Netbeans trick

If you update the JDK version, Netbeans 6.8 start bugging about the fact it doesn't find the JDK where it used to be. Instead of uninstalling just for this minor glitch, go to C:\Program Files\NetBeans 6.8\etc\, open the file netbeans.conf, find the line containing netbeans_jdkhome= and type the correct path to the new JDK (something like netbeans_jdkhome="C:\Program Files\Java\jdk1.6.0_20"). That's it.