//******************************************************* 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

2 жыл бұрын

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

Жыл бұрын

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

Жыл бұрын

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 { 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 { System.out.println ("Second thread : " + i); try { Thread.sleep (2000); } catch (InterruptedException e) { e.printStackTrace (); } } System.out.println("Second thread is completed."); } }

You are absolutely the best teacher for me. I appreciate your teaching methodology and Thanks for everything you put into this course.

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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

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!

@adityarajsrivastava6580

3 жыл бұрын

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

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!

@ban_droid

3 жыл бұрын

Sorry for your money that have been lost to pay that udemy course, lol 😂 i'm glad i'm checking every tutorial on youtube first if its exist for free 😂

@Lilyofc

7 ай бұрын

Screw them

Excellent explanation on both threading and multithreading. Thank you!

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There's an easier way to make threads! Runnable is a @FunctionalInterface, which means that you can replace your custom Runnable with a function that takes no arguments and returns nothing. It's much nicer: Thread thread1 = new Thread(MyClass::myProcedure); Or you can write it as a lambda expression if you prefer this syntax: Thread thread2 = new Thread(() -> myProcedure());

GREAT DISCOVERY ON A WEEKEND

Thank u