Java multithreading 🧶

Java multithreading tutorial
#java #multithreading #tutorial
//***************************************************************
public class Main{
public static void main(String[] args) throws InterruptedException{
// Create a subclass of Thread
MyThread thread1 = new MyThread();
//or
//implement Runnable interface and pass instance as an argument to Thread()
MyRunnable runnable1 = new MyRunnable();
Thread thread2 = new Thread(runnable1);

//thread1.setDaemon(true);
//thread2.setDaemon(true);
thread1.start();
//thread1.join(); //calling thread (ex.main) waits until the specified thread dies or for x milliseconds
thread2.start();
//System.out.println(1/0);
}
}
//***************************************************************

[@BroCodez]

//******************************************************* public class Main{ public static void main(String[] args) throws InterruptedException{ // Create a subclass of Thread MyThread thread1 = new MyThread(); //or //implement Runnable interface and pass instance as an argument to Thread() MyRunnable runnable1 = new MyRunnable(); Thread thread2 = new Thread(runnable1); //thread1.setDaemon(true); //thread2.setDaemon(true); thread1.start(); //thread1.join(); //calling thread (ex.main) waits until the specified thread dies or for x milliseconds thread2.start(); //System.out.println(1/0); } } //******************************************************* public class MyThread extends Thread{ @Override public void run() { for(int i =10;i>0;i--) { System.out.println("Thread #1 : "+i); try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } } System.out.println("Thread #1 is finished :)"); } } //******************************************************* public class MyRunnable implements Runnable{ @Override public void run() { for(int i =0;i

[@Sorjen108]

Hello I have a question How would you create a multi-threaded program with 2 FOR loops, and change the priority of the loops to make the second loop terminate before the first loop? I have tried to use the set priority but to avail, the first FOR loop always gets executed first

[@jojovstojo]

public class Main{ public static void main(String[] args) throws InterruptedException{ //1st Way of creating a Thread :: Create a subclass of Thread class MyThread thread1 = new MyThread(); //or //2nd Way of creating a Thread :: Implement Runnable interface and pass instance as an argument to Thread() MyRunnable runnable1 = new MyRunnable(); Thread thread2 = new Thread(runnable1); thread1.setDaemon(true); thread2.setDaemon(true); //Normally, when thread1 & thread2 are not daemon threads -- in that case, even if an exception occurs in the 'main' thread, the other two threads will continue to run (& complete) without any interruption. But, if we make the threads - thread1 & thread2 - into daemon threads - then in that case there remains only one primary/user thread i.e 'main' thread. An then, if any exception occurs in our one and only user/primary thread i.e main thread, then the compiler does not care to complete the execution of daemon threads (threads1 & thread2) and the whole program immediately stops. thread1.start(); thread1.join(); //this line of code makes the 'main' thread wait/pause untill the thread1 completes its excecution. And once thread1 completes its execution, the main thread continues again -- i.e starts threads2. // thread1.join(3000); //this line of code makes the 'main' thread wait/pause for 3000 milliseconds (after starting of thread1) before continuing its execution -- i.e starting threads2. thread2.start(); //An important point to note here is that even if there occurs an exception during execution of one of the threads, the other thread/threads continue to run without any problem. System.out.println(1/0); //This will cause an exception in 'main' thread but the threads 'thread1' and 'thread2' will continue to run without any interruption. But, if threads - thread1 & thread2 - are made into daemon threads, then in that case there remains only one primary/user thread i.e 'main' thread. Then, as soon as the exception occurs in the main thread (1/0), the compiler does not care to complete the execution of daemon threads (threads1 & thread2) and the whole program immediately stops. } } ********************************************************************************************************************** public class MyThread extends Thread{ @Override public void run() { //When we start an instance of this thread, the code inside run() function executes. run() is a function of Thread class. for(int i =10;i>0;i--) { System.out.println("Thread #1 : "+i); try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } } System.out.println("Thread #1 is finished :)"); } } ********************************************************************************************************************* public class MyRunnable implements Runnable{ @Override public void run() { for(int i =0;i

[@joyceasante8292]

