Java threads 🧵

java thread tutorial
#Java #thread #threads

[@BroCodez]

//********************************************************************* public class Main{ public static void main(String[] args) throws InterruptedException{ /* thread = A thread of execution in a program (kind of like a virtual CPU) The JVM allows an application to have multiple threads running concurrently Each thread can execute parts of you code in parallel with the main thread Each thread has a priority. Threads with higher priority are executed in preference compared to threads with a lower priority The Java Virtual Machine continues to execute threads until either of the following occurs 1. The exit method of class Runtime has been called 2. All user threads have died When a JVM starts up, there is a thread which calls the main method This thread is called “main” Daemon thread is a low priority thread that runs in background to perform tasks such as garbage collection JVM terminates itself when all user threads (non-daemon threads) finish their execution */ //System.out.println(Thread.activeCount()); //Thread.currentThread().setName("MAIN"); //System.out.println(Thread.currentThread().getName()); //Thread.currentThread().setPriority(10); //System.out.println(Thread.currentThread().getPriority()); //System.out.println(Thread.currentThread().isAlive()); /* for(int i =3;i>0;i--) { System.out.println(i); Thread.sleep(1000); } System.out.println("You are done!"); */ //MyThread thread2 = new MyThread(); //thread2.setDaemon(true); //System.out.println(thread2.isDaemon()); //thread2.start(); //System.out.println(thread2.isAlive()); //thread2.setName("2nd thread"); //System.out.println(thread2.getName()); //thread2.setPriority(1); //System.out.println(thread2.getPriority()); //System.out.println(Thread.activeCount()); } } //********************************************************************* public class MyThread extends Thread{ @Override public void run() { if(this.isDaemon()) { System.out.println("This is a daemon thread that is running"); } else { System.out.println("This is a user thread that is running"); } } } //*********************************************************************

[@aquate9637]

You should create a website and post your code there, I think people would really appreciate it.

[@nikolamarkovic9906]

Ched

[@spicynoodles3317]

Bro Code, please know you're out here saving lives, tears, grades, and reputations. I'm in an internship doing java programming and you're about 95% of the reason I've only cried once.

[@yusuphmwaigomole3104]

Fantastic

[@joyceasante8292]

Practicing... public class Main { public static void main (String[]args) throws InterruptedException { //System.out.println(Thread.activeCount()); //Thread.currentThread().setName("Main"); //System.out.println(Thread.currentThread().getName()); //Thread.currentThread().setPriority(1); //System.out.println(Thread.currentThread().getPriority()); //System.out.println(Thread.currentThread().isAlive()); /*for (int i = 8; i > 0; i--) { System.out.println (i); Thread.sleep (2000); } System.out.println("Done!"); */ MyThread thread2 = new MyThread(); thread2.setDaemon(true); System.out.println(thread2.isDaemon()); thread2.start(); //System.out.println(thread2.isAlive()); //thread2.setName("Thread II"); //System.out.println(thread2.getName()); //thread2.setPriority(1); //System.out.println(thread2.getPriority()); System.out.println(Thread.activeCount()); } } ************ public class MyThread extends Thread{ @Override public void run(){ if(this.isDaemon()){ System.out.println("Daemon thread is confirmed."); } else{ System.out.println("User thread is running."); } } }

[@matthewbrightman3398]

Hey man! Last summer I spent my vacation in Florida watching your channel; wrote a cool game. This summer I'm on assignment in Germany, and I'm back to watching your channel again. You have the perfect way of teaching Java! 10-15 minutes, examples, fun. Just great.

[@chsktricks9397]

Hey! Hi matthew

[@scotch5094]

which course did he teach about game bro

[@SpeaksYourWord]

@@scotch5094 He only has beginner courses unfortunately but it would be great if he made advanced ones even if paid.

[@IdeeFixeGamer]

pure gold, these tutorials are genius. more tutorials please

[@nizarouertani1315]

by far the best java youtube channel

[@screenname96]

I love your channel, thank you so much. You make things so concise. I come to your channel for every topic in my Java class and view the videos on it before going through my professors provided resources. It helps me tremendously. Bless you, my guy.

[@joelcruz2873]

This was very useful after spending a couple days learning the basics of threads. If I began everything with watching this video, I wouldn't have known what was going on

[@nawfalnjm5699]

your playlists are amazing . thank you !

