Java collection -- implementation classes of Map interface HashMap, LinkHashMap, TreeMap and Properties

HashMap class 1. HashMap class overview HashMap is the most frequently used implementation class of Map interface, which allows the use of null keys and null values. Like HashSet, the mapping order is not guaranteed. The Set composed of all keys is Set: unordered and non repeatable. Therefore, the class where the key is located sho ...

Posted on Wed, 22 Sep 2021 12:56:42 -0400 by ToeBee