import com.atlassian.util.concurrent.*;
import java.util.concurrent.*;
public class ThreadPoolExample {
public static void main(String[] args) {
ExecutorService executor = Executors.newCachedThreadPool();
ConcurrentHashSet<String> set = new ConcurrentHashSet<String>();
Semaphore semaphore = new Semaphore(10);
for (int i = 0; i < 100; i++) {
executor.submit(() -> {
try {
semaphore.acquire();
set.add(Thread.currentThread().getName());
Thread.sleep(100);
semaphore.release();
} catch (InterruptedException e) {
e.printStackTrace();
}
});
}
executor.shutdown();
try {
executor.awaitTermination(1, TimeUnit.MINUTES);
} catch (InterruptedException e) {
e.printStackTrace();
}
set.forEach(System.out::println);
}
}
