How to reschedule a task using timer?
You cannot use the same TimerTask in one or several Timer.
You need to create a new instance of the TimerTask to be executed:
t.cancel();t = new Timer();TimerTask newTask = new MyTimerTask(); // new instancet.schedule(newTask, timeDelay);
Are you sure that Timers are the way to go? It sounds like you should listen for messages with a maximum wait time. Something like this (pseudo-code);
boolean timeout = false;while (!timeout) { // Read a message within 30 seconds try { Message msg = consumer.receive( 30000 ); } catch (JMSException jmse) { timeout=true; } // Process the message here process(msg);}// Timed-out while waiting for a message, so process messages in the queueprocessQueue();Put this in a function and call it repeatedly. Wrap it inside of a Thread or Runnable if you need multi-threaded capabilities.
Reuse your Timer, and recreate your TimerTasks after cancelling them. Store tasks so that they can be cancelled later.