How to run a Spark Java program

Question

I have written a Java program for Spark. But how to run and compile it from Unix command line. Do I have to include any jar while compiling for running

Answer 1

Aditionally to the selected answer, if you want to connect to an external standalone Spark instance:

SparkConf conf =
new SparkConf()
     .setAppName("Simple Application")
     .setMaster("spark://10.3.50.139:7077");

JavaSparkContext sc = new JavaSparkContext(conf);

Here you can find more "master" configuration depending on where Spark is running: http://spark.apache.org/docs/latest/submitting-applications.html#master-urls