ListenableFuture demo

import java.util.Arrays;import java.util.List;import java.util.concurrent.Callable;import java.util.concurrent.ExecutionException;import java.util.concurrent.Executors;import com.google.common.collect.Lists;import com.google.common.util.concurrent.Futures;import com.google.common.util.concurrent.ListenableFuture;import com.google.common.util.concurrent.ListeningExecutorService;import com.google.common.util.concurrent.MoreExecutors;import com.sun.xml.internal.bind.v2.runtime.unmarshaller.XsiNilLoader.Array;public class ListenableFutureTest2 {public static void main(String[] args) throws InterruptedException,ExecutionException {ListeningExecutorService executor = MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(1));final ListenableFuture<String> future = executor.submit(new Callable<String>() {public String call() throws Exception {return "Hello listenable future";}});final ListenableFuture<String> future2 = executor.submit(new Callable<String>() {public String call() throws Exception {Thread.sleep(10000);return "Hello listenable future2";}});List<ListenableFuture<String>> futures = Lists.newArrayList();futures.add(future);futures.add(future2);ListenableFuture<List<String>> futureAll = Futures.successfulAsList(futures);System.out.println(Arrays.toString(futureAll.get().toArray()));System.out.println("exit..");}}