#4 How Java Works

[@alessandrocupaiolo6859]

I work as Java developer since 2 years ago, and no one told me everything i watched in this video. Really thank you :)

[@aeroabrar_31]

This is the explanation which every java developer needs, Kudos and Thank you sir.

[@satyakanna4220]

This is the Marvelous Explanation sir Please provide Interview Questions Asked For Java Developers.

[@balive053]

Thanks for the great and clear explanation! I didn't know this about Java when I started learning it.

[@hari-7872]

Superb sir Anyone in 2024❤️

[@Davetonacademy]

Here bro

[@priyanshsrivastava3443]

yepp

[@triviastuffandtechintelugu3614]

yepp!

[@havory6621]

If VS Code gives you an error of the type "package system does not exist" make sure to have the "s" in "system" to be capital letter, alongside the first letter of string it also must be a capital letter.

[@gayathriyendru2147]

If I ever learned anything in the Java world it is because of you sir!! Thankful forever!!❤

[@funatsun]

hii bro,i got an error in javac hello.java i checked the code also...and i didnt got hello.class? at 8:42

[@SalakotPhilippines]

Thank you Navin Reddy my forever teacher since 2015

[@mukeshmgm7335]

Greatest Tutorial Ever In KZbin.....

[@NoahMichaelZ]

Hello, I'm From france and I'm learning java online and I found your channel when I first search for java videos. I watched all your java videos and thank you so much for these videos, I'm really grateful to you.

[@JEEVI-y2k]

France 🇫🇷????

[@NoahMichaelZ]

@@JEEVI-y2k quoi ? qu'entends-tu par France ?

[@NoahMichaelZ]

@@JEEVI-y2k ah i get what you meant by that. yes I'm from france. you also???

[@funatsun]

​@@NoahMichaelZ hii bro,i got an error in javac hello.java i checked the code also...and i didnt got hello.class? at 8:42

[@shariqsaiyed8001]

Literally, The way you explained !! I'm your fan!!

[@chiltoncharles]

The explanation quality of this video is outstanding, thank you so much my brother, may god bless you

[@devendraverma1356]

hi bro can you please tell me why he not used package in his code and his code still running ?

[@AbdoulayeZakaria-u3y]

Wow, that's the type of instructors that all beginner in programming need

[@adhmherr9864]

I get always error even when i wrote every things correct 😢

[@traveltribethings1336]

you explained this so beautifully! The most best part about your videos are unline others, you always try to give in depth knowledge on what happens in the backend which makes it more easier to learn.. I havent done coding in my entire life, but your videos are mind blowing!!! Keep explaining logic and concept wise..Great work!

[@_I_like_kebeb]

you are amazing, I have been learning Java for 1 year but now someone explained it correctly :D

[@Dilluded]

You're the best Java instructor, thank you!!

[@roshnimandarapu5097]

This is a WOW explanation. Thanks sir!

[@actandrepeat]

In summary: The compiler compiles Java source code into byte code and the byte code (machine code) is then read by the JVM, processed and converted into instructions for the respective OS to understand.

[@bandisanjana634]

Thanks! 😊

[@IMMWICKED]

Bro needs to pin this comment bc the beginning was a bit hard for me to follow but this comment really helped everything click together. Thank you!

[@konradbartczak6083]

Cool content. I subscribed. Up to java 8 we could only install JRE to run purpose. But for java 9 everyone has to install the whole JDK.

[@TanayKarn20147_alt]

One thing that I really like in this series is that he doesn't say that you cannot do programming on a phone, instead he encourages mobile users to program.

[@BuiHoangucAnh-tn5fz]

This is the explanation which every java developer needs, Thank you sir.

[@art19kp04]

Very sharp explaining salute 🫡 sir

[@abdulkarimyahuza6596]

Sir, thank you for the explicit explanation❤❤❤❤

[@robertjr8205]

This was the greatest explanation ever! Thank you!

[@shishirgupta5978]

Nicely explained! Good job...

[@swathim3988]

Best teacher❤

[@techysam-bl9mk]

Beautifully explained - Kudos

[@akashatote9830]

Thank you so much sir... really your explanation too good easily any one can understand...

[@sivaranjanis9019]

Great Navin. Very Useful . Thank you for such wonderful video

[@fadisalameh3368]

super explaining I think, you are the best java teacher

[@yitingchen8278]

JDK contains JRE, and JRE contains JVM. JVM need to build for particular OS.

[@devotionalsongs5673]

This is amazing I am able to understand java now!

[@tiagosansaodev]

Congratulations, your explanation is the best! Keep going.

[@brunomiguel6603]

Hi @Telusko, I hope you are doing well. First of all, thank you for this contents, however I have got confused when explained about the main method… when we use JSE we have a main method but in Jakarta we don’t have the main verb because is web application…

[@girlwhocodesandlifts]

Hi, is there any way I can see these things(JRE, JVM etc) in action? Any way to know what's happening at JRE/JVM level when I run a java program/application?