[@LostKitty64x]

This video is extremely helpful and not hard to watch at all so far. I need this information but got tired of seeing 3 hour long videos drag on. So far so good. thank you for providing this content to me. I need it for a mod I'm trying to build.

[@furkanveliisk4113]

simple yet effective. thanks for the lectures brah

[@srujansanga2689]

this teaching saved me one day of exercising on pdfs about threads

[@ibrahimylmaz8378]

thank you Bro :) I got my first job, I studied Java with your videos, super helpful.

[@ahmadal-hafi580]

Yooo U have a great way for explaining!

[@argyriskappa2789]

Bro, you just saved my semester. You da best.

[@HIMANSHU-mt1jk]

Us bro

[@saransridhara6622]

Saved mine as well 💥💥

[@envektro2519]

I hope you keep doing these kind of videos

[@lilit3552]

This was well explained informative lesson. Thank you!

[@darianchan4649]

awesome tutorial!

[@jenkar5716]

Virgin College: Takes hefty amout of fee but still doesn't know how to teach young minds Chad Bro: *Simple explanation and Free of cost*

[@jusun2009]

Very helpful content and thorough explanation. Thank you for sharing!👍

[@GraceHerbert-bk4it]

Awesome as usual!

[@blabberq]

Simple, good explanation :)

[@user-jp3le2lz6d]

Bro is genius in Java !

[@mahdib9361]

Amazing Video please Continue

[@waedradi8552]

Thanks bro One of the best 👏🏼

[@ajaykotian5]

Thank you for posting this -- the video is extremely useful.

[@faizalimuhammadzoda4731]

Thanks for the effort. Appreciate it.

[@oguzhantopaloglu9442]

extremely informative!

[@jrd3uCe]

I will forever keep coming back to your page for review and better understanding

[@pitched7401]

I was wondering something about the run method. Why is it not always necessary to implement the Runnable interface? I often see threads getting created with the Runnable interface or the corresponding lambda expression. If the Thread class already has it's own "run" method, why do people implement the Runnable interface seperately?

[@sanayasamadhi70]

amazing video.u make my day

[@faizalimuhammadzoda4731]

Thanks for sharing!

[@user-ke9vd6mx1n]

best explanation!

[@esthermdzitiro31]

Great video

[@110dhruvpatel5]

you deserve a sub.

[@xpolentaedgex]

thanks for the class Bro

[@-zokzok-9455]

that was awesome thank you sensei

[@AbhijeetKumar-cm3jh]

Thanks BRO !!

[@user-rl7uc8ce6m]

great video ! thank you very much !

[@SpidahRidah]

Excellent video. Thank you.

[@AEINTech]

Great video : )

[@girl6994]

I used thread in Client and server project I made. If many Client need to connect to one server, I created many thread to handle many different Client.

[@AVGilboa]

thank you!

[@essaalu7047]

useful 👍💙

[@mateskyjanica7696]

Good job, Bro

[@oscarjosefsson9300]

So I guess this is normal. But I still got confused. Because when thread2 starts you can no longer know for sure in which order things will happen. Sometimes thread 2 will finish before you have time to check if it is running or how many threads are running. And sometimes it will still be alive when you check it. Try adding a few more printline statements in both threads. Quite interesting to see how it will sometimes execute one line of code from one thread then jump to the other thread and so on. Also when making thread2 a daemon thread there is actually no guarantee that it will have time to execute all of its program before the Main thread finishes and thus shuts down the program!

[@matteocamarca]

Priceless. Thanks.

[@calor6990]

Thank you friend!

[@NHCS_AMOGH_PATIL]

Bro you are great bro

[@adityavikramsingh802]

This guy is an absolute DAWGGGGGGGGGGGGG

[@user-ke6vc7pk6x]

very useful video

[@ruantristancarlinsky3851]

Excellent video. Semester just started and this video really helped me out a lot man!. Please be sure to continue making more videos. Thanks

[@Momo-qr3rd]

Thank you Bro :)

[@user-hr9dj3gm5u]

It is good explenation i have ever listened

[@thangavelpetchiappan4689]

well explained.. :)

[@JohnWick-hp8wn]

OP stuff vrooo

[@magxbeats]

Good sir 👍

[@CJDaBomb69]

How did you get your console text to be that colour?

[@Monsta1291]

amazing

[@behrangfattahi9328]

Tnx bro you are the best

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Hit like to SUPPORT HIM, If you believe HE IS THE LIFE SAVER !!!!!!!

