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Frits Walraven

Creator of Enthuware JWS+ V6
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since Apr 07, 2010
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Amersfoort, The Netherlands
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Recent posts by Frits Walraven

Congratulations Ranchers      
3 weeks ago

 I have added some additional details as well to show how I got a query.


Can you please put those details in a new post?
3 months ago
A small note if you choose a table per concrete entity class: support of this feature is not guaranteed (spec JPA 2.1) and it has some serious drawbacks

2.12 Inheritance Mapping Strategies
Support for the table per concrete class inheritance mapping strategy is optional in this
release. Applications that use this mapping strategy will not be portable

The developer certification that was discussed in this forum was: OCMJD (1Z0-856).

I will move your post to the OCJP forum.
T h e . C o d e R a n c h . J o u r n a l - F e b r u a r y . 2 0 2 1 . E d i t i o n

Howdy from all the CodeRanch staff, and welcome to the February edition of the CodeRanch Journal.


W h a t ' s . N e w?



* Where did the Recent Topics go to ?!?. One of the most like entries to our forums is missing?

Recent Topics, as our Trailboss explains: "has been deprecated for years and it is using old code that needs to be removed. The PIE stuff is $1 per month. So if you want to keep using that feature for a while longer, you can shell out five bucks every five months.  Easy.  Or, use the new replacement that functions almost exactly the same."  

PIE = Programmer's Inner-circle Elite . Having pies means that you have access to some of the premium features of this site: view and post in the hidden pie forum, turn off ads, highlight one thread with a pie (does not cost pie) to name a few and have access to the Recent Topics feature. To buy some slices of PIE click buy pie link

Is there an alternative? Yes, you can make use of our dashboard functionality.... TL;DR? Have a go at: Edit Profile > Site Personalization > Default view on the home page -> "Most recent topics table" or "Most recent in last month by category" or "Most Recent Only" or .....

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


* HELP! Problem with Listener

* How String constructor work exactly when pass Array?

* Happy valentines day

* Why are my method calls being executed in reverse order?

* $25 Java 1Z0-819 exam in honor of Java's 25th anniversary thru April 25th


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.
We've got some promotions coming up. Check the book promo schedule.

Our recent book promotions and their winners can be found below:

* Winners: OCP Oracle Certified Professional Java SE 11 Developer Practice Tests

B o o k . R e v i e w s


We have a dedicated forum for book reviews.

Please check out the latest reviews (also available on our book review grid: Book-Review-Grid)

T h e . M o o s e . o n . S o c i a l


The CodeRanch announces latest news/developments frequently on our social media outlets. You can find us at:

  • Twitter - https://twitter.com/coderanch
  • Facebook - https://www.facebook.com/coderanch

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


    A b o u t . T h e . E d i t o r



    Frits Walraven has been a member of CodeRanch since 2010, a Bartender since 2013.

    S u g g e s t i o n s / F e e d b a c k


    If you have any feedback on this month's journal then feel free to create a topic in our Ranch-Office

    J o u r n a l . A r c h i v e


    Our previously published journals are available online at Java-Ranch-Journal
    6 months ago
    Congratulations Nathan Milota,

    Your question has made it to our Journal  

    Have a Cow!
    6 months ago
    Congratulations Randy Tong,

    Your question has made it to our Journal  

    Have a Cow!
    6 months ago
    Congratulations groote sharma,

    Your question has made it to our Journal    

    Have a Cow!
    6 months ago
    Congratulations Pat Watson,

    Your question has made it to our Journal    

    Have a Cow!
    6 months ago
    T h e . C o d e R a n c h . J o u r n a l - F e b r u a r y . 2 0 2 1 . E d i t i o n

    Howdy from all the CodeRanch staff, and welcome to the February edition of the CodeRanch Journal.


    W h a t ' s . N e w?



    * Where did the Recent Topics go to ?!?. One of the most like entries to our forums is missing?

    Recent Topics, as our Trailboss explains: "has been deprecated for years and it is using old code that needs to be removed. The PIE stuff is $1 per month. So if you want to keep using that feature for a while longer, you can shell out five bucks every five months.  Easy.  Or, use the new replacement that functions almost exactly the same."  

