Application Programming Interface, allow external programs to make requests to the one provides such interface. Generally and minimally, the "published" public methods provided, some would even allow...
An application programming interface (API) is a library of functions that a programming language provides for programmers for common tasks like file transfer, networking, and data structures.
If you are referring to the java api, go to http://java.sun.com/javase/6/docs/api/The api is a reference to all class files available in the standard library.The api will list and briefly explain...