Java ThreadGroup checkAccess() method

Last Updated : 17 Mar 2025

The activeCount() method of ThreadGroup class determines if the currently running thread has permission to modify the thread group.

Syntax

Return

It doesn't return any value.

Exception

SecurityException: This exception throws if the current thread is not allowed to access the thread group.

Example

Output:

Parent thread has access
child thread has access
Thread-1 finished executing
Thread-2 finished executing