Lagom Scala HelloWorld project

Get started with Lagom using Scala
https://www.lagomframework.com/get-started-scala.html

Create project and add it to GitHub
https://developer.lightbend.com/start/?group=lagom&project=lagom-scala-sbt

Lagom Scala project

[dave@localhost github]$ cp ~/Downloads/lagom-scala-sbt.zip .
[dave@localhost github]$ unzip -l lagom-scala-sbt.zip 
Archive:  lagom-scala-sbt.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
        0  02-16-2018 22:19   lagom-scala-sbt/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-api/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-api/src/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-api/src/main/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-api/src/main/scala/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-api/src/main/scala/com/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-api/src/main/scala/com/example/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-api/src/main/scala/com/example/hello/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-api/src/main/scala/com/example/hello/api/
     2864  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-api/src/main/scala/com/example/hello/api/DavescalalagomService.scala
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-impl/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-impl/src/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-impl/src/main/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-impl/src/main/scala/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-impl/src/main/scala/com/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-impl/src/main/scala/com/example/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-impl/src/main/scala/com/example/hellostream/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-impl/src/main/scala/com/example/hellostream/impl/
     1345  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-impl/src/main/scala/com/example/hellostream/impl/DavescalalagomStreamLoader.scala
      551  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-impl/src/main/scala/com/example/hellostream/impl/DavescalalagomStreamServiceImpl.scala
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-impl/src/main/resources/
      685  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-impl/src/main/resources/application.conf
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-api/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-api/src/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-api/src/main/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-api/src/main/scala/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-api/src/main/scala/com/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-api/src/main/scala/com/example/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-api/src/main/scala/com/example/hellostream/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-api/src/main/scala/com/example/hellostream/api/
      648  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-stream-api/src/main/scala/com/example/hellostream/api/DavescalalagomStreamService.scala
       61  02-16-2018 22:19   lagom-scala-sbt/.sbtopts
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/main/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/main/scala/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/main/scala/com/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/main/scala/com/example/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/main/scala/com/example/hello/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/main/scala/com/example/hello/impl/
     1642  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/main/scala/com/example/hello/impl/DavescalalagomServiceImpl.scala
     1648  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/main/scala/com/example/hello/impl/DavescalalagomLoader.scala
     7007  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/main/scala/com/example/hello/impl/DavescalalagomEntity.scala
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/main/resources/
      965  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/main/resources/application.conf
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/test/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/test/scala/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/test/scala/com/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/test/scala/com/example/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/test/scala/com/example/hello/
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/test/scala/com/example/hello/impl/
     1461  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/test/scala/com/example/hello/impl/DavescalalagomEntitySpec.scala
     1071  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/test/scala/com/example/hello/impl/DavescalalagomServiceSpec.scala
        0  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/test/resources/
      501  02-16-2018 22:19   lagom-scala-sbt/dave-scala-lagom-impl/src/test/resources/logback.xml
        0  02-16-2018 22:19   lagom-scala-sbt/project/
       20  02-16-2018 22:19   lagom-scala-sbt/project/build.properties
      208  02-16-2018 22:19   lagom-scala-sbt/project/plugins.sbt
      118  02-16-2018 22:19   lagom-scala-sbt/.gitignore
      595  02-16-2018 22:19   lagom-scala-sbt/LICENSE
     1514  02-16-2018 22:19   lagom-scala-sbt/build.sbt
      204  02-16-2018 22:19   lagom-scala-sbt/README.md
        0  02-16-2018 22:19   lagom-scala-sbt//
       55  01-15-2018 18:59   lagom-scala-sbt/sbt.bat
       44  01-15-2018 18:59   lagom-scala-sbt/sbt
        0  02-16-2018 22:19   lagom-scala-sbt/sbt-dist/
        0  02-16-2018 22:19   lagom-scala-sbt/sbt-dist/bin/
     6751  01-15-2018 18:59   lagom-scala-sbt/sbt-dist/bin/sbt-launch-lib.bash
     1321  01-15-2018 18:59   lagom-scala-sbt/sbt-dist/bin/sbt.bat
     5062  01-15-2018 18:59   lagom-scala-sbt/sbt-dist/bin/sbt
  1210231  01-15-2018 18:59   lagom-scala-sbt/sbt-dist/bin/sbt-launch.jar
        0  02-16-2018 22:19   lagom-scala-sbt/sbt-dist/conf/
      147  01-15-2018 18:59   lagom-scala-sbt/sbt-dist/conf/sbtconfig.txt
      939  01-15-2018 18:59   lagom-scala-sbt/sbt-dist/conf/sbtopts
---------                     -------
  1247658                     74 files

Add into GitHub
https://help.github.com/articles/adding-an-existing-project-to-github-using-the-command-line/

 Generated project
https://github.com/dveselka/lagom-scala-sbt


Build project

[dave@localhost lagom-scala-sbt]$ ./sbt runAll
Getting org.scala-sbt sbt 0.13.16 ...

