1. Start the Spark shell:

        $ spark-shell

2. Import the MLlib vector explicitly (not to be confused with other vector classes in collections):

        scala> import org.apache.spark.ml.linalg.{Vector, Vectors}

3. Create a dense vector:

        scala> val denseHouse = Vectors.dense(4500d,41000d,4d)

4. Create a sparse vector:

        scala> val sparseHouse =
        Vectors.sparse(3,Array(0,1,2),Array(4500d,41000d,4d))

5. Create a vector of all zeroes:

        scala> val zeroes = Vectors.zeros(3)