Scala example source code file (t3038d.scala)

This example Scala source code file (t3038d.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, any, any, anyref, array, array, bar, bar, foo, foo, test

The Scala t3038d.scala source code

trait Foo {
  @transient protected var load = 1
  @transient protected var a = 12

  protected def init[B](in: java.io.ObjectInputStream) {
    in.defaultReadObject
    load = in.readInt
    val sizea = in.readInt
    a = 12
  }

  protected def serializeTo(out: java.io.ObjectOutputStream) {
    out.defaultWriteObject
    out.writeInt(load)
    out.writeInt(a)
  }
}


@serializable
class Bar extends Foo {
  @transient protected var first: Any = null
  def size = a
  @transient var second: Any = null
    
  def checkMember { first }
    
  private def writeObject(out: java.io.ObjectOutputStream) {
    serializeTo(out)
  }
  
  private def readObject(in: java.io.ObjectInputStream) {
    first = null
    init(in)
  }
}

object Test {
  private def toObject[A](bytes: Array[Byte]): A = {
    val in = new java.io.ObjectInputStream(new java.io.ByteArrayInputStream(bytes))
    in.readObject.asInstanceOf[A]
  }
  
  private def toBytes(o: AnyRef): Array[Byte] = {
    val bos = new java.io.ByteArrayOutputStream
    val out = new java.io.ObjectOutputStream(bos)
    out.writeObject(o)
    out.close
    bos.toByteArray
  }

    
  def main(args: Array[String]) {
    val a1 = new Bar()
    val serialized:Array[Byte] = toBytes(a1)
    val deserialized: Bar = toObject(serialized)
    deserialized.size
    deserialized.checkMember
  }
}