Java Data Type Tutorial - Java ThreadGroup.getParent()

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Syntax

ThreadGroup.getParent() has the following syntax.

public final ThreadGroup getParent()

Example

In the following code shows how to use ThreadGroup.getParent() method.

/*from ww  w.ja  v  a2  s. co  m*/
public class Main {
  public static void main(String[] args) {
    new ThreadGroupDemo();
  }
}
class ThreadGroupDemo implements Runnable {
  public ThreadGroupDemo() {
    ThreadGroup pGroup = new ThreadGroup("Parent ThreadGroup");

    ThreadGroup cGroup = new ThreadGroup(pGroup, "Child ThreadGroup");

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

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

    System.out.println("ParentThreadGroup for " + pGroup.getName() + " is "
        + pGroup.getParent().getName());
    System.out.println("ParentThreadGroup for " + cGroup.getName() + " is "
        + cGroup.getParent().getName());

  }

  public void run() {

    System.out.println(Thread.currentThread().getName()
        + " finished executing.");
  }
}

The code above generates the following result.

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