Daemon threads spawn other daemon threads

 

// : 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);
  }
} ///:~

1.	Create a thread by implementing Runnable.
2.	Create a thread by extending Thread.
3.	Thread Reminder
4.	Thread Race Demo
5.	Suggesting when to switch threads with yield()
6.	Creating threads with inner classes
7.	The safe way to stop a thread
8.	Calling sleep() to wait for a while
9.	Understanding join()
10.	Daemon threads don't prevent the program from ending.
11.	Shows the use of thread priorities.
12.	Java new feature: threading
13.	Java 1.5 (5.0) new feature: Thread Schedule
14.	Two simple threads
15.	Simple threads creator
16.	Task
17.	SimpleThread using the Runnable interface.
18.	Very simple Threading example.
19.	Test Override Thread
20.	Test Override
21.	Parallelizing Loops for Multiprocessor Machines
22.	Listing All Running Threads in a group
23.	Setting priorities on the Thread objects
24.	Thread priorities.
25.	Use a ThreadGroup.
26.	Three Threads Test

Daemon threads spawn other daemon threads : Simple Threads « Threads « Java

Related examples in the same category