I can't execute none javafx

Question

create any javaFX proyect, but return always the same error, i work in debian lenny 5 with netbeans 6.8. i need resolve this situation, thanks for you help.
this is the error:
Exception in thread "main" java.lang.NoClassDefFoundError: com.sun.tools.javafx.Main
at gnu.java.lang.MainThread.run(libgcj.so.90)
Caused by: java.lang.ClassNotFoundException: com.sun.tools.javafx.Main not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:./], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
at java.net.URLClassLoader.findClass(libgcj.so.90)
at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj.so.90)
at java.lang.ClassLoader.loadClass(libgcj.so.90)
at java.lang.ClassLoader.loadClass(libgcj.so.90)
at gnu.java.lang.MainThread.run(libgcj.so.90)
ERROR: javafxc execution failed, exit code: 1
/home/jpescobar/NetBeansProjects/PruebaFX/nbproject/build-impl.xml:143: exec returned: 255
GENERACIÓN INCORRECTA (total time: 0 seconds)

Answer 1

this is the code example only creat the proyect and try to run, supposed run a litle windows with that text. When build or run this example return the error that show before.
package pruebafx;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.text.Text;
import javafx.scene.text.Font;
* @author jpescobar
Stage {
title: "Application title"
scene: Scene {
width: 250
height: 80
content: [
Text {
font : Font {
size : 16
x: 10
y: 30
content: "Application content"
}