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A map interface, on the other hand, allows you to store and retrieve values by key as well as iterate through the entire list of values. Map interfaces are slower but they offer greater flexibility in terms of accessing data by key.

We can create a map interface in Java by using the MapView class. The MapView class provides us with several methods that allow us to set up and change the features of our map interface.

Both the data structures have their own advantages and disadvantages. Map Interface is more efficient than HashMap because it uses less memory space, which allows for faster processing.

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