Exception Declaration and the Public Interface

What is the connection between a method , exception declaration ( throw ) and public interface. Does every method has an implicit public interface ?? Is list of thrown exceptions, part of a method’s public interface ?

sagararya wrote:
So, how do we know that some method throws an exception that we have to catch?Via the throws clause.
[http://java.sun.com/docs/books/tutorial/essential/exceptions/index.html]
Just as a method must specify what type and how many arguments it accepts and
what is returned, the exceptions that a method can throw must be declared (unless the
exceptions are subclasses of RuntimeException). Also those that are subclasses of Error need not be declared.
The list of thrown exceptions
is part of a method’s public interface.Ah, now I see what you mean. Where did you read that? I don't recall having ever heard the phrase "public interface" used like that.
The above paragraph is from the book, Osborne_Java, written by James Kussow.. Ok.
Can anybody explain me the 4th line in the above paragraph, starting from "The list of thrown exceptions ... "
The list of thrown exceptions is part of a method’s public interface.
The throws keyword is used as follows to list the exceptions that a method can throw:What part do you not understand? Read the tutorial I linked, and if something is still not clear, ask your specific question.
Personally I think the phrase "public interface" is misleading here. If that's what you're hung up on, don't be. It doesn't mean "public" in the sense of Java's "public" access modifier. It just means the list of exceptions is part of what callers of the method know about it.
EDIT: Oops. Too late.
Edited by: jverd on Jun 25, 2008 8:31 AM

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Exception Declaration and the Public Interface

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