for netbean 12.0
/usr/libexec/javahome
/Library/Java/JavaVirtualMachines/jdk-12.jdk/Contents/Home
sudo vi /Applications/NetBeans/Apache\ NetBeans\ 12.0.app/Contents/Resources/NetBeans/netbeans/etc/netbeans.conf
then search for netbeansjdkhome
add the below line just below the search line or replace.
netbeans_jdkhome="/Library/Java/JavaVirtualMachines/jdk-12.jdk/Contents/Home"
DaJohny
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