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T h e . C o d e R a n c h . J o u r n a l  -  S e p t e m b e r . 2 0 2 0 . E d i t i o n

A big howdy from all the CodeRanch staff, and welcome to the September edition of the CodeRanch Journal.

N e w . B a r t e n d e r s
Congratulations to our new Bartender: Jj Roberts.  Thanks for your great contributions to CodeRanch.

I n t e r e s t i n g . C o d e R a n c h . F o r u m . P o s t s
Here's some threads from this month that are worth giving a read:
  • The "Java killers"
  • A challenge problem for the night
  • JLS Postfix Increment Operator ++ Question
  • What Are "void-compatible" Blocks And "value-compatible" Blocks
  • Test Driven Development - Is it just a money maker for its creators?

  • Thanks to Michael Yuan, Cay Horstmann, Frank Mi and Tom Joe for starting these topics and everyone else that joined in for the discussions.

    T h e . N e w . 1 Z 0 - 8 1 9 . E x a m
    Oracle has merged the 1Z0-815 and 1Z0-816 exams into a single exam: the 1Z0-819. While this was introduced a bit too suddenly for those who had taken the 815, it's good for those who haven't started taking the test. One exam == half price! All existing 815/816 study materials are good to use - just skip a few topics like assertions and CallableStatement. To discuss, see....  Read more in the following threads and join in the discussions in the Programmer Certification (OCPJP) forum:
  • 1Z0-819 exam info
  • Feedback on the new OCP Java 11 Developer 1Z0-819 exam
  • Don’t Panic: Oracle announces new Java OCP 11 Exam!

  • T h e . R o u n d - u p . G a m e
    The JavaRanch Rule Round-up Game has been updated with a new a web version.

    Navigate to and test your knowledge.

    B o o k . P r o m o t i o n s
    There's a book (or software) promotion just about every week at CodeRanch. Just ask a question in the appropriate forum and you're eligible to win a copy of the book (or license).  Check the book promotions schedule

    Upcoming promotions in October:
  • Machine Learning Bookcamp (October 6th)
  •       Alexey Grigorev
          In Machine Learning Bookcamp, you’ll create and deploy
          Python-based machine learning models for a variety of increasingly
          challenging projects. By the end of the bookcamp, you’ll have
          built a portfolio of business-relevant machine learning projects
          that hiring managers will be excited to see.

  • Deep Reinforcement Learning in Action (October 13th)
  •       Alexander Zai and Brandon Brown
          Deep Reinforcement Learning in Action teaches you the fundamental
          concepts and terminology of deep reinforcement learning, along
          with the practical skills and techniques you’ll need to implement
          it into your own projects.

  • Zero to AI (October 20th)
  •       Gianluca Mauro
          In Zero to AI, you’ll explore a variety of practical AI
          applications you can use to improve customer experiences, optimize
          marketing, help you cut costs, and more.

    This month's book promotion winners:
  • OCP Oracle Certified Professional Java SE 11 Developer Complete Study Guide
  •       Winners: Charles O'Leary, Adrian Pop, Seema Richard and Frank Mi
  • Modern JavaScript for the Impatient
  •       Winners: Greg Horie, Salil Wadnerkar, Mike Simmons and Frank Mi
  • Svelte and Sapper in Action
  •       Winners: Salil Wadnerkar, Claude Moore, Frank Mi and Liutauras Vilda

    And a big Congratulations to our past Winners

    T h e . M o o s e . i s . L o o s e . o n . S o c i a l . M e d i a
    The CodeRanch announces latest news/developments frequently on our social media outlets. You can find us at:

  • Follow / Like us so you don't miss a thing.

    O u r . S t a f f
    Thanks to all staff that volunteer their time and share their knowledge to make this site the friendliest place on the web to learn.  A special thanks this month to the following members ...
  • Marshals: Campbell Ritchie · Ron McLeod · Paul Clapham · Bear Bibeault · Junilu Lacar
  • Sheriffs: Jeanne Boyarsky · Tim Cooke · Henry Wong
  • Saloon Keepers: Tim Moores · Stephan van Hulst · Tim Holloway · salvin francis · Frits Walraven
  • Bartenders: Scott Selikoff · Piet Souris · Carey Brown

  • A b o u t . T h e . E d i t o r
    Ron McLeod has been a member of CodeRanch since 2013 and a Moderator since 2015.

    J o u r n a l . A r c h i v e
    Our previously published journals are available online at:

    We've lowered the cost of advertising at CodeRanch.  Visit for details.
    Consider Paul's rocket mass heater.
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