/*
* Futures.java
*
* Copyright (c) 2009, Ralf Biedert All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer. Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of the author nor the names of its contributors may be used to endorse or
* promote products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
package net.xeoh.plugins.sandbox;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorCompletionService;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
* @author rb
*
*/
public class Futures {
/**
* @param args
*/
@SuppressWarnings("unchecked")
public static void main(String[] args) {
// Execute collection asynchronously
ExecutorService newCachedThreadPool = Executors.newCachedThreadPool();
final ExecutorCompletionService<String> ecs = new ExecutorCompletionService(newCachedThreadPool);
Future<String> submit = ecs.submit(new Callable<String>() {
public String call() {
try {
Thread.sleep(1012331872);
} catch (InterruptedException e) {
e.printStackTrace();
}
return "Yo";
}
});
// Wait at most half a second (TODO: Make this configurable)
try {
String string = submit.get(500, TimeUnit.MILLISECONDS);
if (string == null) {
System.out.println("OOPs");
return;
}
System.out.println("Okay " + string);
} catch (final InterruptedException e) {
System.err.println("Error while waiting for a getRemoteProxy() result");
e.printStackTrace();
} catch (final ExecutionException e) {
e.printStackTrace();
} catch (final TimeoutException e) {
e.printStackTrace();
} catch (final SecurityException e) {
e.printStackTrace();
} finally {
System.out.println("Cancelling");
newCachedThreadPool.shutdownNow();
submit.cancel(true);
}
System.out.println("xx");
}
}