javaFX, throws NullPointerException, Location is required

Question

i have seen other answers but nothing have helped me

(sorry new to GUI only know basics of swing)

this is main class

package application;

imp         


        

Answer 1

try{    
scene.getStylesheets().add(new File(pathTocssFile).toURI().toURL().toExternalForm());
} catch (MalformedURLException e) {
e.printStackTrace();}

Answer 2

getClass().getClassLoader().getResource(...) will load a resource from a path relative to the classpath. Since you placed the FXML file in the application pacakge, you need:

Parent root=FXMLLoader.load(getClass().getClassLoader().getResource("application/Main.fxml"));

If you just use getClass().getResource(...), and do not prefix the path with /, it will load from a path relative to the current class. So

Parent root=FXMLLoader.load(getClass().getResource("Main.fxml"));

should also work.

Make sure that your FXML file is being exported to the build folder, along with the .class files.