When The category is declared in the package deal such as com.acme.case in point, Then you definately ought to use the full classname which includes all classes and interfaces from the superclass hierarchy (e.g. see Java class is current in classpath but startup fails with Mistake: Couldn't come across or https://emiliozzxwu.blogsvirals.com/32945137/examine-this-report-on-uninterruptible-power-supply-ups