Map.Entry in java

Published: 23 September 2019
on channel: java full stack training

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Map.Entry interface enable you to work with a map entry. Recall the entry set() method declared by the Map interface returns Set containing the map entries. Each of these set elements is a Map.Entry object Map.Entry is generic and is declared like this
interface Map.Entry K,V
Here K specifies the type of Key and V specifies the type of Value.

HashMap class extends AbstractMap and implements Map interface. it uses a hash table to store the map. This allows the execution time of get()and put() to remain constant even for large sets. HashMap is a generic class that has this declaration.

class hashMap

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