What is the difference(if any) between Map
and Map.Entry<K,V>
interface and what is the purpose of Map.Entry<K,V>
interface?
The Map
interface describes a data structure that stores key-value entries. The Map.Entry
interface describes the structure of these entries, stores and provides a way of retrieving the associated key and value (dependent on implementation).
These interfaces are implemented by concrete classes that implement the functionality described by the interfaces.
Map docs: https://docs.oracle.com/javase/8/docs/api/java/util/Map.html
Map.Entry docs: https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html
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