[@user-oe8es7hu5h]

That's cooool!

[@ivy267]

thx a lot bro

[@abdullahalmahmud2146]

awesome

[@tuanhungpham449]

Thanks bro

[@nehalayaaz9406]

Thanks 😊

[@chocodonuts3644]

helpful

[@percivalgebashe4376]

Nice

[@shaynazoedeguzman7418]

Two thumbs up! 👍👍

[@tanushthiru3389]

good vid 👍

[@kippenvogelchen9717]

nice!

[@gogoi.]

Thank You

[@gustavokenzomiyamoto2434]

What is the relationship/difference between threads and methods (and classes)?

[@tharinduperera8758]

Methods are actions that need to be taken place.. you can implement anything to do within the method. Let's say you need to execute that method 5 times in parallel. Then you can use threads.. threads will execute your method number of threads you have defined simultaneously.. if you did this using a loop it will execute one after another. Threads likes number of people doing the same function at the same time..instead of one handling the heavy load , multiple threads can handle the work load faster and efficiently with the cost of memory usage. And as bro taught you can use the thread execute the method or certain function with a certain time interval and so many other functions

[@osazeimohe7745]

Thank you

[@yahelbraun5471]

Can you make a video about @Override?

[@BroCodez]

kzbin.info/www/bejne/iKGrZmOZZ79gfsU

[@yahelbraun5471]

@@BroCodez thank you! Very good explanation!

[@MrLoser-ks2xn]

Thanks

[@kemann3815]

Another banger

[@harshith_takkala]

Hey thanks But at the second println statement of thread.active count, I am getting 1 sometimes and 2 sometimes Why? I have started the thread 2 also

[@girl6994]

Liked, by the way , there are so many people

[@sofianealloui]

BRO ♥

[@tobrojekt27]

if i set thread2 to daemon, it did not show up the message, that it is a daemon thread that is running. I needed to add thread2.join; after the thread2.start; statement, in order to execute the run() function of thread2 somehow

[@tobrojekt27]

and i dont know why it workd for u but not for me without the thread2.join

[@Origon09]

14:08 when you are using the run method. How does the method know which thread it is checking?

[@Origon09]

couldn’t it be checking the main thread and not the one you just created?

[@Makariush]

THX

[@Bladermishal10]

hmmm so the when you call a thread it just runs all the functions? because you didnt call the run function

[@MrLoser-ks2xn]

[@carlosbernardo6531]

[@_sf_editz1870]

I want to be a fellow bro

[@yahelbraun5471]

I don't understand what is a thread.. can someone explain?

[@BroCodez]

A thread is a single sequential flow of control within a program

[@vitor1678]

I'm dropping a comment down below for Bro.

[@girl6994]

My teacher didn’t taught me anything about daemon thread. Now I know something such as GC ‘s thread is a daemon thread. But there are still more daemon thread right? Could you list them?

[@BroCodez]

That one was the only example that I could find that I know of. You can make a user thread a daemon thread and the benefit is that the JVM does not wait for Daemon threads before exiting, while it waits for user threads, it does not exit unless all the user threads finish their execution

[@girl6994]

Bro Code but if JVM does not wait for daemon thread before exit , that sounds a little strange. But wait, I asked my teacher just now, he said in Chinese it calls 守护线程, which means thread protector thread, which means he will die if he’s lover dies.

[@BroCodez]

@@girl6994 Daemon threads do background tasks usually. We typically don't want the JVM to wait to exit for daemon threads. The JVM will wait for user threads however

[@girl6994]

Bro Code He didn’t mention that daemon thread always run background . I heard it for the first time.

[@girl6994]

Bro Code I understood. After your explanation. I didn’t know daemon thread well after that class. At that time I was very confused about why there is something calls daemon thread , but now I understood. Because Daemon threads do background task, and we don’t want JVM to wait to exit for daemon threads. No wonder it calls 守护线程in Chinese. It is a interesting translation though.

[@davidgonzalez-ge7ol]

GOLD

[@ponanbalagan2988]

My query is how to add JFrame in database please answer bro code

[@BroCodez]

I haven't covered SQL yet, that may require a video to explain

[@NguyenMinhuc-ss2cs]

ok

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Ly bro 12

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comment for stats

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just "bro"

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slay

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hi

[@dominos11111]

f*** yt algorithms, thanks for video :)))

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comment

[@kristjantoplana2993]

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