Bug in JavaFX

Loading CSS from an external Java FX Library gives

java.lang.NullPointerException: Cannot invoke “java.net.URL.toExternalForm()” because the return value of “java.lang.Class.getResource(String)” is null

Example class I tried to add to a library that worked before I added to the library

Free Starter Class MIT License

package commonController;

import javafx.application.Application;
import javafx.scene.Scene;

public class LoadCssCommand implements Runnable {
	private Scene scene;
	private Application application;
	
	public LoadCssCommand(final Application application, final Scene scene) {
		this.application = application;
		this.scene = scene;
	}
	
	@Override
	public void run() {		
		scene.getStylesheets().add(application.getClass().getResource("/main/resources/application.css").toExternalForm());
	}
}

Java has some substantial problems around Class Loading, if refined could lead to more widescale adoption of tool use

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