scala_tutorial

Scala
Implicit classes may not be any method, member or object in scope with the same
name as the implicit class.
Singleton Objects
Scala is more object-oriented than Java because in Scala, we cannot have static members.
Instead, Scala has singleton objects. A singleton is a class that can have only one instance,
i.e., Object. You create singleton using the keyword object instead of class keyword. Since
you can't instantiate a singleton object, you can't pass parameters to the primary constructor.
You already have seen all the examples using singleton objects where you called Scala's main
method.
Following is the same example program to implement singleton.
import java.io._
class Point(val xc: Int, val yc: Int) {
var x: Int = xc
var y: Int = yc
def move(dx: Int, dy: Int) {
x = x + dx
y = y + dy
}
}
object Demo {
def main(args: Array[String]) {
val point = new Point(10, 20)
printPoint
def printPoint{
println ("Point x location : " + point.x);
println ("Point y location : " + point.y);
}
}
}
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