Re: [Threading to manage simulated printing jobs]

Here I have written a program which simulates a printing job in which
'Consumer' is a printing device or software and 'Producer' submits a
printing job. But the output I get is highly deterministic i.e. the
same everytime I don't even know if I have got it right or wrong. Some
comments / pointers / alternate designs / tips / revelations would be
greatly appreciated.

class Consumer {
    private Runnable job = new Runnable() {
        public void run() {
            // start consuming the print jobs and print them
            try {
                for (;;) {
                    //System.out.println("Inside run of producer");
                    Thread.sleep(10);
                    PrintJob job = queue.getJob();
                    if (job != null)
                        System.out.println(id + job.print());
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

     public Consumer(PrintQueue queue) throws Exception {

         t.join(); /* Does this even do anything? */

     }
}

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