Java Thread getThreadGroup() method
The getThreadGroup() method of thread class is used to return the thread's thread group to which this thread belongs. This method returns null if this thread has died (been stopped).
This method returns the thread group of the thread.
ExampleTest it Now
Thread-1 is a member of ThreadGroup Thread-2 is a member of AnotherGroup javatpoint javatpoint
The above example use getThreadGroup() method of Thread class to get the object of ThreadGroup then use the getName() method to get the name of the thread group.