Assuming that you have Beryl installed and configured, it is known that Netbeans will start and display a blank screen. This is due to the fact that Beryl doesn’t support SWT yet. This is a workaround this situation:
#yum install libXp
assuming you're using bash $ echo "export AWT_TOOLKIT='MToolkit'" >> ~/.bashrc $ echo "export AWT_TOOLKIT='MToolkit'" >> ~/.bash_profile $source ~/.bashrc $~/.bash_profile
and this should work.