Clean Uninstall mo si netbeans then kumuha ng
Java SE 8 or SE 11 SE means Standard Edition
then Install mo ulit si Netbeans pero install first the Java SE before Netbeans
Matagal na nung huli ko gamitin netbeans. Pero hindi na yata available C++ plugin sa latest release? Try mo eclipse o codeblocks, o kaya plain text editor.