Check the running service using

http://localhost:9000/api/hello/World

Get Started with Lightbend Technologies

 Microservices framework built on Akka and Play
https://www.lightbend.com/lagom-framework

Lagom - Get started 
https://www.lagomframework.com/get-started-java-maven.html


Create project - choose name and package
https://developer.lightbend.com/start/?group=lagom&project=lagom-java-maven

Download project and add it into GitHub

[dave@localhost github]$ cp ~/Downloads/lagom-java-maven.zip .
[dave@localhost github]$ unzip -l lagom-java-maven.zip 
Archive:  lagom-java-maven.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
        0  02-16-2018 21:42   lagom-java-maven/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/integration-tests/
     2536  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/integration-tests/pom.xml
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/integration-tests/src/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/integration-tests/src/test/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/integration-tests/src/test/resources/
       38  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/integration-tests/src/test/resources/application.conf
      346  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/integration-tests/src/test/resources/logback-test.xml
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/integration-tests/src/test/java/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/integration-tests/src/test/java/org/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/integration-tests/src/test/java/org/dave/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/integration-tests/src/test/java/org/dave/it/
     3043  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/integration-tests/src/test/java/org/dave/it/StreamIT.java
      130  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/.gitignore
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-api/
      734  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-api/pom.xml
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-api/src/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-api/src/main/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-api/src/main/java/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-api/src/main/java/org/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-api/src/main/java/org/dave/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-api/src/main/java/org/dave/stream/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-api/src/main/java/org/dave/stream/api/
     1446  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-api/src/main/java/org/dave/stream/api/StreamService.java
     3277  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/pom.xml
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/
     2328  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/pom.xml
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/test/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/test/resources/
      404  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/test/resources/logback-test.xml
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/test/java/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/test/java/org/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/test/java/org/dave/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/test/java/org/dave/hello/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/test/java/org/dave/hello/impl/
     1858  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/test/java/org/dave/hello/impl/HelloEntityTest.java
     1179  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/test/java/org/dave/hello/impl/HelloServiceTest.java
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/resources/
      928  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/resources/application.conf
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/java/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/java/org/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/java/org/dave/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/java/org/dave/hello/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/java/org/dave/hello/impl/
     1838  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/java/org/dave/hello/impl/HelloCommand.java
     3488  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/java/org/dave/hello/impl/HelloEntity.java
     3119  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/java/org/dave/hello/impl/HelloServiceImpl.java
      442  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/java/org/dave/hello/impl/HelloModule.java
     1820  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/java/org/dave/hello/impl/HelloEvent.java
      726  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-impl/src/main/java/org/dave/hello/impl/HelloState.java
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/
     2385  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/pom.xml
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/src/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/src/main/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/src/main/resources/
      935  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/src/main/resources/application.conf
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/src/main/java/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/src/main/java/org/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/src/main/java/org/dave/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/src/main/java/org/dave/stream/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/src/main/java/org/dave/stream/impl/
     1221  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/src/main/java/org/dave/stream/impl/StreamServiceImpl.java
      710  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/src/main/java/org/dave/stream/impl/StreamModule.java
     1196  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/src/main/java/org/dave/stream/impl/StreamSubscriber.java
     1878  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/stream-impl/src/main/java/org/dave/stream/impl/StreamRepository.java
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-api/
     1051  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-api/pom.xml
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-api/src/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-api/src/main/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-api/src/main/java/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-api/src/main/java/org/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-api/src/main/java/org/dave/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-api/src/main/java/org/dave/hello/
        0  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-api/src/main/java/org/dave/hello/api/
     1925  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-api/src/main/java/org/dave/hello/api/HelloService.java
      855  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-api/src/main/java/org/dave/hello/api/HelloEvent.java
      484  02-16-2018 21:42   lagom-java-maven/DaveLagomProject/hello-api/src/main/java/org/dave/hello/api/GreetingMessage.java
        0  02-16-2018 21:42   lagom-java-maven//
---------                     -------
    42320                     81 files

Created project on GitHub
https://github.com/dveselka/lagom-java-maven

 Build and run project

[dave@localhost DaveLagomProject]$ mvn lagom:runAll
[INFO] Scanning for projects...

[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] DaveLagomProject
[INFO] hello-api
[INFO] hello-impl
[INFO] stream-api
[INFO] stream-impl
[INFO] integration-test

Akka starting

[INFO] Compiling 6 source files to /home/dave/github/lagom-java-maven/DaveLagomProject/hello-impl/target/classes
22:57:48.601 [info] akka.event.slf4j.Slf4jLogger [] - Slf4jLogger started
22:57:49.941 [info] akka.remote.Remoting [sourceThread=ForkJoinPool-1-worker-1, akkaSource=akka.remote.Remoting, sourceActorSystem=hello-impl-application, akkaTimestamp=21:57:49.939UTC] - Starting remoting
22:57:50.865 [info] akka.remote.Remoting [sourceThread=ForkJoinPool-1-worker-1, akkaTimestamp=21:57:50.864UTC, akkaSource=akka.remote.Remoting, sourceActorSystem=hello-impl-application] - Remoting started; listening on addresses :[akka.tcp://hello-impl-application@127.0.0.1:41899]
22:57:50.883 [info] akka.remote.Remoting [sourceThread=ForkJoinPool-1-worker-1, akkaTimestamp=21:57:50.883UTC, akkaSource=akka.remote.Remoting, sourceActorSystem=hello-impl-application] - Remoting now listens on addresses: [akka.tcp://hello-impl-application@127.0.0.1:41899]
22:57:50.926 [info] akka.cluster.Cluster(akka://hello-impl-application) [sourceThread=ForkJoinPool-1-worker-1, akkaTimestamp=21:57:50.926UTC, akkaSource=akka.cluster.Cluster(akka://hello-impl-application), sourceActorSystem=hello-impl-application] - Cluster Node [akka.tcp://hello-impl-application@127.0.0.1:41899] - Starting up...
22:57:51.084 [info] akka.cluster.Cluster(akka://hello-impl-application) [sourceThread=ForkJoinPool-1-worker-1, akkaTimestamp=21:57:51.084UTC, akkaSource=akka.cluster.Cluster(akka://hello-impl-application), sourceActorSystem=hello-impl-application] - Cluster Node [akka.tcp://hello-impl-application@127.0.0.1:41899] - Registered cluster JMX MBean [akka:type=Cluster,port=41899]
22:57:51.085 [info] akka.cluster.Cluster(akka://hello-impl-application) [sourceThread=ForkJoinPool-1-worker-1, akkaTimestamp=21:57:51.084UTC, akkaSource=akka.cluster.Cluster(akka://hello-impl-application), sourceActorSystem=hello-impl-application] - Cluster Node [akka.tcp://hello-impl-application@127.0.0.1:41899] - Started up successfully