    PIE = Programmer's Inner-circle Elite . Having pies means that you have access to some of the premium features of this site: view and post in the hidden pie forum, turn off ads, highlight one thread with a pie (does not cost pie) to name a few and have access to the Recent Topics feature. To buy some slices of PIE click buy pie link

    Is there an alternative? Yes, you can make use of our dashboard functionality.... TL;DR? Have a go at: Edit Profile > Site Personalization > Default view on the home page -> "Most recent topics table" or "Most recent in last month by category" or "Most Recent Only" or .....

    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


    * HELP! Problem with Listener

    * How String constructor work exactly when pass Array?

    * Happy valentines day

    * Why are my method calls being executed in reverse order?

    * $25 Java 1Z0-819 exam in honor of Java's 25th anniversary thru April 25th


    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.
    We've got some promotions coming up. Check the book promo schedule.

    Our recent book promotions and their winners can be found below:

    * Winners: OCP Oracle Certified Professional Java SE 11 Developer Practice Tests

    B o o k . R e v i e w s


    We have a dedicated forum for book reviews.

    Please check out the latest reviews (also available on our book review grid: Book-Review-Grid)

    T h e . M o o s e . o n . S o c i a l


    The CodeRanch announces latest news/developments frequently on our social media outlets. You can find us at:

  • Twitter - https://twitter.com/coderanch
  • Facebook - https://www.facebook.com/coderanch

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


    A b o u t . T h e . E d i t o r



    Frits Walraven has been a member of CodeRanch since 2010, a Bartender since 2013.

    S u g g e s t i o n s / F e e d b a c k


    If you have any feedback on this month's journal then feel free to create a topic in our Ranch-Office

    J o u r n a l . A r c h i v e


    Our previously published journals are available online at Java-Ranch-Journal
    6 months ago
    Can you tell us what happens if you only call session.save(person1);?
    T h e  C o d e R a n c h  J o u r n a l - J A N U A R Y   2 0 2 1   E d i t i o n

    Gather around folks !! It's going to be a wild year ahead. Let's all huddle together and behold this lovely January 2021 edition of the CodeRanch Journal. According to the romans, January is named after the god Janus. His statue is depicted as two faces looking at either direction. This has quite a symbolic meaning as it tells us to look behind as well as forward. Janus ruled over both, the beginning as well as the end of a conflict, this gives him control over both war and peace. He represents the all beginnings and can see the past and the future. Let's take a deep breath and contemplate on 2020 (gasp !! cough! cough !!) and move on to 2021. You cannot alter the past, but you do control the future. Maybe, this is why java’s java.lang.FutureTask is a cancellable operation.



    F r o m   S p o n s o r ' s    C o r n e r!

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    Don't miss the chance to get an annual subscription with a 50% off. Use a special promo code ‘CODERANCH’! *

    Grab your discount on [CodeGym.cc] ( https://coderanch.com/codegym ) and start your Java developer way!

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    W h a t ' s   N e w?

    * The Ranch now has a new shiny Bar !! A menu bar ;) The new icons adore the brow of our lovely ranch. It's responsive and changes as it wishes as per your screen size and stays up even when scrolling.
    * We have a new little search bar that now prompts to search our whole site, advanced search, google search your question in our ranch. It also allows to search in a specific forum.


    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

    January has a bountiful harvest of interesting posts. Here are some we would recommend you to read:

    Can Unicorns be cast as Dragons?
    One might expect to find expect to find a story here about magnificent beasts are transformed into scaly monsters. But’s there’s something even better. It’s a nice explanation about how the compiler keeps a track about the types during compilation and then ignored during runtime.
    Post link: https://coderanch.com/t/738180/java/List-Unicorn-type-add-Dragon

    If we build a string, what equality does it bring?
    A quest to check the equality between two strings. One was born as a pure string and one was built by a builder. Will they be equal in the eyes of java? This post tells it all.
    Post link: https://coderanch.com/t/738455/certification/equals-evaluates-contents-object-memory

