Should i learn all package in java!java has more of backage inside each package contain class ..how I can learn all that!

Question

Java

Answer 1

Do you learn Wikipedia?
Noooo.....
if you need info, you google.
You should know about 100 packages if you are very experienced.
The rest is googling for packages.
better: stackoverfloating.

Answer 2

No one can possibly learn all the packages in Java (or any other language). Also there is no use of knowing the API of every package. There are thousands of them. What is important is how well you know the language. You can just look up the internet when you need to use a package (that is why each package has an API reference). If you work with the package enough, it will set it your mind.

Answer 3

No need to learn all. Not possible I think.. Read documentations.. Read about must know packages
(ex: java.lang, util, io, about gui, javaFx classes,...) have basic knowledge in all to write enough codes..
Learn more when it required...

Answer 4

of course not, learn only the most commonly used,

Other when you will really need them. But then you can decide if you want to learn concurrency, Swing, Java EE (many packages) or rather Spring. Or if you will be bored you can try what's there.

Answer 5

XXX thanks ♡♡

Answer 6

Jayakrishna🇮🇳 lang,util,io,gui,JavaFX these the most important..and should i learn them at the beginning

Answer 7

Mohammed Ba tis in java don't look at packages. Look at concepts...
lang is default package in java it contains basic classes which help basic programs to run like data types, classes,..
util contains Colloections, Scanner, streams,...
Actually many more, learning a full single package also not possible I think.. Learn main concepts.. About those I added a link in your new question about almost similar question.. Look at that.. Sure will help you that..

Edit:
https://www.sololearn.com/Discuss/2438090/?ref=app