#94 Map in Java

Check out our courses:

Mastering Agentic AI with Java : https://go.telusko.com/agentic-ai
Coupon: TELUSKO10 (10% Discount)

DevOps Bootcamp: https://go.telusko.com/complete-devops
Coupon: TELUSKO10 (10% Discount)

Master Java Spring Development : https://go.telusko.com/learn-master
Coupon: TELUSKO10 (10% Discount)

For More Queries WhatsApp or Call on : +919008963671

website : https://telusko.com/

Udemy Courses:

Java Spring:- https://go.telusko.com/Udemyjavaspring
Java:- https://go.telusko.com/udemyteluskojava
Spring: https://go.telusko.com/udemyteluskospring
Java For Programmers:- https://go.telusko.com/javaProgrammers
Python : https://go.telusko.com/udemyteluskopython
Git : https://go.telusko.com/udemyteluskogit
Docker : https://go.telusko.com/udemyteluskodocker

Instagram : https://www.instagram.com/navinreddyofficial/
Linkedin : https://in.linkedin.com/in/navinreddy20
WhatsApp : https://go.telusko.com/whatsapp
TELUSKO Android App : https://go.telusko.com/TELUSKOAPP
TELUSKO IOS App : https://apple.co/3SsgmU2
Discord : https://discord.gg/D8hWe9BqfF

In this lecture we will learn:
– Map in collection
– Syntax for the Map
– How to work with key-value pairs in a map?
– Properties of Map in Java
– Difference between HashMap and HashTable

#1
– Map is not an implementation or it does not extend the collection interface. But it is a part of the collection concept.
– Map is a collection of key-value pairs. in this, for every value of an element, a key is associated with it.
– Map itself is in an interface that supports key-value pairs. A class that implements it is called HashMap.

#2
– We can add elements in a map using the put() method that accepts both the key and value of it.
– We can get the value of an element by specifying its key of it in the get() method.
– Keys are unique but values can be repeated. The value of a key can also be updated.
– In a map, keys are in a set while values are in a list.
– We can get all the keys by using the method keySet().
– We can get the value of a key by using the method get() and pass a parameter as a key in the method.
– remove() method is used to delete a particular element or an entity from a map.

#3
– We can also use a HashTable instead of using a HashMap.
– The difference between HashMap and HashTable is that HashTable is synchronized while HashMap is normal.
– If you are working with multiple threads at a time, then it is better to use a HashTable to make it synchronized.

Github repo : https://github.com/navinreddy20/Javacode.git

More Learning :

Java :- https://bit.ly/3x6rr0N
Python :- https://bit.ly/3GRc7JX
Django :- https://bit.ly/3MmoJK6

JavaScript :- https://bit.ly/3tiAlHo
Node JS :- https://bit.ly/3GT4liq

Rest Api :-https://bit.ly/3MjhZwt
Servlet :- https://bit.ly/3Q7eA7k
Spring Framework :- https://bit.ly/3xi7buh
Design Patterns in Java :- https://bit.ly/3MocXiq
Docker :- https://bit.ly/3xjWzLA

Blockchain Tutorial :- https://bit.ly/3NSbOkc
Corda Tutorial:- https://bit.ly/3thbUKa
Hyperledger Fabric :- https://bit.ly/38RZCRB

NoSQL Tutorial :- https://bit.ly/3aJpRuc
Mysql Tutorial :- https://bit.ly/3thpr4L

Data Structures using Java :- https://bit.ly/3MuJa7S
Git Tutorial :- https://bit.ly/3NXyCPu

Donation:
PayPal Id : navinreddy20
https://www.telusko.com