In the above code, we have created a Map named numbers. Once we import the package, here's how we can create a map. In Java, we must import the package in order to use Map. The Map interface is also extended by these subinterfaces: These classes are defined in the collections framework and implement the Map interface. In order to use functionalities of the Map interface, we can use these classes: Since Map is an interface, we cannot create objects from it. Hence we can access keys, values, and associations individually.
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