Service started

2:59:47.300 [info] akka.cluster.singleton.ClusterSingletonManager [sourceThread=stream-impl-application-akka.actor.default-dispatcher-17, akkaTimestamp=21:59:47.297UTC, akkaSource=akka.tcp://stream-impl-application@127.0.0.1:41263/user/cassandraOffsetStorePrepare-singleton, sourceActorSystem=stream-impl-application] - ClusterSingletonManager state change [Start -> Oldest]
22:59:47.301 [info] com.lightbend.lagom.internal.persistence.cluster.ClusterStartupTaskActor [sourceThread=stream-impl-application-akka.actor.default-dispatcher-13, akkaTimestamp=21:59:47.300UTC, akkaSource=akka.tcp://stream-impl-application@127.0.0.1:41263/user/cassandraOffsetStorePrepare-singleton/singleton/cassandraOffsetStorePrepare, sourceActorSystem=stream-impl-application] - Executing cluster start task cassandraOffsetStorePrepare.
22:59:47.655 [info] akka.cluster.singleton.ClusterSingletonProxy [sourceThread=stream-impl-application-akka.actor.default-dispatcher-17, akkaTimestamp=21:59:47.655UTC, akkaSource=akka.tcp://stream-impl-application@127.0.0.1:41263/user/cassandraOffsetStorePrepare-singletonProxy, sourceActorSystem=stream-impl-application] - Singleton identified at [akka://stream-impl-application/user/cassandraOffsetStorePrepare-singleton/singleton]
22:59:47.703 [info] play.api.http.EnabledFilters [] - Enabled Filters (see <https://www.playframework.com/documentation/latest/Filters>):


22:59:48.517 [info] play.api.Play [] - Application started (Dev)
[INFO] Service hello-impl listening for HTTP on 0:0:0:0:0:0:0:0:57797
[INFO] Service stream-impl listening for HTTP on 0:0:0:0:0:0:0:0:58445
[INFO] (Services started, press enter to stop and go back to the console..

Fresh  start

INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] DaveLagomProject
[INFO] hello-api
[INFO] hello-impl
[INFO] stream-api
[INFO] stream-impl
[INFO] integration-test
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building DaveLagomProject 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- lagom-maven-plugin:1.4.0:runAll (default-cli) @ DaveLagomProject ---
[INFO] Starting Kafka
[INFO] Detected Guava >= 19 in the classpath, using modern compatibility layer
[INFO] Starting Cassandra
.[INFO] Using native clock to generate timestamps.
[INFO] Did not find Netty's native epoll transport in the classpath, defaulting to NIO.
.[INFO] Using native clock to generate timestamps.
.[INFO] Using native clock to generate timestamps.

Verify service by calling

http://localhost:9000/api/hello/World

Using Ethereum Mist Wallet

Ethereum main wiki

https://github.com/ethereum/wiki/wiki

Mist release

https://github.com/ethereum/mist/releases

Step-by-Step Guide: Getting Started with Ethereum Mist Wallet

https://medium.com/@attores/step-by-step-guide-getting-started-with-ethereum-mist-wallet-772a3cc99af4


Use testnet
https://testnet.etherscan.io/

Choose RINKEBY
https://rinkeby.etherscan.io/

Start geth testnet

geth --fast --cache=512 --rpcapi personal,db,eth,net,web3 --rpc --testnet

Start mist - without local testnet

dave@localhost linux-unpacked]$ ./mist 
[2018-02-08 06:48:57.260] [INFO] main - Running in production mode: true
[2018-02-08 06:48:57.308] [INFO] EthereumNode - undefined null 'fast'
[2018-02-08 06:48:57.310] [INFO] EthereumNode - Defaults loaded: geth main fast
[2018-02-08 06:48:57.681] [INFO] main - Starting in Mist mode
[2018-02-08 06:48:59.652] [INFO] Db - Creating db: /home/dave/.config/Mist/mist.lokidb
[2018-02-08 06:48:59.812] [INFO] Db - Loading db: /home/dave/.config/Mist/mist.lokidb
[2018-02-08 06:48:59.820] [INFO] Windows - Creating commonly-used windows
[2018-02-08 06:48:59.820] [INFO] Windows - Create secondary window: loading, owner: notset
[2018-02-08 06:49:00.981] [INFO] updateChecker - Check for update...
[2018-02-08 06:49:04.822] [INFO] Windows - Create primary window: main, owner: notset
[2018-02-08 06:49:04.845] [INFO] Windows - Create primary window: splash, owner: notset
[2018-02-08 06:49:05.982] [INFO] ipcCommunicator - Backend language set to:  en
[2018-02-08 06:49:06.497] [INFO] (ui: splashscreen) - Web3 already initialized, re-using provider.
[2018-02-08 06:49:06.573] [INFO] (ui: splashscreen) - Meteor starting up...
[2018-02-08 06:49:06.652] [INFO] ClientBinaryManager - Initializing...
[2018-02-08 06:49:06.653] [INFO] ClientBinaryManager - Checking for new client binaries config from: https://raw.githubusercontent.com/ethereum/mist/master/clientBinaries.json
[2018-02-08 06:49:06.773] [WARN] ClientBinaryManager - Error loading local config - assuming this is a first run: Error: ENOENT: no such file or directory, open '/home/dave/.config/Mist/clientBinaries.json'
[2018-02-08 06:49:06.773] [INFO] ClientBinaryManager - Write new client binaries local config to disk ...
[2018-02-08 06:49:06.778] [INFO] ClientBinaryManager - No "skippedNodeVersion.json" found.
[2018-02-08 06:49:06.780] [INFO] ClientBinaryManager - Initializing...
[2018-02-08 06:49:06.780] [INFO] ClientBinaryManager - Resolving platform...
[2018-02-08 06:49:06.781] [INFO] ClientBinaryManager - Calculating possible clients...
[2018-02-08 06:49:06.783] [INFO] ClientBinaryManager - 1 possible clients.
[2018-02-08 06:49:06.784] [INFO] ClientBinaryManager - Verifying status of all 1 possible clients...
[2018-02-08 06:49:06.786] [INFO] ClientBinaryManager - Verify Geth status ...
[2018-02-08 06:49:06.888] [ERROR] ClientBinaryManager - Unable to resolve Geth executable: geth
[2018-02-08 06:49:06.891] [INFO] ClientBinaryManager - Download binary for Geth ...
[2018-02-08 06:49:06.912] [INFO] ClientBinaryManager - Downloading package from https://gethstore.blob.core.windows.net/builds/geth-linux-amd64-1.7.2-1db4ecdc.tar.gz to /home/dave/.config/Mist/binaries/Geth/archive.tar ...
[2018-02-08 06:49:08.058] [INFO] updateChecker - App is up-to-date.

