Re: An Executor-like structure providing more than threads

Tom Anderson <>
Thu, 21 Jan 2010 23:06:28 +0000
On Sat, 16 Jan 2010, Roedy Green wrote:

On Sun, 17 Jan 2010 01:11:36 +0000, Tom Anderson
<> wrote, quoted or indirectly quoted someone who
said :

Any thoughts? What's the right way to do this?

Does Executor dispense just raw Threads or you can you get it to
dispense your custom Thread class? If so, your thread constructor could
allocate the extra goodies.

I can, and that's exactly what it does:

ExecutorService executor = Executors.newFixedThreadPool(numThreads);
((ThreadPoolExecutor)executor).setThreadFactory(new DownloadThreadFactory());

public class DownloadThreadFactory implements ThreadFactory {
  HttpConnectionManager connMgr = new MultiThreadedHttpConnectionManager();

  public Thread newThread(Runnable r) {
  return new DownloadThread(connMgr, r);

public class DownloadThread extends Thread {
  private final HttpClient client;
  private byte[] buffer;

  public DownloadThread(HttpConnectionManager connMgr, Runnable r) {
  client = new HttpClient(connMgr);
  buffer = new byte[1024];


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