A Hello World running in Spark Java
See: http://pconrad-webapps.github.io/topics/spark_java_getting_started/
To compile and build executable uberjar:
mvn package
To run from executable uberjar:
java -jar target/HelloSparkJava-1.0-SNAPSHOT.jar
That starts a server running on port 4567
Go to: http://localhost:4567/hello to see result.
Substitute hostname for localhost if you can't run a web browser directly on the machine where you are running.