Java HashMap is a hash table from Java's Map interface. Its like a collection of key-value pairs. It maps keys to values. It means you can get value by the keys. A HashMap cannot contain duplicate ...

Java has two hash table classes: HashTable and HashMap. In general, you should use a HashMap. While both classes use keys to look up values, there are some important differences, including: A ...

Hashtablethis class has implemented map interface, before using this data structure you should know their internal implementation hashtable class decleration-<p>public class hashtable<k,v> ...