Threads java

Un démon souvent c'est un programme (ou sous-programme) qui tourne dans une boucle infinie.
Il s'agit souvent d'un logiciel qui fait office de serveur.

quel est la fonction exacte de deamon dans ce programme stp:

/******************************
* a simple thread example.
* Two dependent threads started from main()
* when main ends, the two deamons end, too
* @author: Jaeger
* @version 1.0
*******************************/
public class SchowDeamon extends Thread {

private String word; //what to print
private int delay; // how long to wait
private int count; //how many ticks

public SchowDeamon(String whatToSay, int delayTime, int howMany) {
word = whatToSay;
delay = delayTime;
count = howMany;

}

public void run() {
try {
while (count > 0) {
System.out.print (word +" ");
//System.out.flush();
count = count -1;
Thread.sleep(delay); //stops a while, is interruptable now
}
System.out.println("thread terminated normally");
}
catch (InterruptedException e) {
System.out.println("thread interrupted");
Thread.currentThread().interrupt(); // end this thread
}
}

private static void doSomething() {
for (long i=0; i<7; i++) {i=i+1;i=i-1;}

}

public static void main (String[] args) {
Thread child1 = new SchowDeamon("tick", 600, 3);
child1.setDaemon(true); // makes the thread depenedend from the spawner
child1.start();

Thread child2 = new SchowDeamon("TOCK", 600, 4);
child2.setDaemon(true); // makes the thread depenedend from the spawner
child2.start();

doSomething();

System.out.println ("main ended");
}

}

merci

C'est la méthode run()

un thread démon en fait c'est ça:
https://fr.wikipedia.org/wiki/Daemon