I've been doing application programming for over 40 years; the task parallelism aspect of Fork/Join for 30 years; the data parallelism aspect of F/J for 4 years.

I maintain several open source projects on sourceForge.net having to do with F/J:

TymeacRSE - A Reactive Streams Push Engine http://sourceforge.net/projects/tymeacrse

TymeacSE - A Task Parallel Framework http://sourceforge.net/projects/tymeacse

TymeacDSE - A Data Parallel Framework http://sourceforge.net/projects/tymeacdse

TymeacME - A Task Parallel Framework for JavaME http://sourceforge.net/projects/tymeacme

TymeacAND - A Task Parallel Framework for Android http://sourceforge.net/projects/tymeacand

Articles:

A Reactive Stream Generator http://www.coopsoft.com/ar/ReactiveArticle.html

A Java Parallel Failure http://www.coopsoft.com/ar/Calamity3Article.html

Detecting and handling stalled threads in JavaSE http://coopsoft.com/ar/StalledArticle.html

Managing Threads in Android http://coopsoft.com/ar/AndroidArticle.html

A Java Parallel Calamity http://coopsoft.com/ar/Calamity2Article.html

A Java Fork-Join Calamity http://coopsoft.com/ar/CalamityArticle.html

Managing Threads in Android http://coopsoft.com/ar/AndroidArticle.html

A Java Fork-Join Conqueror http://coopsoft.com/ar/ConquerArticle.html

Fork-Join Development in Java SE http://coopsoft.com/ar/ForkJoinArticle.html

High Performance Priority Queues in Java SE http://coopsoft.com/ar/PriQueArticle.html

Managing Threads in Java SE http://coopsoft.com/ar/J2SEArticle.html

Multi-Threading — The Next Level http://coopsoft.com/ar/mt_article.html

A Java RMI Server Framework http://coopsoft.com/ar/rmi_article.html