Netbeans autocomplete stopped working?

Question

I\'m using Netbeans 6.9.1, everything was just fine however suddenly, it has stopped detecting any changes made to the code, e.g new variables, functions, etc. If I try to refac

Answer 1

For those who use Netbeans 11.2, autocompletion could stop working if you set JDK 8 as default for running netbeans (netbeans_jdkhome in netbeans.conf) instead of newer JDK 13.