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After referring to the available API classes and packages, the programmer easily invokes the necessary code classes and packages for implementation.
The APIs help programmers determine class or package functions, parameters and other necessary information.
An application programming interface (API), in the context of Java, is a collection of prewritten packages, classes, and interfaces with their respective methods, fields and constructors.
Similar to a user interface, which facilitates interaction between humans and computers, an API serves as a software program interface facilitating interaction.
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But now we will see how to develop an application which has a graphical user interface using Java.
All the programming goes same as the normal console app which you might have been already familiar with except for the GUI part.
In Java, most basic programming tasks are performed by the API’s classes and packages, which are helpful in minimizing the number of lines written within pieces of code.