    Static method woes
    An informative post about static methods. The post mentions about how a user thought a static method would return an object once it was called. It’s interesting about a few misunderstandings for static that many programmers have.
    Post link: https://coderanch.com/t/738606/java/Static-Methods

    If two or more pair, can work be done there?
    Let’s dive into the Agile world now. This is an interesting discussion about pair programming. Mainly, the poster is asking about what is the benefit of two resources working together on the same task. It is a must read for agile methodology folks and gives a good perspective about pair programming.
    Post link: https://coderanch.com/t/738395/careers/pair-programming-developers-work-task

    A date with a local was not quite the same
    Once again, an equality based discussion. The poster is asking if two or more LocalDate objects are created, why they aren’t the same when using the “==” symbol.
    Post link: https://coderanch.com/t/738680/certification/immutable-LocalDate-objects-evaluated-false

    I dont know what to say... I did something yesterday
    Once again, a discussion into the Agile process. This post discusses a lot of items and questions about the daily status updates. The discussion is quite long, so grab a coffee before you start reading it.
    Post link: https://coderanch.com/t/738650/careers/update-status-Daily-Standup-Meetings

    Protecting Geese and birds
    A good post about the protected keyword. A good question about a code that does not compile even though it is accessing a protected method.
    Post link: https://coderanch.com/t/738655/java/Protected-accessor-wierd

    The 40-60 problem
    I won’t give much info about this post except that the poster thought he discovered a bug in BigDecimal. Is that an actual bug? Should we stop using BigDecimal? Stay tuned…
    Post link: https://coderanch.com/t/738604/java/Horrendous-bug-java-lang-BigDecimal

    Do we need to reckon the past ?
    A lovely post about job discussion. The poster has asked if decades of experience are worth anything. Interesting topic, lovely discussion. What do you think? Post your opinions here.
    Post link: https://coderanch.com/t/737983/careers/decades-worth-experience-worth-days

    A puzzle of alphabets
    An interesting discussion about anagrams. The poster wants to write a program to detect an anagram in code. Is it as simple as it sounds?
    Post link: https://coderanch.com/t/738477/java/Anagram
    All the OPs for these posts will be rewarded with a well-deserved cow.



    S o m e b o d y   y o u   m i g h t   n o t   h a v e   n o t i c e d

    Eric Matyas has been consistently sharing great assets for free use. It's quite useful for game developers. Have a look at these posts:
    https://coderanch.com/t/280/650256/java/Sharing-Music-Sound-Effects-Tracks
    https://coderanch.com/t/120/674725/java/Building-Free-Library-Images


    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

    Promotions in January:
    * High Performance Python for Data Analytics by Tiago Rodrigues Antao
    ** Winners: Guru Bhat, Gary W. Lucas, Jose Samonte, Don Horrell
    * Mastering Corda: Blockchain for Java Developers by Jamiel Sheikh
    ** Winners: Rahim Nathwani, Stephan van Hulst, George Gdgeorgiadis, Vivek Ravi
    * The Career Toolkit by Mark Herschberg
    ** Winners: Tim Holloway, German Gonzalez-Morris , Les Morgan , Burk Hufnagel
    * Azure Data Engineering by Vlad Riscutia
    ** Winners: paul nisset, Lanny Gilbert, Jose Samonte, Fidel Edwards

    Upcoming promotions in February:
    * OCP Oracle Certified Professional Java SE 11 Developer Practice Tests

    We are very grateful to the publishers and authors for supplying the books and answering our questions.


    B o o k  R e v i e w s

    * We have a dedicated forum for book reviews.

    Please check out the latest reviews (also available on our Book Review Grid)


    T h e  M o o s e  o n  S o c i a l

    You will find a few recent CodeRanch announcements and quotes at:

    Twitter - https://twitter.com/coderanch
    Facebook - https://www.facebook.com/coderanch

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


    A b o u t  T h e  E d i t o r
    Salvin Francis has been a member of CodeRanch since 2009 and a Moderator since 2015.


    S u g g e s t i o n s / F e e d b a c k
    If you have any feedback on this month's journal then feel free to create a topic in our Ranch Office forum.


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

    7 months ago
    Great!

    Have a Cow for sharing your git repository