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What is a Interface
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Ramesh Shanmugam
Ranch Hand
Joined: Sep 13, 2004
Posts: 132
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can anyone explain me what is an interface with an example
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Ramesh Shanmugam - SCJP 1.5
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Ernest Friedman-Hill
author and iconoclast
Marshal
Joined: Jul 08, 2003
Posts: 24054
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Moving to Java in General(Beginner).
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[Jess in Action][AskingGoodQuestions]
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Jeroen Wenting
Ranch Hand
Joined: Oct 12, 2000
Posts: 5093
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an interface is a contract.
It tells any class accessing an object what methods and behaviours are guaranteed to be in place in that object without telling anything about the actual implementation of those methods.
Check out the API docs for java.util.List and the implementing classes for some good examples.
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Layne Lund
Ranch Hand
Joined: Dec 06, 2001
Posts: 3061
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Interfaces are a pretty basic principle in Java. I'm quite certain they have been discussed here before. You should use the Search tool to find the previous threads. Also any decent Java text or online tutorial will have much more detail than can be given here.
HTH
Layne
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Java API Documentation
The Java Tutorial
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subject: What is a Interface
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