 31, 2004
Posts: 11343
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Have you tried this?
Compilation is one thing. Instantiation is another.
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"We're kind of on the level of crossword puzzle writers... And no one ever goes to them and gives them an award." ~Joe Strummer
sscce.org
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deepesh mathur
Ranch Hand
Joined: Aug 13, 2007
Posts: 39
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sorry but actually i can't get you really ...
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Henry Wong
author
Sheriff
Joined: Sep 28, 2004
Posts: 16695
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Originally posted by deepesh mathur:
sorry but actually i can't get you really ...
Basically, Marc is saying... Yes, it will compile. But what are you going to do with interfaces that don't have any implementations?
Henry
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Books: Java Threads, 3rd Edition, Jini in a Nutshell, and Java Gems (contributor)
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subject: interface problem
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