Scala example source code file (caseclasses.scala)

This example Scala source code file (caseclasses.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

abs, abs, bar, base, c, c, foo, int, int, no, nullpointerexception, ok, string, string

The Scala caseclasses.scala source code

case class Foo(x: Int)(y: Int)

case class Bar

abstract class Base
abstract case class Abs(x: Int) extends Base

object M {
  abstract case class C(x: String) {}
  object C extends (String => C) {
    def apply(x: String): C = {
      println("creating C("+x+")")
      new C(x) {}
    }
  }
}

object Test extends App {

  def Abs(x: Int) = new Abs(x * 2){}
  Abs(2) match {
    case Abs(4) => ;
  }

  def fn[a,b](x: a => b) = x;
  val f = fn(Foo(1))
  (f(2): AnyRef) match {
    case Foo(1) => Console.println("OK")
    case Bar() => Console.println("NO")
  }
  try {
    Bar() productElement 3
    throw new NullPointerException("duh")
  } catch {
    case x:IndexOutOfBoundsException =>
  }

  M.C("hi") match {
    case M.C("hi") => println("OK")
    case _ => println("NO")
  }

  try {
    f(2) productElement 3
    throw new NullPointerException("duh")
  } catch {
    case x:IndexOutOfBoundsException =>
  }

}