Hi,
some of our customers complain about an error "JavaFX Launcher Error: unable to load jar". Appearently it only occurs at very few of our customers.
First, does anybody have a hint, what it could be?
Second, how can I properly log such an error with stracktrace?
I once tried to log errors, which occur during startup, but wasn't able to, because the JavaFX Packager brings his own main method.
Therefore we initialize our logger in the Application's start method, which is to late for startup errors.
If I execute the program from console ("java -jar *.jar") I get a stacktrace, e.g.
Exception in Application constructor
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.javafx.main.Main.launchApp(Main.java:642)
at com.javafx.main.Main.main(Main.java:805)
Caused by: java.lang.RuntimeException: Unable to construct Application instance: class *******
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:393)
at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:47)
at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:115)
at java.lang.Thread.run(Thread.java:724)
Caused by: java.lang.NoClassDefFoundError: ...
(e.g. when my manifest contains wrong classpath entries)
Are there any ways to find the real cause of the above error? Did JavaFX write some log file anywhere?
