Sample example from Effective Java book.

We build a project template.

This template is based on https://github.com/scoulomb/sample-maven-app. Where we did following modifications:

We can execute with maven exec rather than generating a jar file: See https://stackoverflow.com/questions/15869784/how-to-run-a-maven-created-jar-file-using-just-the-command-line. As stated here: https://github.com/scoulomb/sample-maven-app#some-notes

Then we should do

mvn exec:java

Here we run a plugin goal directly we should do before

mvn clean install

or

cd my-app
mvn clean install exec:java

We can aggregate several poms. It is described here: https://stackoverflow.com/questions/10665936/maven-how-to-build-multiple-independent-maven-projects-from-one-project

But mvn exec:java will not work with aggregation.

https://stackoverflow.com/questions/1469004/mvn-execjava-on-aggregate-pom

So we will use unit test

and run mvn clean install

We modified docker file to run all sub-project

So that we can run full project with

docker compose up --build

Configure project as maven in Pycharm.

Note we can clone and use IDE directly, for instance:

https://github.com/jbloch/effective-java-3e-source-code/blob/master/src/effectivejava/chapter6/item34/Operation.java

But I use this repo to add more tests,

It can also be runned when class are duplicated via maven or IDE. See example.

Followed procedure here: https://blog.travis-ci.com/docker-rate-limits. To use account which can pull more than anonymous (travis ip).

See travis file.

After docker login password save here in base64:/home/vagrant/.docker/config.json

• Copy pom to improve
• python amd c++ parallel on lambdas
• item 43 on lambda concluded but could read enum item to understand better
• also mystery how when using lambda it knows it has to override applyAsDouble
• Try parent POM
• next chapters