Adjudicated Guilty / Delinquent in Juvenile Court
When this charge appears it simply means that the person was adjudicated guilty in a regular court  or found guilty in juvenile court.

It usually has nothing to do with juvenile court. That is just the way the statute reads.

NOTE: Florida law allows juveniles to be charged as adults by grand jury indictment, by the state filing of Information in adult court or by the court transferring a juvenile case to the adult court upon motion by the State.