#87 Thread Priority and Sleep in Java

[@Charitsis]

Obviously, the goal of this short tutorial is to teach the concept of thread priority and show how Thread.sleep() works. Navin did a great job explaining those. However, if your goal is to enforce execution order between threads, you can use a binary semaphore like the code below and do not rely on elements of randomness like sleep or thread-scheduling algorithms:
------------------------------------------------------------
import java.util.concurrent.Semaphore;
public class Demo {
Semaphore goA = new Semaphore(1);
Semaphore goB = new Semaphore(0);
public static void main(String[] args) {
Demo demo = new Demo();
A obj1 = demo.new A();
B obj2 = demo.new B();
obj1.start();
obj2.start();
}
class A extends Thread
{
public void run() {
for (int i = 1; i

[@The_MinecraftDude]

Oo😮

[@Sanai9]

by ur saying at 6:50 .Sir, i've kept a time gap of 10 milli secs but still no use, hello was printed twice ,
many times

[@Spam-xi2nv]

Depends on how fast your computer is. It would have finished the process pretty fast. Try increasing the sleep time, just play with it .

[@saqibullah7286]

very nice explanation sir keep it up

[@shashankdeep403]

We can use serializable for making it sequence?

[@maleeshasandakalum6213]

Thank you sir❤❤

[@justincarter360]

awesome!
its hard to split de HI. and HELLO.. i couldnt but it cool!!

[@codewithmaheshhbalwan]

public class MultipleThreads {
public static void main(String[] args) {
printHello o = new printHello();
printHi i = new printHi();
o.start();
try {
Thread.sleep(5);
} catch (InterruptedException e) {
e.printStackTrace();
}
i.start();
}
}
class printHello extends Thread {
public void printHello() {
for (int i = 0; i < 10; i++) {
System.out.println(i + " : " + "hello");
try {
Thread.sleep(10);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
}
class printHi extends Thread {
public void printHi() {
for (int i = 1; i < 10; i++) {
System.out.println(i + " : " + "hi");
try {
Thread.sleep(10);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
}

[@ehteerk]

Wait & Try Catch

[@Aashutosh_Bajaj]

Will this work ???
class A extends Thread{ // after extending it with thread then now it is a thread
// start is a method that belongs to thread class
public void run(){
// every thread will have a run method
int count1 = 0;
for(int i = 0; iHIGHEST PRIORITY
// System.out.println("Priority (before) is: " + obj1.getPriority());
// obj1.setPriority(Thread.MAX_PRIORITY);
// System.out.println("Priority (after) is: " + obj1.getPriority());
}
}
// If you have 4 cores then you can execute 4 threads
// If you have an octaCore processor then you can execute 8 threads
// Number of cores are propotional to number of threads

[@HeadSHOOTdewunzz]

I have 6-core processor and tried 7 threads but it worked, any clue why?

[@NakabuyeLea]

We appreciate👍

[@SidharthDev-nw2vc]

Brilliant.

[@sakshikhaire396]

Missing Hello Aliens!!

[@TheGloriousOne0]

❤

[@Zenetz-le4mq]

my machine is printing HIHI ns hello hello even if we apply sleep for both the Threads.