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Question about Mehran's book

 
shaun chen
Greenhorn
Posts: 3
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Hi there:
i have question about "Java Develpoer Exam with J2SE 1.4" book
hope any one can help ..thanks

1- In DVD Sample...Why DVDDatabase class NOT implement DBClient ?
why is DBDbadapter class implements DBClinet ?....
is there difference form 3 situation
-Only DVDDatabase implements DBClient
-Only DBDbadapter implements DBClient
-Both DVDDatabase and DBDbadapter implements DBClient
??

2-In B&S assignments
if i design calss Data implements DB interface
and the Data class just act like DVDDatabase class that
directly operate the file system
is there had some disadvantage ??
Thank for your reply...
 
Max Habibi
town drunk
( and author)
Sheriff
Posts: 4118
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Hi shaun,

I'm having a trouble understanding your question. Can you please phrase it differently, and provide a bit more detail?

Thanks,
M
[ September 23, 2004: Message edited by: Max Habibi ]
 
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