difference between SPI and API?

Posted by koss on Stack Overflow See other posts from Stack Overflow or by koss
Published on 2010-06-02T01:02:27Z Indexed on 2010/06/02 1:13 UTC
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What is the difference between Service Provider Interface (SPI) and Application Programming Interface (API)?

More specifically, for Java libraries, what makes them an API and/or SPI?

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