The interface type
is used to specify methods that classes using the interface must implement. These methods are created with the interface keyword followed by a name and a code block. Their naming convention is the same as for classes, with the first letter of each word capitalized.
interface MyInterface {}
When an interface isn’t nested inside another type, its access level can be either package-private or public, just like any other top-level member.
Interface Members
The code block for an interface can, first of all, contain signatures for instance methods. These methods don’t ...
