Re: email w/timer -- how to test if successful

From:
Michael Rauscher <michlmann@gmx.de>
Newsgroups:
comp.lang.java.help
Date:
Mon, 08 Jun 2009 22:24:44 +0200
Message-ID:
<h0js2d$p99$03$1@news.t-online.com>
maya wrote:

boolean success = timer.schedule(task,reminderDate);
   if (!success) {
      out.println("success");
   } else {
      out.println("error");
  }

I get error:

    cannot convert from void to boolean


Of course, since Timer#schedule does not return a boolean value.

how can I generate stmts based on whether or not timer task was executed
successfully please....


There are a lot of possibilities. A simple one would be to add callback
methods to the enclosing class, something like this:

class A {
     void doSomethingInteresting() {
         TimerTask task = new TimerTask() {
             public void run() {
                 try {
                     tr.send(message);
                     taskDone();
                 } catch (Exception e) {
                     taskFailed(e);
                 }
             }
         };
         // ...
     }

     void taskDone() {
         System.out.println("Message sent successfully");
     }

     void taskFailed(Exception ex) {
         ex.printStackTrace();
     }
}

Bye
Michael

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