Daemon.java Source code

Introduction

Here is the source code for Daemon.java

Source

// : c13:Daemons.java
// Daemon threads spawn other daemon threads.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.

class Daemon extends Thread {
    private Thread[] t = new Thread[10];

    public Daemon() {
        setDaemon(true);
        start();
    }

    public void run() {
        for (int i = 0; i < t.length; i++)
            t[i] = new DaemonSpawn(i);
        for (int i = 0; i < t.length; i++)
            System.out.println("t[" + i + "].isDaemon() = " + t[i].isDaemon());
        while (true)
            yield();
    }
}

class DaemonSpawn extends Thread {
    public DaemonSpawn(int i) {
        start();
        System.out.println("DaemonSpawn " + i + " started");
    }

    public void run() {
        while (true)
            yield();
    }
}

public class Daemons {

    public static void main(String[] args) throws Exception {
        Thread d = new Daemon();
        System.out.println("d.isDaemon() = " + d.isDaemon());
        // Allow the daemon threads to
        // finish their startup processes:
        Thread.sleep(1000);
    }
} ///:~