Cannot resolve symbol FXRadioButton'

The error message "Cannot resolve symbol FXRadioButton" typically means that the compiler cannot find the class or symbol named "FXRadioButton". This can happen if you haven't imported the necessary package or if there is a typo in the class or symbol name.

To resolve this issue, make sure you have imported the correct package that contains the FXRadioButton class. In JavaFX, the FXRadioButton class is part of the javafx.scene.control package. So, you should add the following import statement at the top of your Java file:

import javafx.scene.control.FXRadioButton;

If you have already imported the correct package but still encounter this error, double-check that the spelling and capitalization of the class name are correct. Class and symbol names in Java are case-sensitive, so make sure you use the correct capitalization.

If you continue to experience issues, please provide more details about your code so that I can assist you further.