B4J Question Runtime error on all my B4J apps

[wdegler]

I have written several B4J apps which have run correctly.

Now, when I return to any of them and recompile them (in Debug mode), they recompile all right but a runtime error immediately occurs:

java.lang.ExceptionInInitializeError
Caused by: Java.lang.RuntimeException.java.lang.
NoClassDefFoundError.javafx/scene/control.Dialog
at anywheresoftware.b4a.BA.raiseEvent2 ...

None of these apps define or use classes. Can someone let me know what the problem is?

 

[Erel]

You need Java 8u40+.

 

[wdegler]

Thanks to you, LucusMs and Erel. You nailed it! I needed to update Java.
I downloaded jdk1.8.0_102 to C:\Program Files\Java and my b4j apps work now.
Thanks.

 

[wdegler]

Pardon my spelling; I see that it is LucaMs.