determine if running on client or server OR synchronize time on server/client?

Hi,

my chess application should trust only the server time.

However, I have a "shared" class that is used both on server and client. Within this class I determine the current time by creating a new Date object.

When running on the server, this object represents the correct time. When running on the client, I would like to synchronize it with the server before using it.

But how can I tell if I am running on the server or the client?

Below is a short pseudo code for illustration.

Thanks

Magnus

-----

class ChessClock

{

 ...

 private int offset; // "delta" between server and client time

 ...

 private Date getCurrentTime ()

 {

  Date d = new Date ();

  if (!runningOnServer ())

  {

   long ms = d.getTime () + offset;

   d = new Date (ms);

  }

 }

 private boolean runningOnServer ()

 {

  // how to determine???

 }

 

}

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