This is an old post. The information it contains is probably out of date or innacurate
This is a post that was written a long time ago and is only being kept here for posterity. You should probably look up more recent blog posts related to the subject you are researching
If your Netbeans project is behaving a bit weirdly with regards to code auto completion then this little fix might be for you.
Netbeans maintains a cache folder and it looks like this can get corrupted sometimes and need clearing out.
Close Netbeans down, empty your $HOME/.netbeans/6.9/var/cache/ folder and then restart Netbeans and hopefully that should fix it