Start mist - with local testnet

Connect to Ethereum geth client using web3j

Introduction video to web3j
https://www.youtube.com/watch?v=ea3miXs_P6Y

Blockchain - Using cryptocurrency with Java

http://www.javamagazine.mozaicreader.com/JanFeb2017/Default/36/0#&pageSet=36&page=0&contentItem=0

 

Reactive-Functional Fun on the Blockchain with web3j

https://community.oracle.com/docs/DOC-1011373

Ethereum Geth client

 

https://geth.ethereum.org/docs/

 

https://geth.ethereum.org/docs/install-and-build/installing-geth#most-linux-systems-and-macos


Web3j
https://web3j.io/
https://github.com/web3j/web3j 

Install Ethereum client

Get Golang and geth code

dnf install golang

git clone https://github.com/ethereum/go-ethereum.git

Compile geth client

[dave@localhost go-ethereum]$ make
build/env.sh go run build/ci.go install ./cmd/geth
>>> /usr/lib/golang/bin/go install -ldflags -X main.gitCommit=0662384d294eaa44390799747db030e8d401111d -v ./cmd/geth
github.com/ethereum/go-ethereum/common/hexutil
github.com/ethereum/go-ethereum/crypto/sha3
github.com/ethereum/go-ethereum/common/math
github.com/ethereum/go-ethereum/rlp
github.com/ethereum/go-ethereum/crypto/secp256k1
github.com/ethereum/go-ethereum/vendor/github.com/go-stack/stack
github.com/ethereum/go-ethereum/log
github.com/ethereum/go-ethereum/vendor/github.com/rcrowley/go-metrics
github.com/ethereum/go-ethereum/vendor/gopkg.in/karalabe/cookiejar.v2/collections/prque
github.com/ethereum/go-ethereum/common
github.com/ethereum/go-ethereum/vendor/github.com/aristanetworks/goarista/monotime
github.com/ethereum/go-ethereum/common/mclock
github.com/ethereum/go-ethereum/event
github.com/ethereum/go-ethereum/params
github.com/ethereum/go-ethereum/crypto/randentropy
github.com/ethereum/go-ethereum/vendor/github.com/pborman/uuid
github.com/ethereum/go-ethereum/vendor/golang.org/x/sys/unix
github.com/ethereum/go-ethereum/vendor/golang.org/x/crypto/pbkdf2
github.com/ethereum/go-ethereum/vendor/golang.org/x/crypto/scrypt
github.com/ethereum/go-ethereum/vendor/gopkg.in/fatih/set.v0
github.com/ethereum/go-ethereum/cmd/internal/browser
github.com/ethereum/go-ethereum/common/fdlimit
github.com/ethereum/go-ethereum/vendor/github.com/rcrowley/go-metrics/exp
github.com/ethereum/go-ethereum/vendor/github.com/syndtr/goleveldb/leveldb/util
github.com/ethereum/go-ethereum/metrics
github.com/ethereum/go-ethereum/vendor/github.com/syndtr/goleveldb/leveldb/cache
github.com/ethereum/go-ethereum/vendor/github.com/syndtr/goleveldb/leveldb/comparer
github.com/ethereum/go-ethereum/vendor/github.com/syndtr/goleveldb/leveldb/storage
github.com/ethereum/go-ethereum/vendor/github.com/syndtr/goleveldb/leveldb/filter
github.com/ethereum/go-ethereum/vendor/github.com/syndtr/goleveldb/leveldb/opt
github.com/ethereum/go-ethereum/vendor/github.com/golang/snappy
github.com/ethereum/go-ethereum/vendor/github.com/rjeczalik/notify
github.com/ethereum/go-ethereum/vendor/github.com/hashicorp/golang-lru/simplelru
github.com/ethereum/go-ethereum/vendor/github.com/syndtr/goleveldb/leveldb/errors
github.com/ethereum/go-ethereum/vendor/github.com/syndtr/goleveldb/leveldb/iterator
github.com/ethereum/go-ethereum/vendor/github.com/syndtr/goleveldb/leveldb/journal
github.com/ethereum/go-ethereum/vendor/github.com/hashicorp/golang-lru
github.com/ethereum/go-ethereum/vendor/github.com/syndtr/goleveldb/leveldb/memdb
github.com/ethereum/go-ethereum/vendor/github.com/syndtr/goleveldb/leveldb/table
github.com/ethereum/go-ethereum/vendor/golang.org/x/net/context
github.com/ethereum/go-ethereum/vendor/github.com/rs/xhandler
github.com/ethereum/go-ethereum/vendor/golang.org/x/net/websocket
github.com/ethereum/go-ethereum/vendor/github.com/rs/cors
github.com/ethereum/go-ethereum/vendor/github.com/edsrzf/mmap-go
github.com/ethereum/go-ethereum/vendor/github.com/syndtr/goleveldb/leveldb
github.com/ethereum/go-ethereum/common/bitutil
github.com/ethereum/go-ethereum/crypto/bn256
github.com/ethereum/go-ethereum/rpc
github.com/ethereum/go-ethereum/vendor/golang.org/x/crypto/ripemd160
github.com/ethereum/go-ethereum/vendor/github.com/elastic/gosigar
github.com/ethereum/go-ethereum/vendor/github.com/huin/goupnp/httpu
github.com/ethereum/go-ethereum/vendor/github.com/huin/goupnp/scpd
github.com/ethereum/go-ethereum/vendor/github.com/huin/goupnp/soap
github.com/ethereum/go-ethereum/vendor/github.com/huin/goupnp/ssdp
github.com/ethereum/go-ethereum/ethdb
github.com/ethereum/go-ethereum/vendor/golang.org/x/net/html/atom
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/encoding/internal/identifier
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/transform
github.com/ethereum/go-ethereum/vendor/golang.org/x/net/html
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/internal/utf8internal
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/internal/tag
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/encoding
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/runes
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/encoding/internal
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/language
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/encoding/charmap
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/encoding/japanese
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/encoding/korean
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/encoding/simplifiedchinese
