Java Map. The Map is an interface in Java like the List and Set are interfaces of Collection. The class that implements this interface is TreeMap.
Therefore it behaves a bit different from the rest of the collection types. Java - The Map Interface. However this doesnt mean that we cant convert a Map structure into different sequences which then allow us to work in a natural way with the.
A Map is useful if you have to search update or delete elements on the basis of a key.
This proves to be an efficient way of sorting and storing the key-value pairs. The Java Map interface javautilMap represents a mapping between a key and a value. Learn how to combine Java Maps and Streams. The Map interface maps unique keys to values.