Java includes a map interface. A mapping between a key and a value is represented by the util package. The…

Since Java 1.2, HashMap<K, V> class has been part of the Java collection. This class can be found in java.util…

The HashMap class is similar to the IdentityHashMap class. The IdentityHashMap implements the Map interface using Hashtable, and when comparing…

SortedMap is a collection framework interface. It guarantees that the entries are kept in ascending key order. This interface is…