Java Deep

Javax0 is a technical blog about Java and some other programming stuff. You can find here articles which were originally posted on the Wordpress.com site.

Articles before December 2022 were originally posted on the WordPress site and copied here. Articles 2022 December and later were published here originally.

Javax0 is also republished regularly on DZone, Web Code Geek and Java Code Geeks.

PeterVerhas

Posts

Jul 10, 2025
Why I Abandoned my 30-year Open Source Project
Jan 8, 2025
Talk to AGI
Dec 24, 2024
RUST for Java Developers
Oct 9, 2024
Mixing Documentation to Code and REST APIs
Sep 8, 2024
Programming Language with no Syntax?
Jul 26, 2024
Better Writing with AI
Jul 22, 2024
LLM and RAG technology
Jul 22, 2024
Технология LLM и RAG
Jul 22, 2024
Az LLM és a RAG technológia
Jul 22, 2024
Tecnología LLM y RAG
Jul 22, 2024
LLM- und RAG-Technologie
Feb 29, 2024
Threaded streams
Nov 12, 2023
Cloud Solutions are Expensive, or are they?
Aug 28, 2023
Programming with AI
Aug 27, 2023
Virtual and Augmented Reality is Here
Aug 25, 2023
Unit test future versions
Aug 7, 2023
Do not stop threads
Jul 5, 2023
Managing IntelliJ Live templates
Jun 19, 2023
Adding Diagrams to Markdown Documents
Jun 5, 2023
Adding Mermaid Diagrams to Markdown Documents
May 26, 2023
About the Questions on Linked In Java Developers Community
May 24, 2023
Rearrange and array in place
May 23, 2023
Converting Numbers to Roman Numerals
Feb 13, 2023
About Rust
Jan 31, 2023
Open Source Blog
Jan 23, 2023
Ten Useless Things You Did Not Know About Java
Jan 5, 2023
Hidden Classes in Java 15
Dec 7, 2022
Blog Posting
May 24, 2022
Docs as Code is not enough
Dec 8, 2021
Lambda and final variables
Dec 8, 2021
Lambda and Final Parameters
Sep 22, 2021
Why and how to do technical interviews?
May 4, 2021
Creating a JUnit 5 ExecutionCondition
Feb 17, 2021
Automate Technical Documentation using Jamal
Feb 10, 2021
Unit testing private methods
Oct 21, 2020
Start a Java app without installing it
May 13, 2020
All you wanted to know about Throwable
Jan 1, 2020
JDK14 instanceof EA issue
Nov 27, 2019
Repeated code
Nov 6, 2019
Supporting Java 8
Oct 30, 2019
Creating a Video Tutorial
Oct 23, 2019
Apache Commons StringUtils Fluent Facade
Oct 23, 2019
A New Era for Determining Equivalence in Java?
Oct 23, 2019
Apache Commons StringUtils Fluent Facade
Oct 16, 2019
Java Record
Sep 25, 2019
Handling repeated code automatically
Sep 18, 2019
Your code is redundant, live with it!
Sep 11, 2019
Test coverage decreased and it is good (short, read)
Sep 6, 2019
[JAVA MAGAZIN] Code Generation 2
Sep 4, 2019
Tools to keep JavaDoc up-to-date
Aug 22, 2019
ValueTypes video, must see for juniors
Aug 21, 2019
Java Projects: Book Review
Jul 31, 2019
Annotation Handling and JPMS
Jul 3, 2019
Java hexadecimal floating point literal
Jun 26, 2019
Inject-able only in test?
Jun 19, 2019
Converting objects to Map and back
Jun 12, 2019
Extending abstract classes with abstract classes in Java
Jun 5, 2019
Reflection selector expression
May 29, 2019
Generating setters and getters using Java::Geci
May 22, 2019
Box old objects to be auto closable
May 15, 2019
Lazy assignment in Java
May 8, 2019
Creating a Java::Geci generator
May 1, 2019
Handling exceptions functional style
Apr 24, 2019
How to generate source code?
Mar 13, 2019
Get rid of pom XML... almost
Mar 6, 2019
var and language design
Oct 31, 2018
Comparing Golang and Understanding Value Types BaselOne
Oct 24, 2018
JEP 181 incompatibility, nesting classes / 2