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/encoding/traditionalchinese
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/encoding/unicode
github.com/ethereum/go-ethereum/vendor/github.com/jackpal/go-nat-pmp
github.com/ethereum/go-ethereum/p2p/netutil
github.com/ethereum/go-ethereum/eth/tracers/internal/tracers
github.com/ethereum/go-ethereum/vendor/gopkg.in/olebedev/go-duktape.v3
github.com/ethereum/go-ethereum/vendor/github.com/golang/protobuf/proto
github.com/ethereum/go-ethereum/vendor/golang.org/x/text/encoding/htmlindex
github.com/ethereum/go-ethereum/vendor/golang.org/x/net/html/charset
github.com/ethereum/go-ethereum/vendor/github.com/huin/goupnp
github.com/ethereum/go-ethereum/vendor/github.com/huin/goupnp/dcps/internetgateway1
github.com/ethereum/go-ethereum/vendor/github.com/huin/goupnp/dcps/internetgateway2
github.com/ethereum/go-ethereum/vendor/github.com/golang/protobuf/protoc-gen-go/descriptor
github.com/ethereum/go-ethereum/p2p/nat
github.com/ethereum/go-ethereum/accounts/usbwallet/internal/trezor
github.com/ethereum/go-ethereum/vendor/github.com/karalabe/hid
github.com/ethereum/go-ethereum/log/term
github.com/ethereum/go-ethereum/vendor/github.com/mattn/go-colorable
github.com/ethereum/go-ethereum/vendor/gopkg.in/urfave/cli.v1
github.com/ethereum/go-ethereum/internal/debug
github.com/ethereum/go-ethereum/vendor/github.com/prometheus/prometheus/util/flock
github.com/ethereum/go-ethereum/les/flowcontrol
github.com/ethereum/go-ethereum/vendor/golang.org/x/sync/syncmap
github.com/ethereum/go-ethereum/internal/jsre/deps
github.com/ethereum/go-ethereum/vendor/github.com/mattn/go-isatty
github.com/ethereum/go-ethereum/vendor/github.com/fatih/color
# github.com/ethereum/go-ethereum/vendor/gopkg.in/olebedev/go-duktape.v3
In file included from vendor/gopkg.in/olebedev/go-duktape.v3/api.go:7:0:
vendor/gopkg.in/olebedev/go-duktape.v3/api.go: In function ‘_duk_error’:
vendor/gopkg.in/olebedev/go-duktape.v3/duktape.h:510:127: warning: right-hand operand of comma expression has no effect [-Wunused-value]
  (duk_error_raw((ctx), (duk_errcode_t) (err_code), (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), __VA_ARGS__), (duk_ret_t) 0)
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~
vendor/gopkg.in/olebedev/go-duktape.v3/api.go:153:2: note: in expansion of macro ‘duk_error’
  duk_error(ctx, err_code, "%s", str);
  ^~~~~~~~~
github.com/ethereum/go-ethereum/vendor/gopkg.in/sourcemap.v1/base64vlq
github.com/ethereum/go-ethereum/vendor/gopkg.in/sourcemap.v1
github.com/ethereum/go-ethereum/vendor/github.com/robertkrimen/otto/file
github.com/ethereum/go-ethereum/vendor/github.com/robertkrimen/otto/token
github.com/ethereum/go-ethereum/vendor/github.com/robertkrimen/otto/ast
github.com/ethereum/go-ethereum/vendor/github.com/robertkrimen/otto/dbg
github.com/ethereum/go-ethereum/vendor/github.com/robertkrimen/otto/parser
github.com/ethereum/go-ethereum/vendor/github.com/robertkrimen/otto/registry
github.com/ethereum/go-ethereum/vendor/github.com/robertkrimen/otto
github.com/ethereum/go-ethereum/crypto
github.com/ethereum/go-ethereum/trie
github.com/ethereum/go-ethereum/core/types
github.com/ethereum/go-ethereum/crypto/ecies
github.com/ethereum/go-ethereum/p2p/discover
github.com/ethereum/go-ethereum
github.com/ethereum/go-ethereum/accounts
github.com/ethereum/go-ethereum/accounts/keystore
github.com/ethereum/go-ethereum/core/state
github.com/ethereum/go-ethereum/core/vm
github.com/ethereum/go-ethereum/p2p/discv5
github.com/ethereum/go-ethereum/consensus
github.com/ethereum/go-ethereum/consensus/misc
github.com/ethereum/go-ethereum/consensus/clique
github.com/ethereum/go-ethereum/consensus/ethash
github.com/ethereum/go-ethereum/core
github.com/ethereum/go-ethereum/p2p
github.com/ethereum/go-ethereum/core/bloombits
github.com/ethereum/go-ethereum/eth/fetcher
github.com/ethereum/go-ethereum/accounts/usbwallet
github.com/ethereum/go-ethereum/dashboard
github.com/ethereum/go-ethereum/node
github.com/ethereum/go-ethereum/whisper/whisperv5
github.com/ethereum/go-ethereum/eth/downloader
github.com/ethereum/go-ethereum/eth/filters
github.com/ethereum/go-ethereum/light
github.com/ethereum/go-ethereum/internal/jsre
github.com/ethereum/go-ethereum/internal/ethapi
github.com/ethereum/go-ethereum/miner
github.com/ethereum/go-ethereum/internal/web3ext
github.com/ethereum/go-ethereum/vendor/github.com/peterh/liner
github.com/ethereum/go-ethereum/eth/gasprice
github.com/ethereum/go-ethereum/ethclient
github.com/ethereum/go-ethereum/vendor/github.com/maruel/panicparse/stack
github.com/ethereum/go-ethereum/console
github.com/ethereum/go-ethereum/vendor/github.com/mattn/go-runewidth
github.com/ethereum/go-ethereum/vendor/github.com/mitchellh/go-wordwrap
github.com/ethereum/go-ethereum/vendor/github.com/nsf/termbox-go
github.com/ethereum/go-ethereum/vendor/github.com/naoina/go-stringutil
github.com/ethereum/go-ethereum/vendor/github.com/naoina/toml/ast
github.com/ethereum/go-ethereum/vendor/github.com/gizak/termui
github.com/ethereum/go-ethereum/vendor/github.com/naoina/toml
github.com/ethereum/go-ethereum/eth/tracers
github.com/ethereum/go-ethereum/eth
github.com/ethereum/go-ethereum/les
github.com/ethereum/go-ethereum/ethstats
github.com/ethereum/go-ethereum/cmd/utils
github.com/ethereum/go-ethereum/cmd/geth
Done building.
Run "/home/dave/github/go-ethereum/build/bin/geth" to launch geth.

