Scala example source code file (scoping3.scala)

This example Scala source code file (scoping3.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

ci, itreenode, itreenode, itreenodeexp, itreenodeexp, simpletreedisplay, treedisplay, treedisplay, treedisplayexp, treedisplayfinal, treenode, treenode, unit

The Scala scoping3.scala source code

object CI {
  trait TreeDisplay {
    type TreeNode <: ITreeNode
    trait ITreeNode {
      def display(): Unit
    }
  }

  trait TreeDisplayExp {
    def getRoot(): TreeNode
    type TreeNode <: ITreeNodeExp
    trait ITreeNodeExp {}
  }

  trait TreeDisplayFinal extends TreeDisplay with TreeDisplayExp {
    type TreeNode <: ITreeNode with ITreeNodeExp
  }
  abstract class SimpleTreeDisplay extends TreeDisplay { self: TreeDisplayFinal =>
    def display() { this.getRoot().display() }
  }
}