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when I try to run my application, nothing is displayed inside of its initial (login) JFrame. Everything inside the JFrame is missing and is *totally transparent* to whatever is behind the JFrame window. When I clicked on the icon at the very bottom right of the IDE window, a dialog came up displaying a java.lang.NullPointerException error and instructed me to file an issue report with the IDE's log file. This is a new computer with Windows Vista o/s. I installed Netbeans 6.5 and all of its updates (which were two separate update events - after the reboot from/after the first update, Netbeans said there was another set of updates). If you want to know what the initial login frame looks like, it is a slightly newer version of the application runnable from: www.gvsi.com. My projects' source code inside of NetBeans worked just the day before on my (older PC system) Windows XP Professional PC. I tried changing Vista's Aero settings: Personalization > Window Color and Appearance > Enable transparency disabled & "Open classic appearance properties for more color options" The first did nothing. The classic appearance applied two visibly different changes to the windows. After the second visual changes, I could finally see what was inside the JFrame, but could NOT get keyboard focus into either of the login text boxes. Trying to exit out of the login JFrame brings up a similarly empty transparent dialog that should ask if I'm sure I want to exit. Every windows application, e.g. Firefox, StarTeam Client, notepad, calculator, IE, windows explorer, etc., work and display just fine. The NetBeans IDE appears to work just fine too -- at least until I try to run my application.
Created attachment 77663 [details] Messages.log
Created attachment 77664 [details] Same Login JFrame with 4 Different Backgrounds
Created attachment 77665 [details] NetBeans Error Dialog & Details NPException
The transparent inside of my JFrame windows is no longer an issue. I found that part was due to including -Dsun.java2d.opengl=True in my Run VM Options. Once I took this out, my windows now display correctly. I guess my new NVIDIA Quadro FX570 must not support Java with open gl, despite NVIDIA saying that it does support OpenGL 2.1. (I will also look to see if my driver needs updating or is defective.) So, please ignore that part of this issue. The only issue remaining is the null pointer exception which is not currently a problem for me. I uninstalled NetBeans and re-installed it and did NOT apply the two updates. Possibly that is why I do not get the NPE's or perhaps that's something else.
Looks like this is related to tasklist component though I'm not sure. Could anybody working on tasklist component please take a look at the stacktrace attached? Thank you.
*** This issue has been marked as a duplicate of 143964 ***