Code Sketch

class BaseData {
    val baseList = List(1,2,3)
}

class Data extends BaseData {
    val someInt = 9
    val someDouble = 2.3
    val array = Array(1,2,3,4)
    val arrayList = new java.util.ArrayList[String]()
    arrayList.add("a"); arrayList.add("b"); arrayList.add("c")
}

val data = new Data()
inspect(data)