We have a service method GetDataParallel( ) which maybe called by many clients currently, and we use the ExecutorService to called the MyCallable inside it. However I found unless I called the executorService.shutdown(); the application never exit, so why the application cannot exit , we must shut down all thread pool threads manually before the application exit? and in service environment I think we don't need to call the executorService.shutdown(); to keep the application alive, right ?
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class MultiThreading {
static ExecutorService executorService = Executors.newFixedThreadPool(100);
private List _BusinessUnits= new ArrayList();
public static void main(String[] args) throws Exception {
MultiThreading kl =new MultiThreading();
kl.GetDataParallel();
Thread.sleep(10000);
System.out.println("111111111");
//executorService.shutdown();
}
public void GetDataParallel( ) throws Exception
{
_BusinessUnits.add("BU1");
_BusinessUnits.add("BU2");
_BusinessUnits.add("BU3");
for(final String v : _BusinessUnits)
{
ExecutorServiceTest.executorService.submit( new MyCallable());
}
}
}
class MyCallable implements Callable {
@Override
public String call() throws Exception {
Thread.sleep(1000);
//return the thread name executing this callable task
System.out.println(Thread.currentThread().getName());
return Thread.currentThread().getName();
}
}
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