[@PalGanesh75]

Different functions are available inside folders of jdk/conf These functions execute all these

[@faaizuddin5090]

Assalamualaikum sir, how you are ? I'm from Pakistani I watch your all video . Sir kindly upload advance java courses which based on industry requirements.

[@mohamedabdullah3801]

Walaikum salam

[@devilsingh6052]

Jai Shree Ram 🚩🚩🚩🚩🚩

[@abhisera3769]

Love from India bro

[@abdikhabirmohammed455]

Thank very much for your simple and understandable explanation, indeed, it's wonderful

[@lionarpotter9535]

Sir after running Java code (Hello.java) successfully,the byte code( Hello class) is not appearing in left top corner sir why and bcoz of that it shows no class name as hello world

[@ajitkumarsaha4074]

Mine also not appearing but when appeared..it printed hello world but after that whatever I want to print it is printing only hello world

[@mohammedabdulkarim9878]

Facing same challenge like yours..

[@aashrithreddy4921]

Mee too

[@hondaxblade2127]

I think the file exist but it is hidden by vs code, check it in vs code settings

[@mohammedabdulkarim9878]

@@hondaxblade2127 Okay, lemme give a try..

[@pranavsharma5395]

sir kya badhiya bataya hai apki english bhi bahut simple hai sab samjh aya or appne jo bataya mujhe bahut acha laga abb mai bhi placement lepaunga thanks 🙏✨

[@Fredy-v3n]

In my research I found: a 'static block' executing before 'main' method, So when we compile the code to byte and run through the JVM, the jvm look for main method or static block first?

[@vivan1310]

bro I love this man so much it is not funny

[@navaneethkp8691]

8:30 no new file is created in my system after compiling . Why ?(btw jdk version is 22)

[@priyanshuanand_papk]

If no error come during compile,in your current directory, file will be saved by class name.class

[@naseddinoufallah628]

i like your explanation , my problem is english i will improve my english and my talk , for hear you again

[@Elevated2363-l8z]

This is amazing you have taught me so much

[@roshni4022]

execellent explanation sir

[@pavi.R]

If I type `javac hello.java` and press enter, my class file is not created instantly. However, if I run the program and then type `javac hello.java` again, I can see the class file is created. Why isn't it created instantly as shown in the video?

[@adhmherr9864]

I have same problem here 😢

[@akankshamishra1262]

Thank you so much, your explanation is very good.

[@alejandrog5529]

Amazing, greetings from Colombia

[@durgaraoponnuru17]

Hi Sir, Thanks for your videos. I have a doubt, how can system have JRE and JVM without installing JDK. As per my knowledge, when we download and install JDK, JVM and JRE will be created.

[@saintjonny]

correct, i also read this, jvm comes with the jdk not preinstalled with the os

[@thanhtran-wy5wr]

hello sir, where can i take the exercises to improve my skills? thank you so much 🥰

[@omagency2771]

sir very nice explanation ,thank you sir

[@higiniofuentes2551]

Thank you for this very useful video!

[@bakytsheishenbekov3468]

Thank you Sir!

[@uday2159]

1:48 I don't understand what u are talking about Later, I understand it🙂

[@darshanjain5876]

i f VS Code gives you an error of the type "package system does not exist" make sure to have the "s" in "system" to be capital letter, alongside the first letter of string it also must be a capital letter.

[@Tanya-v9l]

Hi, I have some some doubts how to ask?

[@FrancesObeleEbubechukwu-yz7po]

Very good sir 💯✨

[@babugovindaraj6411]

Ur great sir🎉

[@Jelvix]

Thank you for this video! It's very helpful, especially for beginners. We also created a video on a similar topic, but we talk about the key differences between Java and Python

[@codeblooded03]

hi sir when i give the run command it says " Error: Main method not found in class hello2, please define the main method as: public static void main(String[] args) or a JavaFX application class must extend javafx.application.Application " please tell me how to solve it.

[@devrajdasari5546]

The error is because you can't run a Java file without main method. Public static void main(String[ ] args) { } Note : we can compile (javac) the Java code without main method, but we can't run the Java code without main method

[@CoffeeGuy2327]

Hi, I was trying to run the code using javac Hello.java but I get this error unnamed classes are a preview feature and are disabled by default. public static void main (String a[]) (use --enable-preview to enable unnamed classes) Anyone knows how to fix this? Just beginning to learn coding through this channel. Thanks!

[@CoffeeGuy2327]

*UPDATE* All goods now. I was able to search it up in google. I just have to enable preview it. Thanks!

[@NiharikaENneha]

How to fix this?

[@zainabkhan5059]

Save the code before compiling the code press ctrl+s

[@HappyMishra-i7n]

Sir in windows it is showing error

[@ishitadas]

Hi Sir, I have a problem. My class is not getting created and I am unable to find why it is Can you please help me

[@adhmherr9864]

I have same problem here. 😢

[@zainabkhan5059]

Save the code before compiling the code press ctrl+s

[@abhinaybandi44]

Umm i got a problem. I could not the extra file after typing javac Hello.java

[@adhmherr9864]

😢 same

[@abhinaybandi44]

@@adhmherr9864 first click ctrl+s then try

[@jatinasthana5318]

sir is jvm is pre installed with the os of any computer or when we download java (from oracle ) then jvm comes with it?

