1. Let's go to our code directory from Chapter 5, Application Testing, and execute ./gradlew clean build
2. With the Uber JAR built, let's launch the application by executing java -jar build/libs/ch6-0.0.1-SNAPSHOT.jar
3. This will result in our application running in the JAR file with the following console output:

      .   ____          _            __ _ _
     / / ___'_ __ _ _(_)_ __  __ _    
    ( ( )___ | '_ | '_| | '_ / _` |    
     /  ___)| |_)| | | | | || (_| |  ) ) ) )
      '  |____| .__|_| |_|_| |___, | / / / /
     =========|_|==============|___/=/_/_/_/
     :: Spring Boot ::  (v2.0.0.BUILD-SNAPSHOT)
    ...
    (The rest is omitted for conciseness)
    ...
    2017-12-17 INFO: Registering beans for JMX exposure on startup
    2017-12-17 INFO: Tomcat started on port(s): 8080 (http) 8443  
    (https)
    2017-12-17 INFO: Welcome to the Book Catalog System!
    2017-12-17 INFO: BookRepository has 1 entries
    2017-12-17 INFO: ReviewerRepository has 0 entries
    2017-12-17 INFO: PublisherRepository has 1 entries
    2017-12-17 INFO: AuthorRepository has 1 entries
    2017-12-17 INFO: Started BookPubApplication in 12.156 seconds (JVM 
    running for 12.877)
    2017-12-17 INFO: Number of books: 1