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kilian Messages postés 8675 Date d'inscription Statut Modérateur Dernière intervention -
kilian Messages postés 8675 Date d'inscription Statut Modérateur Dernière intervention -
Bonjour,
je ne comprend toujours pas ce que fait un deamon threads? Est ce un threads qui fonctionne en invisible?
merci
je ne comprend toujours pas ce que fait un deamon threads? Est ce un threads qui fonctionne en invisible?
merci
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3 réponses
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.
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
/******************************
* 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