[@sandrawanja1793]

It doesn't come preinstalled but rather it comes after installing java

[@manishsrivastava5611]

Hi Sir , my byte code "hello.class was not created. Plz explain

[@bhanuprakash5703]

You need press ctrl + s in order to save the code you have written in the file. then execute javac command. hope it works 🙂

[@bandarurahul4144]

​@@bhanuprakash5703thankyou

[@pranavgarg3301]

​@@bhanuprakash5703 thanks it worked

[@nubgaming9776]

public static void main(String[ ] args){ // code ..} or public static void main(String args[ ]){ // code ..} is both correct ?

[@Telusko]

Yes

[@suhashm5499]

Hi Sir, from past month i am asking this doubt,plz do reply.My conecern is that is this course for absolutel beginners!!! I need to start from very scratch because i didn't even know what is public static void main ..so plz do reply for my query

[@Exploreyourself1234]

Yaa bro 😊 even I am the beginner. You can start dude.ALL THE BEST. 😊

[@sumiluckymikkubasant]

May i know why the class is not getting created

[@zainabkhan5059]

Save the code before compiling the code press ctrl+s

[@dragondark8633]

awesome man keep it up

[@mayanksrivastava7540]

sir how did you compile the code , i am not able to understand , it all happened a bit too fast

[@KOLKATARChele-555]

So we can say that Java application is jvm dependent

[@BetterTogether_9]

8:33 is still not clear i don't have the z on my terminal site i can't understand how he run it.

[@thorandhulk2983]

We got "z" in print statement because of the extension It's not a problem

[@puneethnaika]

Suppose Android app is made using Java. Does our Android phone have jvm installed to run the application.

[@ShivaniBathula]

i didn't get a class file after compiling,what do i do

[@BbbSss-qu3we]

Me same thing.. how to fix it ?

[@DeepakNamdeo-g1g]

Thanks you very much 😊

[@shaikabdulazeez4778]

Hi sir . I wrote java program like u same but in terminal when i compile code error:- could not find or load main class Hello . What the problem can you tell me 🙂.

[@bandarurahul4144]

Bruh did you got the solution cause I too got the same prblm?

[@BluePaneTechnologies-nu4hh]

simply great.

[@meenagachaitanya1306]

Sir we can write println also?

[@sanketpawar7534]

yeah it's also used to print stmt in java , liittle diffrence is by using print it will print given stmt in same line, whereas println prints stmt in new line everytime

[@astech5825]

byte code is not coming sir

[@zainabkhan5059]

Save the code before compiling the code press ctrl+s

[@sergiogarcia4697]

awesome video!

[@TrendBomb-vrs]

Thank u bro❤

[@rannnniiiiii]

why did you sir suddenly remove 'ln' from 'println' ?

[@dreamofdi427]

Sir it is coming main not found in the file .define main method . please help me sir 🙏🙏🙏🙏🙏🙏

[@akbarshohulmaszoda7918]

oh brother, your accent makes me cry

[@BinduVuppala]

After compiling its not giving byte code, please respond

[@sohambhalerao7287]

after compilation class files are created those files are bytecode.

[@muthinenidharmagokul7603]

when I tried to run the Java file it didn't generate the class file in the vs code, what may be the reason?, when I tried javac version it showed me the latest installed version as well

[@yskarthik7853]

You need to save the file before generating the class file.

[@funatsun]

helo sir ,i got an error in javac hello.java i checked the code also...and i didnt got hello.class? at 8:42

[@zainabkhan5059]

Save the code before compiling the code press ctrl+s

[@vempatinithin5591]

sir i did't get hello class extra file plz can u tell

[@navdeepagrawal9201]

Why jdk required in our machine, if not required in friend's machine

[@jeelpatel54]

sir i have an issue vs code says hello.java is non -project file what should i do?

[@haripriya8034]

Sir I got confused at the end. That our friend's machine only have JRE and JVM. JDK is not required. Thank you so much sir for this beautiful content.....

[@johnnwick733]

JRE ( which contains JVM) is only required for executing byte code.

[@addankiadda2594]

love from andhra

[@gadekardnyaneshwar]

getting f0lllowing error, Hello.java:3: error: cannot find symbol public static void main(string a[])

[@beqari]

Well I've never had problem with printing Hello World in programming, seems like people have experienced same thing here and No help... :D it just cant find class with name Hello

[@geniusworld7484]

very helpful

[@mr.double.s909]

You are amazing

[@akshaykadam8168]

kudos sir .!!

[@kapilsoraganvi8234]

I am Facing a problem with running the code my class is not created after running the code please help me with it

[@srikanthyadav7265]

Save the code before compiling the code

[@deepakjoy1862]

The Byte is not getting generated