GitSamples: Topic Branch Java 8
- https://philvarner.github.io/pages/modern-java.html
- https://programming.guide/java/lambda-cheat-sheet.html
- https://lemus.webs.upv.es/wordpress/wp-content/uploads/2018/02/cheat-sheets.pdf
- https://mkyong.com/tutorials/java-8-tutorials/
- https://www.tutorialspoint.com/java8/index.htm
- https://howtodoinjava.com/java-8-tutorial/
- https://winterbe.com/posts/2014/03/16/java-8-tutorial/
- https://www.baeldung.com/java-8-new-features