March 2014 update

Task/Classes/Scala/classes.scala

@@ -1,19 +1,24 @@
-/**
- * This class implicitly includes a constructor which accepts an int and
- * creates "val variable1: Int" with that value.
+/** This class implicitly includes a constructor which accepts an Int and
+ *  creates "val variable1: Int" with that value.
  */
-class MyClass(variable1: Int) {
-    var variable2 = "asdf" // Another instance variable; a var this time
-    def this() = this(0) // An auxilliary constructor that instantiates with a default value
-    def myMethod = variable1 // A getter for variable1
+class MyClass(val myMethod: Int) { // Acts like a getter, getter automatically generated.
+  var variable2 = "asdf" // Another instance variable; a public var this time
+  def this() = this(0) // An auxilliary constructor that instantiates with a default value
 }
 
-/**
- * Demonstrate use of our example class.
- */
-object Main extends Application {
-    val m = new MyClass()
-    val n = new MyClass(3)
-    println(m.myMethod) // prints 0
-    println(n.myMethod) // prints 3
+object HelloObject {
+  val s = "Hello" // Not private, so getter auto-generated
+}
+
+/** Demonstrate use of our example class.
+ */
+object Call_an_object_method extends App {
+  val s = "Hello"
+  val m = new MyClass()
+  val n = new MyClass(3)
+
+  println(HelloObject.s) // prints "Hello" by object getterHelloObject
+
+  println(m.myMethod) // prints 0
+  println(n.myMethod) // prints 3
 }