Interfaces are a way to achieve abstraction in Java.
An interface is a completely "abstract class" that is used to group related methods with empty bodies:
To access the interface methods, the interface must be "implemented" by another class with the implements keyword. The body of the interface method is provided by the "implement" class.
java.com
On this page of the site you can watch the video online Java Interfaces - Java tutorial - w3Schools - Chapter-37 English with a duration of hours minute second in good quality, which was uploaded by the user w3Schools Tutorials 18 July 2022, share the link with friends and acquaintances, this video has already been watched 436 times on youtube and it was liked by 4 viewers. Enjoy your viewing!