Issues with Spark and Salesforce Connection - scala

Question

I am trying to load in a table from SalesForce using spark. I invoked this code
import org.apache.spark.sql.SparkSession
import org.apache.spark.sql._
object Sample {
def main(arg: Array[String]) {
val spark = SparkSession.builder().
appName("salesforce").
master("local[*]").
getOrCreate()
val tableName = "Opportunity"
val outputPath = "output/result" + tableName
val salesforceDf = spark.
read.
format("jdbc").
option("url", "jdbc:datadirect:sforce://login.salesforce.com;").
option("driver", "com.ddtek.jdbc.sforce.SForceDriver").
option("dbtable", tableName).
option("user", "").
option("password", "xxxxxxxxx").
option("securitytoken", "xxxxx")
.load()
salesforceDf.createOrReplaceTempView("Opportunity")
spark.sql("select * from Opportunity").collect.foreach(println)
//save the result
salesforceDf.write.save(outputPath)
}
}
And the docs I was referring to said to start a spark shell as:
spark-shell --jars /path_to_driver/sforce.jar
Which outputted a lot of lines in the terminal and this was the last line:
22/07/12 14:57:56 INFO util.ShutdownHookManager: Deleting directory /tmp/spark-a12b060d-5c82-4283-b2b9-53f9b3863b53
And then to submit spark
spark-submit --jars sforce.jar --class <Your class name> your jar file
However I am not sure where this jar file is and if that was substantiated? and how to submit that. Any help is appreciated, thank you.