Did Java invent interfaces?

Posted by Jordão on Stack Overflow See other posts from Stack Overflow or by Jordão
Published on 2010-05-03T13:47:05Z Indexed on 2010/05/03 13:58 UTC
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interface

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programming-languages

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java

I know about C++ pure virtual classes, but Java went one step further and created a first-class (no pun intended) concept for multiple-interface (not implementation) inheritance, the interface. It's now a staple of major statically-typed languages. Did Java invent the interface concept? Or did it appear in older languages also as a first-class concept?

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