Map Interface In Java

Uses of Interface javautilMapEntry. A key is an object that you use to retrieve a value at a later date. The Map interface of the Java collections framework provides the functionality of the map data structure. It models the mathematical function abstraction.

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The general hierarchy of the map interface is shown below.

Map Interface In Java. A map cannot contain duplicate keys. Each key maps to a value hence the name map. Contains the collections framework some internationalization support classes a service loader properties random.

MapEntry interface in Java provides certain methods to access the entry in the Map. The putAll operation is the Map Analogue of the Collection. The key must be unique but the values can be duplicate.

An entry represents individual key-value pairs. Thus a Map is an interface that. Each key can map to at most one value.

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Javamadesoeasy Com Jmse Map Hierarchy In Java Detailed Hashmap Hashtable Concurrenthashmap Linkedhashmap Treemap Concurrentskiplistmap Identityhashmap Weakhashmap Enummap Classes