Get currently running thread objects from ExecutorService

Question

I am using ExecutorService (Globally declared) to run multithread at the same time. ExecutorService will take one hour to complete the task. So I need to get the currently running thread details like active thread , queued thread and completed thread .

And when I kill the ExecutorService , the ExecutorService killed but the thread running in background. So before kill the ExecutorService , I need to get the thread object form ExecutorService and kill the thread manually using loop or iterator .

For Example:

ExecutorService has 5 threads.

Each thread has execute by invokeall(). Each thread will end after one hour.

But thing is I need to stop within 15 minutes by sending new request to server or call some method.

Here shutdown or shutdowNow stop the executor but not those 5 threads. That is the problem. So I need to kill those threads manually. How to kill the threads manually attached in executor service?

Answer 1

I found the solution, all threads are append in Callable, and invoke the Callable threads by using ExecutorService . ExecutorService only contains the value of active, queue and completed details. After execution the result will fetch the value using Future class.

Now, If I want to stop the execution before completion. I need to invoke callable object and convert into thread object and stop manually if thread not null. So Callable object also change as global variable. End execution remove those objects.