Warning of Illegal Reflective access

Hi, I installed Netbeans from the official sh script from the website in my latest KDE Neon. When I launched the app from the terminal, I got the following warning:

{{WARNING: An illegal reflective access operation has occurred }}
{{ WARNING: Illegal reflective access by org.netbeans.core.windows.view.ui.MainWindow (jar:file:/home/yash/netbeans-12.0/netbeans/platform/modules/org-netbeans-core-windows.jar!/) to field sun.awt.X11.XToolkit.awtAppClassName }}
{{ WARNING: Please consider reporting this to the maintainers of org.netbeans.core.windows.view.ui.MainWindow }}
{{ WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations }}
{{ WARNING: All illegal access operations will be denied in a future release}}