Java Thread destroy() Method with Examples

by Online Tutorials Library July 22, 2022

Java Thread destroy() method

The destroy() method of thread class is used to destroy the thread group and all of its subgroups. The thread group must be empty, indicating that all threads that had been in the thread group have since stopped.

Syntax

Return

It doesn’t return any value.

Exception

IllegalThreadStateException: This exception throws if the thread group is not empty or if the thread group has already been destroyed.

SecurityException: If the current thread cannot modify this thread group.

Example

  public class JavaDestroyExp extends Thread   {      JavaDestroyExp(String threadname, ThreadGroup tg)      {          super(tg, threadname);          start();      }      public void run()      {          for (int i = 0; i < 2; i++)           {              try              {                  Thread.sleep(10);              }              catch (InterruptedException ex) {                  System.out.println(“Exception encounterted”);}          }          System.out.println(Thread.currentThread().getName() +                ” finished executing”);      }      public static void main(String arg[]) throws InterruptedException, SecurityException      {          // creating a ThreadGroup          ThreadGroup g1 = new ThreadGroup(“Parent thread”);          // creating a child ThreadGroup for parent ThreadGroup          ThreadGroup g2 = new ThreadGroup(g1, “child thread”);                    // creating a thread           JavaDestroyExp t1 = new JavaDestroyExp(“Thread-1”, g1);          // creating another thread           JavaDestroyExp t2 = new JavaDestroyExp(“Thread-2″, g1);                    // block until other thread is finished          t1.join();          t2.join();             // destroying child thread          g2.destroy();          System.out.println(g2.getName() + ” destroyed”);                    // destroying parent thread          g1.destroy();          System.out.println(g1.getName() + ” destroyed”);      }  }  

Test it Now

Output:

Thread-1 finished executing  Thread-2 finished executing  child thread destroyed  Parent thread destroyed

Next TopicMultithreading Java

getId()getName()java join resume()run setId()setName()sleep()start stop()thread yield()

Java Thread destroy() Method with Examples

Java Thread destroy() method

Syntax

Return

Exception

Example

Java Short equals() method with Examples

Java Date after() Method with Examples

You may also like