Interface - Basic Java Fast (31) | implements, extends
The video discusses the creation of an interface, together with the way we use it to create other classes. An interface can be treated as an object reference type. In this case, downcasting might be required to access the methods of the actual object type. Finally, we see how to derive an interface from another interface.
You'll learn most by trying my code while watching the video.
0:34 - Creation of an interface
12:34 - Interface as an object reference type
16:57 - Downcasting to actual object type
19:47 - Extending an interface
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