HashMap Methods in Java | get | put | remove | clear | size | containsKey

Pubblicato il: 19 luglio 2024
sul canale di: Code Crush

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HashMap Methods in Java | get | put | remove | clear | size | containsKey | Java Collection Framework

#hashmap #map #size #java

What is Hashmap -    • HashMap In Java | Put Method Hashmap | Jav...

In this video, we delve into the essential methods of the HashMap class in Java. HashMaps are crucial for storing and managing key-value pairs efficiently. We'll explore:

How to create and initialize a HashMap
Adding and updating entries with put()
Retrieving values with get()
Removing entries with remove()
Checking for keys with containsKey()
Getting the size of the HashMap with size()
Clearing all entries with clear()

Iterator
Collection
List
Set
Map
ArrayList
LinkedList
HashSet
LinkedHashSet
TreeSet
HashMap
LinkedHashMap
HashTree
HashTable
Queue
DeQueue

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