Java ThreadGroup .setMaxPriority (int pri)

public final void setMaxPriority(int pri)

public class Main {
  public static void main(String[] args) {
    new ThreadGroupDemo();
  }//from   w  w  w  .  j a v a  2  s . c o  m
}
class ThreadGroupDemo implements Runnable {
  public ThreadGroupDemo() {

    ThreadGroup pGroup = new ThreadGroup("Parent ThreadGroup");
    pGroup.setMaxPriority(Thread.MAX_PRIORITY - 2);

    ThreadGroup cGroup = new ThreadGroup(pGroup, "Child ThreadGroup");
    cGroup.setMaxPriority(Thread.NORM_PRIORITY);

    Thread t1 = new Thread(pGroup, this);
    t1.setPriority(Thread.MAX_PRIORITY);
    System.out.println("Starting " + t1.getName());
    t1.start();

    Thread t2 = new Thread(cGroup, this);
    t1.setPriority(Thread.MAX_PRIORITY);
    System.out.println("Starting " + t2.getName());
    t2.start();

    System.out.println("Active threads in \"" + pGroup.getName() + "\" = "
        + pGroup.activeCount());

  }

  public void run() {
    System.out.println(Thread.currentThread().getName() + " [priority = "
        + Thread.currentThread().getPriority() + "] finished executing.");
  }
}