Thank you for the reply, but now I can see, I don't know the inner world of the java. Now I have next question, how to get the right context?
I tried a lot of, i.e.:
Dim cls As String = Main.Mainme 'this part runs in a service, the main.mainme is the main activity Me, but local Me is also wrong
cls = cls.SubString("class ".Length)
Dim joc As JavaObject
'joc.InitializeStatic(cls)
joc.InitializeNewInstance (cls, Null)
Dim context As JavaObject = Main.MainMe 'joc.GetFieldJO("processBA")
Log(StorageVolume.RunMethod("getDescription", Array As Object(context)))
but neither good: all resulted an "java.lang.RuntimeException: Method: getDescription not matched.". I see, that neither of my context right as param of getDescription.