Example of AsynchronousChannelGroup in Java NIO Channels

package com.concretepage.nio.channels;
import java.io.IOException;
import java.nio.channels.AsynchronousChannelGroup;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
public class AsynchronousChannelGroupTest {
	public static void main(String[] args) throws IOException, InterruptedException {
		Runnable r= new AsynchronousChannelGroupTest(). new SampleThread();
		ExecutorService service = Executors.newCachedThreadPool();
		service.execute(r);
		AsynchronousChannelGroup acg = AsynchronousChannelGroup.withCachedThreadPool(service, 2);
		
		System.out.println(acg.isShutdown());
		acg.awaitTermination(2,TimeUnit.SECONDS);
		acg.shutdownNow();
	}
	class SampleThread implements Runnable {
        @Override
        public void run() {
            for (int cnt =0; cnt<5 ; cnt++) {
                System.out.println("run:" + cnt);
            }
        }
    }
}