Edit Question - KnowledgeHub

Title Body

I am trying a very simple use of JavaFX using a simple set of lines of code which I got from another stackoverflow page ( here ). But, the problem is clearly not with that code but with something more fundamental in the build and run process. Here is my code: import javafx.scene.media.Media; import javafx.scene.media.MediaPlayer; . . . Media medMsg = new Media("msg.mp3"); MediaPlayer medplMsg = new MediaPlayer(medMsg); medplMsg.play(); At first I couldn't get this to compile at all. Eventually I figured out that I needed to put -classpath c:\Program Files\Oracle\JavaFX 2.1 SDK\lib\rt\jfxrt.jar on my javac command line. (One obvious complex of questions here is: Why isn't it documented in any obvious place (1) that this is needed and (2) how exactly to figure out what the path to the JavaFX installation is?!) But, when I run the code I get: Exception in thread "main" java.lang.NoClassDefFoundError: javafx/scene/media/Media at progtest.main(progtest.java:120) Caused by: java.lang.ClassNotFoundException: javafx.scene.media.Media at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 1 more What does this mean? It looks like it doesn't know, at runtime, how to find the class javafx.scene.media.Media. But, my %CLASSPATH% variable definitely has "c:\Program Files\Oracle\JavaFX 2.1 SDK\lib\rt\jfxrt.jar" in it. Any ideas? Thank you in advance!

Tags (comma-separated) Cancel