Start geth client

[dave@localhost go-ethereum]$ /home/dave/github/go-ethereum/build/bin/geth --fast --cache=512 --rpcapi personal,db,eth,net,web3 --rpc --testnet
INFO [02-04|06:34:54] Starting peer-to-peer node               instance=Geth/v1.8.0-unstable-0662384d/linux-amd64/go1.8.5
INFO [02-04|06:34:54] Allocated cache and file handles         database=/home/dave/.ethereum/testnet/geth/chaindata cache=512 handles=512
INFO [02-04|06:34:55] Writing custom genesis block 
INFO [02-04|06:34:55] Initialised chain configuration          config="{ChainID: 3 Homestead: 0 DAO: <nil> DAOSupport: true EIP150: 0 EIP155: 10 EIP158: 10 Byzantium: 1700000 Engine: ethash}"
INFO [02-04|06:34:55] Disk storage enabled for ethash caches   dir=/home/dave/.ethereum/testnet/geth/ethash count=3
INFO [02-04|06:34:55] Disk storage enabled for ethash DAGs     dir=/home/dave/.ethash                       count=2
INFO [02-04|06:34:55] Initialising Ethereum protocol           versions="[63 62]" network=3
INFO [02-04|06:34:55] Loaded most recent local header          number=0 hash=419410…ca4a2d td=1048576
INFO [02-04|06:34:55] Loaded most recent local full block      number=0 hash=419410…ca4a2d td=1048576
INFO [02-04|06:34:55] Loaded most recent local fast block      number=0 hash=419410…ca4a2d td=1048576
INFO [02-04|06:34:55] Regenerated local transaction journal    transactions=0 accounts=0
INFO [02-04|06:34:55] Starting P2P networking 
INFO [02-04|06:34:57] UDP listener up                          self=enode://9bbc55ed1cca170be4cba9c3ea9e22322680d2f9cdd7e363591d2a6738e55707cb58fa64764c9b1ead28174dbec81ec5721cb2452e625de6292fe36881d672a2@89.233.189.164:30303
INFO [02-04|06:34:57] RLPx listener up                         self=enode://9bbc55ed1cca170be4cba9c3ea9e22322680d2f9cdd7e363591d2a6738e55707cb58fa64764c9b1ead28174dbec81ec5721cb2452e625de6292fe36881d672a2@89.233.189.164:30303
INFO [02-04|06:34:57] IPC endpoint opened: /home/dave/.ethereum/testnet/geth.ipc 
INFO [02-04|06:34:57] HTTP endpoint opened: http://127.0.0.1:8545 

Geth client running

INFO [02-04|07:06:39] Imported new state entries               count=273 elapsed=8.868µs processed=273 pending=4369 retry=0 duplicate=0 unexpected=0
INFO [02-04|07:06:39] Imported new block headers               count=0   elapsed=8.269ms number=83814 hash=94033d…457655 ignored=192
INFO [02-04|07:06:39] Imported new block receipts              count=4   elapsed=659.004µs bytes=3957 number=83626 hash=ba23b3…b7e218 ignored=0
INFO [02-04|07:06:40] Imported new block receipts              count=33  elapsed=4.361ms   bytes=33409 number=83659 hash=5eb979…3e5a58 ignored=0
INFO [02-04|07:06:40] Imported new block headers               count=0   elapsed=7.208ms   number=84006 hash=aee4cb…1bb757 ignored=192
INFO [02-04|07:06:40] Imported new block receipts              count=155 elapsed=35.627ms  bytes=89944 number=83814 hash=94033d…457655 ignored=0
INFO [02-04|07:06:40] Imported new block receipts              count=192 elapsed=9.058ms   bytes=130405 number=84006 hash=aee4cb…1bb757 ignored=0

