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java.lang.Object
   |
   +----kh.util.PeriodicTask

Summary

public abstract class  PeriodicTask
     extends java.lang.Object
     implements java.lang.Runnable
{
          // Fields 2
     protected long initialDelta;
     protected long period;

          // Constructors 1
     public PeriodicTask(long, long);

          // Methods 5
     public Thread getThread();
     public String getThreadName();
     protected abstract void periodicTask();
     public void run();
     public void start();
}

This class provides an easy way to invoke a method on a set schedule. Every period the method periodTask() will be invoked. Each perios is a set number of ms apart, with the first period being delayed by a seperate initialDelta in ms. This initial delta is designed to stagger the start of a number of objects which are created at the same time.

Fields

· initialDelta

Summary  |  Top

   protected long initialDelta

   protected long period

Constructors

· PeriodicTask

Summary  |  Top

   public PeriodicTask(long period, 
                       long initialDelta) 

Creates a PeriodicTask, see the class documentation for more info. NOTE: the task is not started until start() is invoked.

   public Thread getThread() 

Returns the thread which is responsible for this periodic task

   public String getThreadName() 

Returns the name we should give our thread

   protected abstract void periodicTask() 

This method is invoked once per period.

   public void run() 

Our thread. We block for 24 hrs at a time, then do a backup.

Implements:

run in interface Runnable

   public void start() 

Starts running our task - NOTE: We allow start to work on a already running task.

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