Custom thread pools

gistfile1.java

ThreadPoolExecutor pool = 
       new ThreadPoolExecutor(0, 50, 
                              60, TimeUnit.SECONDS, 
                              new SynchronousQueue<Runnable>());
pool.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());

ThreadPoolExecutor pool = 
       new ThreadPoolExecutor(50, 50, 
                              0L, TimeUnit.MILLISECONDS, 
                              new LinkedBlockingQueue<Runnable>(100000));
pool.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());