Scala example source code file (attributes.scala)

This example Scala source code file (attributes.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

a1, a2, c1, c1, c2, c2, c3, c3, c4, c4, int, o3, o4, serialversionuid

The Scala attributes.scala source code

@serializable  class C1;
@serializable @volatile  class C2;
@serializable @volatile  class C3;
@serializable @volatile @serializable class C4;

@serializable  trait T1;
@serializable @volatile trait T2;
@serializable @volatile  trait T3;
@serializable @volatile @serializable trait T4;

@serializable  object O1 extends C1;
@serializable @volatile object O2 extends C2;
@serializable @volatile  object O3 extends C3;
@serializable @volatile @serializable object O4 extends C4;

object O5 {
  final val n = 2;
  @SerialVersionUID(0)  class C1;
  @SerialVersionUID(n)  class C2;
  @SerialVersionUID(0) @SerialVersionUID(n)  class C3;
  @SerialVersionUID(0) @SerialVersionUID(n)  class C4;
}

abstract class A1 {
  @serializable  var y1: C1;
  @serializable @volatile  var y2: C2;
  @serializable @volatile  var y3: C3;
  @serializable @volatile @serializable  var y4: C4;

  @serializable  def foo1: C1;
  @serializable @volatile  def foo2: C2;
  @serializable @volatile  def foo3: C3;
  @serializable @volatile @serializable  def foo4: C4;
}

object O6 {
  @serializable  val x1 = new C1;
  // volatile val sensibly disallowed as of r18645
  @serializable val x2 = new C2;
  @serializable val x3 = new C3;
  @serializable val x4 = new C4;

  @serializable  var y1: C1 = _;
  @serializable @volatile  var y2: C2 = _;
  @serializable @volatile  var y3: C3 = _;
  @serializable @volatile @serializable  var y4: C4 = _;

  @serializable  private def foo1 = x1;
  @serializable @volatile  private def foo2 = x2;
  @serializable @volatile  protected def foo3 = x3;
  @serializable @volatile @serializable  protected def foo4 = x4;
}

object myAttrs {
  class a1 extends scala.Annotation;
  class a2(x: Int) extends scala.Annotation;
  class a3(x: a1) extends scala.Annotation;
}
class a4(ns: Array[Int]) extends scala.Annotation;
object O7 {
  class a1 extends scala.Annotation;
  class a2(x: Int) extends scala.Annotation;
  class a3(x: a1) extends scala.Annotation;

  final val x = new a1;
  @a1  class C1;
  @a1 @a2(77)  class C2;
  @a1 @a2(88)  class C3;
  @a1 @a2(88) @a3(null)  class C4;

  @myAttrs.a1  class A1;
  @myAttrs.a1 @myAttrs.a2(99)  class A2;
  @myAttrs.a1 @myAttrs.a2(99)  class A3;
  @myAttrs.a1 @myAttrs.a2(99) @myAttrs.a3(null)  class A4;
  @a4(Array(1,2,3)) class A5;
  @a4(Array()) class A6;

  val zero = 0 : @myAttrs.a1
}