Scala example source code file (bug0017.scala)

This example Scala source code file (bug0017.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

adder, adder, array, constraint, constraint, main, quantity, quantity, unit, unit

The Scala bug0017.scala source code

class Quantity {
    def getValue = 0;
    def connect(c: Constraint) = c.newValue;
}

abstract class Constraint(q: Quantity) {
    def newValue: Unit;
    q connect this
}

class Adder(q: Quantity) extends Constraint(q) {
    def newValue = Console.println(q.getValue);
}

object Main {
    def main(args: Array[String]): Unit = {
        val x = new Quantity;
        new Adder(x);
        ()
    }
}