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Syed,
On 6/7/2009 12:53 PM, syed shah wrote:
> I want to enforce single instance creation for the servlet because I have
> some code that serves the user requests and i want to implement caching and
> handle synchronization myself, thanks and best regards Fahad
Usually, only one instance of your servlet will be created. You could
write some code to check for this, of course.
Something like this should work:
public class MyServlet extends HttpServlet
{
private static boolean _isInUse;
public MyServlet()
throws ServletException
{
super();
synchronized(getClass()) {
if(_isInUse) {
throw new ServletException("Sorry, only one at a time");
}
_isInUse = true;
}
}
...
public void destroy()
{
synchronized(getClass()) {
_isInUse = false;
}
}
}
I'm not actually sure why you'd ever want to do this, though. :(
- -chris
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