2.API (application programming interface) refers to some predefined interfaces (such as functions and HTTP interfaces), or refers to the conventions for connecting different components of a software system.
3. It means that the communication rules between different functional layers of the same computer are called interfaces. Java interface function: beneficial to code specification.
4. The standard term of API is application programming interface (API). API is some predefined functions, the purpose of which is to provide applications and developers with the ability to access a set of routines based on certain software or hardware, without accessing the source code or knowing the details of the internal working mechanism.
5. The English full name of 5.API. The understanding of this definition needs to be traced back to the development history of operating system. When the WINDOWS operating system began to dominate, it was necessary for people to develop applications under the WINDOWS platform.