Serialization

gistfile1.scala

import java.io._

object TestStuff {

  class Person(val name: String) extends Serializable {
    var age: Int = 0
    object personProperties extends Serializable {
      val location: String = "MA"
      var job: String = ""
    }
    override def toString: String = s"Person(name:$name age:$age location:${personProperties.location} job:${personProperties.job})"
  }

  def serializePerson(p: Person): Unit = {
    val fout = new FileOutputStream("tmp.ser"); val out = new ObjectOutputStream(fout)
    out.writeObject(p)
    out.close(); fout.close()
  }

  def deserializePerson(): Person = {
    val fin = new FileInputStream("tmp.ser"); val in = new ObjectInputStream(fin)
    val p: Person = in.readObject().asInstanceOf[Person]
    in.close(); fin.close()
    p
  }

  def main(args: Array[String]): Unit = {
    val p = new Person("foo")
    p.personProperties.job = "zookeeper"
    println(s"serializing: $p") // serializing: Person(name:foo age:0 location:MA job:zookeeper)
    serializePerson(p)
    val newP = deserializePerson()
    println(s"deserialized: $newP") // deserialized: Person(name:foo age:0 location:MA job:)
  }

}