Java Interface Tutorial - Learn Interfaces in Java

Published: 12 March 2020
on channel: Code Tech Gyan
91
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In this video you will learn what is an interface and when to use it
Like a class, an interface can have methods and variables, but the methods declared in an interface are by default abstract.
Interfaces specify what a class must do and not how. It is the blueprint of the class.
Interface specifies a set of methods that the class has to implement.
To implement an interface use implements keyword.
An interface in java is a list of variables and methods that you use to make a class by doing class x implements y.

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An interface in java is just an outline for a class. Anything in the interfaces, like variables and methods, has to be in the class that uses it.

Java interfaces can be tricky at first... But SURELY you'll get it :) If you followed along, congrats! You learned by-doing!

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