Set And Map In Java: Web difference between set and map interfaces. Web the map interface provides three collection views, which allow a map's contents to be viewed as a set of keys, collection of. List implementation classes are array.
It is an unordered collection of. List implementation classes are array. Web the set interface is present in java.util package and extends the collection interface.
Set And Map In Java: Web the map allows a single null key at most and any number of null values. It is an unordered collection of. Web creating, modifying, and iterating through sets and maps in java.