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http://aspose.com/file-tools
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interface and abstract

 
Hendra Kurniawan
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I did an online quiz on java earlier and I got to a question that asked when I should use interfaces and when to use abstract clases. I realize that I never thought much about this. Basically, I use instinct to decide when to use which. I don't really have a golden rule in regard to this principle. can anybody help?
 
Jeff Verdegan
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I agree. Here's the link: http://aspose.com/file-tools
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