Connect to client using https://web3j.io/

Web3j code samples
https://github.com/web3j/examples/blob/master/rx/src/main/java/org/web3j/examples/rx/Main.java

Maven sample project
https://github.com/JacqMT/web3j-maven-example/blob/master/pom.xml

Clone sample project

git clone https://github.com/JacqMT/web3j-maven-example

Compile test project using

[dave@localhost web3j-maven-example]$ mvn install
[INFO] Scanning for projects...
[WARNING] 
[[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building web3j-maven-example 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ web3j-maven-example ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /home/dave/github/web3j-maven-example/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ web3j-maven-example ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 4 source files to /home/dave/github/web3j-maven-example/target/classes
[INFO] 
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ web3j-maven-example ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /home/dave/github/web3j-maven-example/src/test/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ web3j-maven-example ---
[INFO] No sources to compile
[INFO] 
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ web3j-maven-example ---
[INFO] No tests to run.
[INFO] 
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ web3j-maven-example ---
[INFO] Building jar: /home/dave/github/web3j-maven-example/target/web3j-maven-example-1.0-SNAPSHOT.jar
[INFO] 
[INFO] --- maven-install-plugin:2.4:install (default-install) @ web3j-maven-example ---
[INFO] Installing /home/dave/github/web3j-maven-example/target/web3j-maven-example-1.0-SNAPSHOT.jar to /home/dave/.m2/repository/org/train/web3j-maven-example/1.0-SNAPSHOT/web3j-maven-example-1.0-SNAPSHOT.jar
[INFO] Installing /home/dave/github/web3j-maven-example/pom.xml to /home/dave/.m2/repository/org/train/web3j-maven-example/1.0-SNAPSHOT/web3j-maven-example-1.0-SNAPSHOT.pom

[dave@localhost web3j-maven-example]$ ls -R
.:
contracts  LICENSE  pom.xml  README.md  src  tutorial-images

./contracts:
build  solidity

./contracts/build:
greeter.abi  greeter.bin  mortal.abi  mortal.bin

./contracts/solidity:
Greeter.sol

./src:
main

./src/main:
java

./src/main/java:
org

./src/main/java/org:
train  web3j

./src/main/java/org/train:
FundsService.java  Greeting.java  VersionFinder.java

./src/main/java/org/web3j:
example

./src/main/java/org/web3j/example:
generated

./src/main/java/org/web3j/example/generated:
Greeter.java

./tutorial-images:
'Generate a Wallet.png'           'Rinkeby EtherScan.png'             'Setting Contract Value Output.png'
'Greetings Output.png'            'Rinkeby Faucet.png'                'Starting Local Ethereum Node.png'
'Local Node Sync Status.png'      'Sending Funds Local Node Log.png'  'VersionFinder Output.png'
'Rinkeby EtherScan Overview.png'  'Sending Funds Output.png'

Display version of Ethereum geth  client

[dave@localhost web3j-maven-example]$ mvn exec:java -Dexec.mainClass="org.train.VersionFinder"

Client version: Geth/v1.8.0-unstable-0662384d/linux-amd64/go1.8.5
Network version: 3

Download web3j CLI tools
https://github.com/web3j/web3j/releases/tag/v3.2.0

 Create  wallet

[dave@localhost bin]$ ./web3j wallet create

              _      _____ _     _        
             | |    |____ (_)   (_)       
__      _____| |__      / /_     _   ___  
\ \ /\ / / _ \ '_ \     \ \ |   | | / _ \ 
 \ V  V /  __/ |_) |.___/ / | _ | || (_) |
  \_/\_/ \___|_.__/ \____/| |(_)|_| \___/ 
                         _/ |             
                        |__/              

Please enter a wallet file password: 
Please re-enter the password: 
Please enter a destination directory location [/home/dave/.ethereum/testnet/keystore]: 
Wallet file UTC--2018-02-04T06-34-14.95000000Z--1234567890123456789012345678.json successfully created in: /home/dave/.ethereum/testnet/keystore

Check transactions on testnet
https://rinkeby.etherscan.io/address/

Getting ether from https://www.rinkeby.io/ "Crypto Faucet"
https://gist.github.com/cryptogoth/10a98e8078cfd69f7ca892ddbdcf26bc

Post wallet id on Google+ and then go to
https://www.rinkeby.io/#faucet

Check if Ether  transaction is properly finished on  https://rinkeby.etherscan.io/address/

Transaction Information
TxHash:
0xTX_HASH
TxReceipt Status: Success
Block Height: 1710713 (102 block confirmations)
TimeStamp: 25 mins ago (Feb-04-2018 07:48:00 AM +UTC)
From:  0xTO_WALLET_ADDRESS
To:0xFROM_WALLET_ADDRESS
Value: 3 Ether ($0.00)
Gas Limit: 21000
Gas Used By Txn: 21000
Gas Price: 0.000000004 Ether (4 Gwei)
Actual Tx Cost/Fee: 0.000084 Ether ($0.000000)
Cumulative Gas Used: 21000
Nonce: 5246

