destruct inside construct

[BubikolRamios]

since I call this from many pages, not knowing if
session object called "sessionObject" already exists, I do each time:

SessionObject sessionObject= new SessionObject(request);

package mc.session.objects;

public class sessionObject
{
  ....  
  public sessionObject(HttpServletRequest req) throws Throwable
  {
      HttpSession session = req.getSession(true);
      if (session.getAttribute("sessionObject") != null)
      {
        // destruct this object as one instance of it, and only one 
        // that I need is already created
        super.finalize();
      }
  }

Anything that I don't see here ?

Hope this "sessionObject" gets collected by gc
at the time session ends.

[Old Pedant]

I wouldn't do it this way, at all.

I'd use a singleton. That is, a class where only one instance of it *can* be created.

Look up "singleton pattern" in the docs.