As far as I know Netbeans is always one version  higher that Java Forte.
If your consideration is speed, Eclipse may be a good choice.

Speed also matters and looking for some open  source
IDE as well good enough for GUI development.Currently
im using Java swing for user interface and i want to
integrated to SOAP + Tomcat..in the middle tier ...

Will it provides by Eclipse??

Net beans is very good IDE and it is free.check at the url
http://www.netbeans.org/

Forte has renamed to
Sun ONE Studio 4 update 1
, the Community Edition is free .
you can download from here
wwws.sun.com/software/sundev/jde/buy/index.html

For your case, using Eclipse will need extra plug-ins such as Lomboz
(free, for Tomcat integration) and V4ALLAssisi for GUI Designer (free
for beginner edition).
However, it seems that Netbeans provides all the functionalities above.
But one thing, I have never thought the GUI editor in Netbeans could be
as good as Visual Basic/Delphi, and hopefully in the near future it
could evolve to that stage.
However, if you are interested. There are some software for java  GUI
editor based on Java beans (it generated .xml for the GUI layout). You
can get Bean Builder in SUN website or JBeaver (this is not free).
However, I haven't figure out how to generate my java source  code based
on the xml file Bean Builder generated.