Practicing... 1st Method(Creating a subclass of the the tread class) public class Main { public static void main(String[] args) { MyThread thread1 = new MyThread(); } } *************************************** public class MyThread extends Thread{ @Override public void run(){ for(int i=10; i>0; i--){ System.out.println("First thread : "+i); try{ Thread.sleep(2000); } catch(InterruptedException e) { e.printStackTrace(); } } System.out.println("First thread is completed."); } } _____________________________________________ 2nd Method(Creating a class that implements the runnable interface) public class Main { public static void main(String[] args) { MyThread thread1 = new MyThread(); MyRunnable runnable1 = new MyRunnable(); Thread thread2 = new Thread(runnable1); } } **************** public class MyThread extends Thread{ @Override public void run(){ for(int i=10; i>0; i--){ System.out.println("First thread : "+i); try{ Thread.sleep(2000); } catch(InterruptedException e) { e.printStackTrace(); } } System.out.println("First thread is completed."); } } ********************* public class MyRunnable implements Runnable{ @Override public void run(){ } } ______________________ Successfully Multithreading public class Main { public static void main(String[] args) { MyThread thread1 = new MyThread(); MyRunnable runnable1 = new MyRunnable(); Thread thread2 = new Thread(runnable1); thread1.start(); thread2.start(); } } ******************* public class MyThread extends Thread{ @Override public void run(){ for(int i=10; i>0; i--){ System.out.println("First thread : "+i); try{ Thread.sleep(2000); } catch(InterruptedException e) { e.printStackTrace(); } } System.out.println("First thread is completed."); } } ************************** public class MyRunnable implements Runnable { @Override public void run () { for (int i = 0; i < 10; i++) { System.out.println ("Second thread : " + i); try { Thread.sleep (2000); } catch (InterruptedException e) { e.printStackTrace (); } } System.out.println("Second thread is completed."); } } ___________________________________ Final Code public class Main { public static void main(String[] args) throws InterruptedException { MyThread thread1 = new MyThread(); MyRunnable runnable1 = new MyRunnable(); Thread thread2 = new Thread(runnable1); //thread1.setDaemon(true); //thread2.setDaemon(true); thread1.start(); //thread1.join(5000); thread2.start(); System.out.println(2/0); } } ****************************** public class MyThread extends Thread{ @Override public void run(){ for(int i=10; i>0; i--){ System.out.println("First thread : "+i); try{ Thread.sleep(2000); } catch(InterruptedException e) { e.printStackTrace(); } } System.out.println("First thread is completed."); } } ********************************** public class MyRunnable implements Runnable { @Override public void run () { for (int i = 0; i < 10; i++) { System.out.println ("Second thread : " + i); try { Thread.sleep (2000); } catch (InterruptedException e) { e.printStackTrace (); } } System.out.println("Second thread is completed."); } }

[@wanke9837]

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[@hgatl]

This is definitely the best description of many videos that i have watched, super

[@Genesis-dj7kw]

I must admit, I used to have no damn clue in class about java. Then I bought a Udemy course, which I found better to understand, yet still confusing at times. And now I stumbled upon your tutorials for Java; straight to the point, simple, yet applicable examples and all I need to pass my exams and actually enjoy coding. thank you so much :D

[@kareem1737]

Excellent explanation on both threading and multithreading. Thank you!

[@Mr.Legend_9]

Thanks bro,Ive learned a lot from you...when i first see your videos i dont know anything regarding coding but now i have made my own apps.I came again because i forgot threading basics and my new app really needs it.Keep it up,I Wish you have a happy life.

[@thedeveloper643]

you're helping me way more than this super thick book that i bought a couple days ago the book is probably good to someone else but it explains the same concepts in a complicated way with all the fancy words but you make it easier to understand showing simple examples it's ironic that it's easier for me to understand something in language that's not my mother tongue thank you for great videos! liked and subscribed love from south korea!

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It is not strange for Hindi is my mother tongue but he gives various hilarious examples which make it easier to learn coding.

[@stevancosovic4706]

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[@user-hr9dj3gm5u]

This is the best video about multithreadind in java!

[@Skillet367]

Good job man, thanks for the great work.

[@hrishikeshmk6243]

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[@darklegend7981]

An Hour worth spent learning !Thanks Bro

[@TheElliotWeb]

Thank you! It's a great explanation of basic multithreading stuff what I found on KZbin.

[@bosssmith9507]

Thanks, man this helped with my object-oriented programming class :]

[@ricardorosa5315]

Very very well explainned!!! Thank you very much!!!

[@WickedChild95]

Very good tutorial, thank you!

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[@joelmarkjmj]

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[@niiazbekmamasaliev9828]

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[@levi25902]

Threads seemed very hard at campus, your video helped me understand it much better. Thank you for this amazing Video

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[@jasper5016]

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[@tirunagariuttam]

Thanks for the nice explanation.

[@user-yq5hj6lg3e]

Best of Best, sir. Thank you so mush.

[@x3puair974]

Nice video. Very helpful. Thanks

[@markus_code]

Thank You for examples. I think now I can run my code without any sluggish methods. But it's not just that I think also I will change structure and logic of my program. D.amn thank you for opening my eyes.

[@PDSshinigami]

i missed a class on this ,so i searched for it trying to find alex lee or someone relevant ,n im glad i found this channel ,now I got the syntax just have to do the logic until its second nature

[@yuvalmuseri5464]

Sank you very much for da knowledge boi

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[@adrianlealcaldera2405]

very good, keep making videos man

[@UninspiredFilm5]

Spent the whole day trying to make a program work with multiple threads in a method that made no sense, started fresh and this video made it work just right!

[@user-ru4xi2fo1t]

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[@korolek6442]

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[@nitwaalebhaiya]

Excellent Explanation.

[@adrian_vsk7203]

I tried to learn multithreading on a Udemy course and it seemed super complicated and difficult. This video made it so much simpler and provides really clear examples. Thanks so much Bro! Keep up the great work!

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[@-Corvo_Attano]

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[@APDesignFXP]

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