Java Threadgroup | Java Multithreading (Java Tutorial)

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******************** 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.

ThreadGroup methods:
→ activeCount() - Returns an estimate of the number of active threads in this thread group and its subgroups. Recursively iterates over all subgroups in this thread group.
The value returned is only an estimate because the number of threads may change dynamically while this method traverses internal data structures,
might be affected by the presence of certain system threads. This method is intended primarily for debugging and monitoring purposes.

→ activeGroupCount - Returns an estimate of the number of active groups in this thread group and its subgroups. Recursively iterates over all subgroups in this thread group.
The value returned is only an estimate because the number of thread groups may change dynamically while this method traverses internal data structures.
This method is intended primarily for debugging and monitoring purposes.

→ getName() - Returns the name of this thread group.

→ getParent() - Returns the parent of this thread group.
First, if the parent is not null, the checkAccess method of the parent thread group is called with no arguments this may result in a security exception.

→ destroy() -Destroys this thread group and all of its subgroups. This thread group must be empty, indicating that all threads that had been in this thread group have since stopped.
First, the checkAccess method of this thread group is called with no arguments this may result in a security exception.


For more details & source code check out: https://programmingline.com/2019/02/java-thread-group.html

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