programming interface

what is api

API (Application Programming Interface) helps in communication 
and data exchange between two software systems. It is the channel which 
connects two software systems communicate with one another.


An API forms the middle layer of a three-layered application pyramid, 
consisting of a data layer, a server layer and a presentation layer. 
While the data layer is concerned with data storage and the presentation 
layers are concerned with the user interface, the server layer is composed 
of business logic that defines the way for users to interact with various 
functions, features, and information. 

RESTful API ==> plain text, html, xml, json
SOAP ==> more secure, works with only xml

Posted by: Guest on December-04-2020

Interfaces specify what a class must do. It is the blueprint of the class. It is used to achieve total abstraction. We are using implements keyword for interface. Basic statement we all know in Selenium is WebDriver driver = new FirefoxDriver(); WebDriver itself is an Interface. So we are initializing Firefox browser using Selenium WebDriver. It means we are creating a reference variable of the interface and creating an Object. So WebDriver is an Interface and FirefoxDriver is a class.

Interfaces specify what a class must do. It is the blueprint of the class. It is used to achieve total abstraction. We are using implements keyword for interface. Basic statement we all know in Selenium is WebDriver driver = new FirefoxDriver(); WebDriver itself is an Interface. So we are initializing Firefox browser using Selenium WebDriver. It means we are creating a reference variable of the interface and creating an Object. So WebDriver is an Interface and FirefoxDriver is a class. List and Set also interface. You cannot create object in interface

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