#3 First Code in Java

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In this lecture we will learn:
- Using the VsCode IDE
- How to start VsCode?
- How do we create a project?
- Creating the first java code
- Use of JShell to run small codes
- Steps to compile a code in the terminal
#1
We will start doing coding in the VsCode.
- VsCode includes Explorer, Search, Run and Debug, and Add Extension options in it.
- You can add an extension if you want as per the VsCode recommendation like Extension Pack for Java.
- We will create a project in Explorer.
- VsCode itself has a terminal where you can run commands.
java --version - used to check the version of java
javac --version - used to check the version of java compiler
- java command is used to run the code while the javac command is used to compile the code.
:- How do we create a project?
Project is a very broad term that is used when we create some files and merge these files with libraries.
- We will create a new folder where we store all the files of our course.
:- Creating a first Java file:
-You can create the first java file in a folder like Hello.java.
- .java is an extension of Java files.
#2
Creating our first Java Code to print "Hello World" :
JShell:-
- We have a concept of JShell that is introduced in Java 9 where you can create small codes and perform operations.
- Print is an inbuilt method in Java that is used to print anything and it uses with System.out like:
System.out.print(6);
System.out.print("hello world");
- double quotes are used to print any text.
- a semicolon is required after every statement in Java as per the syntax.
-JShell can't be used for doing projects, it is only useful for experiments or learning concepts.
Two steps to compile any code:
1. Compile the code using the javac command.
javac filename
2. Run the code using the java command.
java classname
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[@user-rr6pi2uc6k]

I saw many comments here about opening the terminal, if you see at 6:16 he is clicking on the terminal which is pinned to the bottom of his screen. Just that.

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[@kaushik_herle]

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[@luqmanraaz4]

i m very new to java so i dont know where you brought that telusko terminal?????????????????????

[@s.abhignah1728]

How???

[@shilpareddy3360]

Same doubt

[@vaishnavithantry2122]

Heree too

[@suneela9758]

his system name is telusuko. that's why it is showing like that.

[@hameheroj4030]

Good question! I needed to check in another tutorials, sad!

[@manikantakantamsetti1350]

Sir how to open a terminal

[@saeednawaz2694]

we are waiting for upcoming videos

[@jhansipriya5006]

how in your vs code only course file is visible in my vs code all files desktop files are shown including the file created in desktop it makes it look clumsy

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[@Telusko]

Yes, correct

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What is the difference between Vs code and eclipse

[@md.shabbirahmadraza9101]

Great ...

[@CodingBirdsOnline]

All good, but is this video cut and merge of older videos, in last video you were using windows, vscode looked different but it is mac now

[@Manohar_85]

Sir I am having a doubt..for printing hello world, you said the code will be System.out.print("Hello World") in jshell. Other than vs code compiler like online programiz what will be the code??

[@varshagowda669]

Ur genius...........❤️❤️❤️

[@crazybadhrigamer2826]

how did you open that terminal sir.....

[@likhitasharma423]

Why am I getting error for exit too...? 8:12

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Sir love u sir

[@gipsondaniel1070]

Sir how you are opening that new terminal .. (For j shell) in windows it's not coming can you pls explain it clearly sir

[@poojasritandalam2470]

Goto terminal and click on new terminal that's it . We can use jshell

[@kaushikReddynarra]

Go to Terminal > New Terminal > Enter "jshell" and press enter

[@user-ll7ri5jg3e]

sir in command prompt java version is not showing its showing only java c version what do sir

[@asifpatel6293]

how he increase the mouse pointer for a whice at 4:30. HOW ?

[@VayuEdit]

how to open jshell

[@not_really9916]

Hello I just start this course.When I type javac Hello.java.It does not show error.

[@Th3Mag1c1an]

if exit doesnt work for you in Jshell try /ex or /exit

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Your course is too good and we are getting it from company but I need it with either intellij or eclipse

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Do you have any course with eclipse or intellij

[@MuhammadMaaz-fg6cs]

unable to initialize device prn

[@jkoushik3515]

@telusko. Hi sir,One query here: jshell is possible via command prompt or terminal. Is it possible in IDE too like Eclipse and intell J. If possible may I know how can we do that??

[@gipsondaniel1070]

Same doubt here🤔

[@shrishtigarg4674]

same iI dont understand where to open jshell

[@sureshbvrm1]

@@shrishtigarg4674 it is easy ...just type jshall in terminal then it will open jshall commands.. promet

[@poojasritandalam2470]

We can use it through terminal itself

[@iNeurons]

Hello sir 👋

[@brokenbeats6750]

How to open jshell...??

[@s.abhignah1728]

Yes...how?

[@pranathireddy7995]

10:00 You forgot to mention how to exit Jshell. Use the command /exit

[@andreas23ds41]

At 10:06 and trying to do this step but it never works how can I do it?

[@soubhagyamishra3902]

Sir its showing package in system does not exist

[@kaushikReddynarra]

S should be upper case in System.out.print(6);

[@user-lt2tz6en3o]

you can explain in simple but you can do more complicated

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Hello sir g

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👍

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Sir why are you uploading java videos on PW skills

[@nazeerahameed4406]

Excuse me sir system package is not exist it shows

[@nazeerahameed4406]

What can I do sir

[@tutturu858]

How to open this terminal in 6:21

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hey, want complete together?

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👍👍👍👍

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Kuch smj nhi aah rha… I am not getting anything in this video

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🖖

[@AntarikshRajkonwar]

12/5/24

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on 3rd episode , 5/24/2024 just to trace myself

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Ham First ham first

[@dimpe5038]

te amo pelado

[@bidhankumar8762]

1st view

[@nazeerahameed4406]

Sir when I compile the code javac hello.java it is showing my PS c/ user