What does an "interface extends interface" relationship look like in UML?

Posted by Martin Doms on Stack Overflow See other posts from Stack Overflow or by Martin Doms
Published on 2010-04-22T22:38:03Z Indexed on 2010/04/22 22:43 UTC
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extends-relationship

In Java it's perfectly legal for an interface to extend an interface. Does this relationship in UML look like an "extends" relationship (solid line, closed, unfilled arrowhead) or an "implements" relationship (dotted line, close, unfilled arrowhead)? I can't seem to find an example of this relationship either online or in Fowler's book.

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