“Error: Could not find or load main class” JavaFX Terminal

问题

I'm using the following class from my JavaFX Tutorial:

import javafx.application.Application;
import javafx.stage.Stage;

public class HelloFXApp extends Application {
    public static void main(String[] args) {
        // Launch the JavaFX application
        Application.launch(args);
    }

    @Override
    public void start(Stage stage) {
        stage.setTitle("Hello JavaFX Application");
        stage.show();
    }
}

I'm using Ubuntu and I have the correct path to my .java file in my Terminal..
When I type "javac HelloFXApp.java" it works fine and a new "HelloFXApp.class" file is created. but when I try "java HelloFXApp" I receive the following error:

Error: Could not find or load main class HelloFXApp

I checked my Java version by typing "java -version" and it looks like I have the latest one:

java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) Server VM (build 25.45-b02, mixed mode)

Please tell me if I missed something! Thank you in advance..

回答1:

You are missing the package while firing java command. (Implied from the comments, since it is not included in the question)

After compiling, navigate back to src folder and append the package to your class name :

java com.jdojo.intro.HelloFXApp

回答2:

Go and rename the project and it will work

来源：https://stackoverflow.com/questions/30230219/error-could-not-find-or-load-main-class-javafx-terminal