title: Is it possible to serialize non case classes in Scala?
body: <p>Is it possible to serialize object of below class using Json4s or lift or any other library?</p>
  
  <pre><code>class User(uId: Int) extends Serializable {
    var id: Int = uId
    var active: Boolean = false
    var numTweets: Int = 0
    var followers: ArrayBuffer[Int] = null
    var following: ArrayBuffer[Int] = null
    var userTimeline: Queue[String] = null
    var homeTimeline: Queue[String] = null
    var userTimelineSize: Int = 0
    var homeTimelineSize: Int = 0
    //var notifications: Queue[String] = null
    var mentions: Queue[String] = null
    var directMessages: Queue[String] = null
  }
  </code></pre>