Re: Newbie Question: Help using JavaFX on Java 7 for Mac OS X 10.7.5...

I just downloaded and installed the Java7 update 7 JDK for Mac OS X via the convenient .dmg installer on the Oracle website. JavaFX SDK is supposed to be included

I want to get started on some example JavaFX applications...a simple HelloWorld app to get started using it and to verify that JavaFX works on my system. Here's the code for HelloWorld.java:

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class HelloWorld extends Application {

     @Override public void start(Stage stage) {
         Scene scene = new Scene(new Group(new Text(25, 25, "Hello World!")));

         stage.setTitle("Welcome to JavaFX!");
         stage.setScene(scene);
         stage.sizeToScene();
         stage.show();
     }

     public static void main(String[] args) {
         Application.launch(args);
     }
}

I tried compiling via standard javac HelloWorld.java and the following error occurs:

import javafx.application.Application;
                          ^
HelloWorld.java:2: error: package javafx.scene does not exist
import javafx.scene.Group;
                    ^
HelloWorld.java:3: error: package javafx.scene does not exist
import javafx.scene.Scene;
                    ^
HelloWorld.java:4: error: package javafx.scene.text does not exist
import javafx.scene.text.Text;
                         ^
HelloWorld.java:5: error: package javafx.stage does not exist
import javafx.stage.Stage;
                    ^
HelloWorld.java:7: error: cannot find symbol
public class HelloWorld extends Application {
                                 ^
   symbol: class Application
HelloWorld.java:9: error: cannot find symbol
     @Override public void start(Stage stage) {
                                 ^
   symbol: class Stage
   location: class HelloWorld
HelloWorld.java:10: error: cannot find symbol
         Scene scene = new Scene(new Group(new Text(25, 25, "Hello World!")));
         ^
   symbol: class Scene
   location: class HelloWorld
HelloWorld.java:10: error: cannot find symbol
         Scene scene = new Scene(new Group(new Text(25, 25, "Hello World!")));
                           ^
   symbol: class Scene
   location: class HelloWorld
HelloWorld.java:10: error: cannot find symbol
         Scene scene = new Scene(new Group(new Text(25, 25, "Hello World!")));
                                     ^
   symbol: class Group
   location: class HelloWorld
HelloWorld.java:10: error: cannot find symbol
         Scene scene = new Scene(new Group(new Text(25, 25, "Hello World!")));
                                               ^
   symbol: class Text
   location: class HelloWorld
HelloWorld.java:9: error: method does not override or implement a method from a supertype
     @Override public void start(Stage stage) {
     ^
HelloWorld.java:19: error: cannot find symbol
         Application.launch(args);
         ^
   symbol: variable Application
   location: class HelloWorld

It is obvious that it is not finding the JavaFX library to compile. I did a search and found that the jfxrt.jar file is required to compile and run it. But it is located inside of the folder:

/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib

which is inside of the JDK virtual machine folder for Java 7. I don't think there is any magic classpath command needed to compile this simple program but I could be wrong.