The method E get(int index) of the interface list returns the element in the list at the position specified by the index.
An interface in the Java programming language is an abstract type used to describe the behavior that a class must implement. They are like logs. Interfaces are declared with the interface keyword and can only contain method signatures and constant declarations.
An interface is a description of the actions an object can perform. For example, flicking a light switch turns the light on. In object-oriented programming, an interface is a description of all the functionality an object needs to be "X".
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