build.sh

# I don't even know where to begin.

java-simple-server.java

import static spark.Spark.*;

public class HelloWorld {
    public static void main(String[] args) {
        // Create a route for the base endpoint
        get("/", (req, res) -> "Hello World!");
    }
}

setup.sh

mvn archetype:generate -DgroupId=com.excelmicro
  -DartifactId=HelloWorld \
  -DarchetypeArtifactId=maven-archetype-quickstart \
  -DinteractiveMode=false \
echo "<dependency>
  <groupId>com.sparkjava</groupId>
  <artifactId>spark-core</artifactId>
  <version>2.5</version>
</dependency>" >> ./HelloWorld/pom.xml