Java ThreadGroup isDestroyed() method with Examples

by Online Tutorials Library July 22, 2022

Java ThreadGroup isDestroyed() method

The isDestroyed() method of ThreadGroup class tests if the thread group has been destroyed.

Syntax:

Return:

This method returns true if the object is destroyed.

Example

  class NewThread extends Thread   {      NewThread(String threadname, ThreadGroup tg)      {          super(tg, threadname);      }      public void run()      {          for(int i = 0;i < 10;i++)           {              i++;          }          System.out.println(Thread.currentThread().getName() + ” completed executing”);      }  }  public class ThreadGroupIsDestroyedExp   {      public static void main(String arg[]) throws InterruptedException,          SecurityException, Exception      {          // creating a parent threadGroup          ThreadGroup tg1 = new ThreadGroup(“Parent thread”);          // creating a child threadGroup           ThreadGroup tg2 = new ThreadGroup(tg1, “Child thread”);            // creating a thread           NewThread t1 = new NewThread(“Thread-1”, tg1);          System.out.println(“Starting of Thread-1”);          t1.start();           // creating another thread           NewThread t2 = new NewThread(“Thread-2”, tg2);          System.out.println(“Starting of Thread-2”);          t2.start();            if (tg1.isDestroyed() == true)              System.out.println(“Group is destroyed”);          else              System.out.println(“Group is not destroyed”);      }  }     

Test it Now

Output:

Starting of Thread-1  Starting of Thread-2  Group is not destroyed  Thread-1 completed executing  Thread-2 completed executing

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Java ThreadGroup isDestroyed() method with Examples

Java ThreadGroup isDestroyed() method

Syntax:

Return:

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