How to Run Spark Streaming external file within Spark Shell CLI?

Here I am going to execute Spark with Scala external file within Spark Command Line Interface.

//create streamingexa.sc file and store in ~/Desktop/vow folder

streamingexa.sc:
---------------
import org.apache.spark.streaming.{Seconds,StreamingContext}
import org.apache.spark.{SparkConf, SparkContext}
object Streaming1{
def main(args:Array[String]):Unit={
val conf = new SparkConf()
conf.set("spark.master","local[2]")
conf.set("spark.app.name","streamingApp1")

val sc = new SparkContext(conf)
val ssc = new StreamingContext(sc,Seconds(5))
val d1 = ssc.socketTextStream("localhost",3456)
val d2 = d1.map(x => x).flatMap(x => x.split(" "))
d2.print()
ssc.start()
ssc.awaitTermination()
}
}

// start spark shell CLI
$ spark-shell

//stop existing SparkContext
scala> sc.stop()

// load external file in CLI
scala> :load streamingexa.sc

// call main method without passing any arguments
Streaming1.main(null)


Open 2nd terminal window
nc -lk 3456
I love India

Result in Spark CLI:
-------------------
Time: 1549915585000 ms
-------------------------------------------
I
Love
India