Block information

Block Information
  Height:     
   1710713  
  TimeStamp:     1 hr 4 mins ago (Feb-04-2018 07:48:00 AM +UTC)
  Transactions:     2 transactions and 0 contract internal transactions in this block
  Hash:     0xTX_HASH
  Parent Hash:     0xPARENT_TX_HASH
  Sha3Uncles:     0x1dcc4de8dec75d7aa45645645651b948a7413f0a142fd40d49347
  Mined By:     0xfc18cbc391de84dbd87466689f5dd91 in 15 secs
  Difficulty:     2
  Total Difficulty:     3,188,999
  Size:     864 bytes
  Gas Used:     5,033,664 (71.90%)
  Gas Limit:     7,001,200
  Nonce:     0x0000000000000000
  Block Reward:     0 Ether
  Uncles Reward:     

Fully synchronize geth client

dave@localhost go-ethereum]$ /home/dave/github/go-ethereum/build/bin/geth --fast --cache=512 --rpcapi personal,db,eth,net,web3 --rpc --testnet
INFO [02-04|09:33:58] Starting peer-to-peer node               instance=Geth/v1.8.0-unstable-0662384d/linux-amd64/go1.8.5
INFO [02-04|09:33:58] Allocated cache and file handles         database=/home/dave/.ethereum/testnet/geth/chaindata cache=512 handles=512
INFO [02-04|09:34:00] Initialised chain configuration          config="{ChainID: 3 Homestead: 0 DAO: <nil> DAOSupport: true EIP150: 0 EIP155: 10 EIP158: 10 Byzantium: 1700000 Engine: ethash}"
INFO [02-04|09:34:00] Disk storage enabled for ethash caches   dir=/home/dave/.ethereum/testnet/geth/ethash count=3
INFO [02-04|09:34:00] Disk storage enabled for ethash DAGs     dir=/home/dave/.ethash                       count=2
INFO [02-04|09:34:01] Initialising Ethereum protocol           versions="[63 62]" network=3
INFO [02-04|09:34:01] Loaded most recent local header          number=926234 hash=a2bb1a…990d6c td=642817207095421
INFO [02-04|09:34:01] Loaded most recent local full block      number=0      hash=419410…ca4a2d td=1048576
INFO [02-04|09:34:01] Loaded most recent local fast block      number=913040 hash=9c0570…0f970a td=627371749055334
INFO [02-04|09:34:01] Loaded local transaction journal         transactions=0 dropped=0
INFO [02-04|09:34:01] Upgrading chain index                    type=bloombits percentage=70
INFO [02-04|09:34:01] Regenerated local transaction journal    transactions=0 accounts=0
INFO [02-04|09:34:01] Starting P2P networking 
INFO [02-04|09:34:05] UDP listener up                          self=enode://9bbc55ed1cca170be4cba9c3ea76765cca170226dd7e363591d2a6738e55707cb58fa64764c9b1ead28174dbec81ec5721cb2452e625de6292fe36881d672a2@89.233.189.164:30303
INFO [02-04|09:34:05] RLPx listener up                         self=enode://9bbc55ed1cca170be4cba9c322680d2f956565635956565738e55707cb58fa64764c9b1ead28174dbec81ec5721cb2452e625de6292fe36881d672a2@89.233.189.164:30303
INFO [02-04|09:34:05] IPC endpoint opened: /home/dave/.ethereum/testnet/geth.ipc 
INFO [02-04|09:34:05] HTTP endpoint opened: http://127.0.0.1:8545 

[dave@localhost go-ethereum]$ du -h  /home/dave/.ethereum/
2.8M    /home/dave/.ethereum/geth/chaindata
20K    /home/dave/.ethereum/geth/nodes
2.9M    /home/dave/.ethereum/geth
60M    /home/dave/.ethereum/testnet/geth/ethash
2.0G    /home/dave/.ethereum/testnet/geth/chaindata
6.2M    /home/dave/.ethereum/testnet/geth/nodes
2.0G    /home/dave/.ethereum/testnet/geth
8.0K    /home/dave/.ethereum/testnet/keystore
2.0G    /home/dave/.ethereum/testnet
4.0K    /home/dave/.ethereum/keystore
2.0G    /home/dave/.ethereum/

Without properly finished transaction you will get following error

java.util.concurrent.ExecutionException: java.lang.RuntimeException: Error processing transaction request: insufficient funds for gas * price + value

Run the test code

mvn exec:java -Dexec.mainClass="org.train.FundsService"

 
Transfer funds using web3j test code

package org.train;

import java.io.IOException;
import java.math.BigDecimal;
import java.util.concurrent.ExecutionException;

import org.web3j.crypto.CipherException;
import org.web3j.crypto.Credentials;
import org.web3j.crypto.WalletUtils;
import org.web3j.protocol.Web3j;
import org.web3j.protocol.core.methods.response.TransactionReceipt;
import org.web3j.protocol.exceptions.TransactionTimeoutException;
import org.web3j.protocol.http.HttpService;
import org.web3j.tx.Transfer;
import org.web3j.utils.Convert;

public class FundsService {
    public static void main(String[] args) throws IOException, CipherException, InterruptedException,
                                                    ExecutionException, TransactionTimeoutException {
        Web3j web3 = Web3j.build(new HttpService());
        String walletId = "<WALLET_ADDRESS>";
        String walletSource = "/home/dave/.ethereum/testnet/keystore/UTC--2018-02-04T06-34-14.95000000Z--" + walletId + "" +
                ".json";
        Credentials credentials = WalletUtils.loadCredentials("<WALLET_PASSWORD>", walletSource);
        String myWalletAddr = "0x" + walletId;
        TransactionReceipt transactionReceipt = Transfer.sendFundsAsync(web3, credentials, myWalletAddr,
                BigDecimal.valueOf(0.2), Convert.Unit.ETHER).get();
        System.out.println("Funds transfer completed...");
        System.out.println("Hash: " + transactionReceipt.getBlockHash());
        System.out.println("Block number: " + transactionReceipt.getBlockNumber());
    }
}