Thread Group In Java | Thread Group Example In Java |Thread Group In Hindi In Java

ThreadGroup in Java

Java provides a convenient way to group multiple threads in a single object. In such way, we can suspend, resume or interrupt group of threads by a single method call.

Java thread group is implemented by java.lang.ThreadGroup class.

A ThreadGroup represents a set of threads. A thread group can also include the other thread group. The thread group creates a tree in which every thread group except the initial thread group has a parent.

A thread is allowed to access information about its own thread group, but it cannot access the information about its thread group's parent thread group or any other thread groups.

Fig: Thread Group In Java 

ThreadGroup Example

File: ThreadGroupDemo.java

   public class ThreadGroupDemo implements Runnable{  

    public void run() {  

          System.out.println(Thread.currentThread().getName());  

    }  

     public static void main(String[] args) {  

      ThreadGroupDemo runnable = new ThreadGroupDemo();  

          ThreadGroup tg1 = new ThreadGroup("Parent ThreadGroup");  

            

          Thread t1 = new Thread(tg1, runnable,"one");  

          t1.start();  

          Thread t2 = new Thread(tg1, runnable,"two");  

          t2.start();  

          Thread t3 = new Thread(tg1, runnable,"three");  

          t3.start();  

               

          System.out.println("Thread Group Name: "+tg1.getName());  

         tg1.list();  

  

    }  

   }  

Output:

one

two

three

Thread Group Name: Parent ThreadGroup

java.lang.ThreadGroup[name=Parent ThreadGroup,maxpri=10]

    Thread[one,5,Paq