OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.

 


Help: OASIS Mailing Lists Help | MarkMail Help

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [xml-dev] Java: interface methods with same name and signatur e



Ron,

If you take a look at section 9.4.2 Overloading in
ftp://ftp.javasoft.com/docs/specs/langspec-2.0.pdf you should find your
answer.

The way I read it is that it is OK to implement interfaces that have methods
with the same signature, the only thing is you can have only a single
implementation of the method. Basically, even if you cast on the interface
name it will end up calling the same method in the implementation.


Greg

-----Original Message-----
From: Ronald Bourret [mailto:rpbourret@rpbourret.com]
Sent: Friday, October 26, 2001 2:34 PM
To: xml-dev
Subject: [xml-dev] Java: interface methods with same name and signature


Sorry about the non-XML topic...

Suppose I have two interfaces, both of which have a method with the same
name and the same signature. For example:

   public interface foo1 {public void foo()}
   public interface foo2 {public void foo()}

Now suppose I want a single object to implement both interfaces:

   public class fooimp implements foo1, foo2

Calling methods shouldn't be a problem, as I can cast:

   fooimp fi = new fooimp();
   (foo1)fi.foo();
   (foo2)fi.foo();

But what is the syntax for actually implementing the methods? This is
clearly a problem:

   public class fooimp implements foo1, foo2
   {
      public void foo() {...} // from foo1
      public void foo() {...} // from foo2
   }

I couldn't find anything in the Java spec...

Thanks,

-- Ron

-----------------------------------------------------------------
The xml-dev list is sponsored by XML.org <http://www.xml.org>, an
initiative of OASIS <http://www.oasis-open.org>

The list archives are at http://lists.xml.org/archives/xml-dev/

To subscribe or unsubscribe from this elist use the subscription
manager: <http://lists.xml.org/ob/adm.pl>