@Erum never work but google sample code

https://github.com/googlesamples/android-PdfRendererBasic

in doInBackground() method of AsyncTask I gave the name to thread
Thread.currentThread().setName("customName").

Now I know that this thread has a name,
Now Looping to check the available threads

for (Thread t : Thread.getAllStackTraces().keySet()) {
if (t.getName().contains("customName")) {

}
}

In this loop I am checking how many instances of customName Threads are created,

My question is How to remove the customName Thread from thread pool after execution.
The thread name customName should be displayed when I loop to check the thread.