Scala example source code file (protected-t1010.scala)

This example Scala source code file (protected-t1010.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

fileimpl, fileimpl, none, none, presentations, presentationsx, presentationsx, projectimpl, projectimpl, some, t

The Scala protected-t1010.scala source code

/** Check protected accessors involving polymorphic methods. */

package pkg2 {

trait PresentationsX extends pkg1.Presentations {
   trait ProjectImpl extends super.ProjectImpl {
     trait FileImpl extends super.FileImpl {
       lockTyper(Console.println)
     }
   }
}

} // pkg2

package pkg1 {

trait Presentations {
   trait ProjectImpl {
     trait FileImpl
     protected def lockTyper[T](f : => T) = {
       if (this == null) None
       else Some(f)
     }
   }
}

} // pkg1