Scala example source code file (lazyvals.scala)

This example Scala source code file (lazyvals.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

a, a, b, c, double, int, int, lazy, lazy, o, object, object, t, t2

The Scala lazyvals.scala source code

/** Test which should fail compilation */
class Lazy {
  
  // no abstract lazy values
  lazy val t: Int

  // no lazy var
  lazy var p: Int = 100

  // no lazy defs
  lazy def q: Double = 0.0

  def foo {
    lazy val t;
    ()
  }

  // no trait/class/object can be lazy
  lazy trait T {}
  lazy class C {}
  lazy object O {}

  // no lazy modifiers in class parameters
  class A(lazy val obj: Object) {}
}

object T2 {
  class A {
    val x: Int = { print("/*A.x*/"); 2 }
    lazy val y: Int = { print("/*A.y*/"); 2 }
  }

  
  class B extends A {
    // lazy overrides strict val
    override lazy val x: Int = { print("/*B.x*/"); 3 }
    // strict val overrides lazy
    override val y: Int = { print("/*B.y*/"); 3 }
  }
}