Aug 8, 2018
Nesting Java classes
Jul 25, 2018
HTTP/2 Server Push
Jun 7, 2018
Upgrade to Java non-LTS version
Jun 3, 2018
Comparing Golang and Understanding Value Types Vilnius DevDays Video
May 24, 2018
Prevent Hacking with Modules in Java 9
May 24, 2018
Comparing Golang and understanding Java Value Types
May 23, 2018
Generating Source Code, a Compromise
May 21, 2018
DevDays Vilnius 2018
May 20, 2018
Comparing Golang and understanding Java Value Types
Feb 28, 2018
Java getting back to the browser?
Jan 31, 2018
Comparing files in Java
Jan 26, 2018
Rating Articles
Jan 26, 2018
Logging in Java 9
Jan 24, 2018
Format the code
Jan 18, 2018
Raid, backup and archive
Jan 10, 2018
Java 9 Module Services
Dec 20, 2017
Do We Need User Acceptance Test?
Nov 29, 2017
Split a File as Stream
Nov 22, 2017
Split as stream
Aug 30, 2017
noException in stream operation
Aug 16, 2017
New Regex Features in Java 9
Aug 9, 2017
What is private in Java 9?
Jul 19, 2017
Process Handling in Java 9
May 19, 2017
Who needs Java modules after all ?
May 3, 2017
Hacking the IntegerCache in Java 9
Mar 11, 2017
How object initialization works
Oct 19, 2016
Java 9 by Example, My New Book
Sep 21, 2016
Final volatile
Sep 11, 2016
Microbenchmarking comes to Java 9
May 25, 2016
Try and Catch in Golang
May 13, 2016
Do not (only) meet the budget
May 4, 2016
Architects Don't Decide
May 1, 2016
Code Naked
Apr 27, 2016
Comparing Golang with Java
Apr 20, 2016
Uptime
Apr 13, 2016
Random Ideas about Code Style
Mar 16, 2016
Implementing an annotation interface
Mar 9, 2016
Java compile in Java
Feb 17, 2016
Optimize the client for the server's sake
Feb 10, 2016
The Little Architect
Feb 8, 2016
Disclaimer
Feb 3, 2016
Creating proxy object using djcproxy
Jan 27, 2016
Creating a proxy object using cglib
Jan 20, 2016
Java Dynamic Proxy
Jan 13, 2016
Value types in Java: why should they be immutable?
Jan 6, 2016
Pointers in Java
Dec 30, 2015
Constructors, superconstructors and Swift
Dec 23, 2015
Do Not Create DSL for the Customer
Nov 25, 2015
Can you call non-static method from a static?
Nov 11, 2015
Do we need coding conventions?
Sep 10, 2015
The dumbest interview question ever
Sep 2, 2015
Use of optional is optional
Aug 26, 2015
Optional in collections
Aug 12, 2015
Some thoughts about yagni
Jul 29, 2015
Teenage Sex and What the sun.misc.Unsafe Misery Teaches Us Generally
Jul 22, 2015
Why we do not use comments
Jul 15, 2015
Reasons to stay up-to-date and your tasks to help the senses
Jun 10, 2015
Best Interview Answer Ever
Jun 3, 2015
Code is like public toilet
May 27, 2015
If you do it do it right
May 20, 2015
Test JavaBeans
May 13, 2015
Generics Names
May 6, 2015
Using Junit Test Name
Apr 29, 2015
Break Single Responsibility Principle
Apr 22, 2015
Sometimes you need tuples in Java. Or not.
Mar 25, 2015
The Magic Setter Antipattern
Feb 25, 2015
Quick, Cheap, Quality: choose two
Feb 18, 2015
Using junit for something else
Feb 11, 2015
Default methods and multiple inheritance
Feb 4, 2015
Do not unit test bugs
Jan 28, 2015
Calling grandparent methods in Java: you can not
Jan 21, 2015
Fine points of protection
Jan 14, 2015
Use copy paste programming!
Jan 8, 2015
Some more sentences on Java, private variables
Dec 24, 2014
Do not work on unimportant projects
Dec 17, 2014
Outsourcing, Do It Right
Dec 11, 2014
Why do we mock?
Dec 3, 2014
Unit test life?
Nov 26, 2014
Some Sentences about Java
Nov 19, 2014
Do all business logic on the client using JavaScript?
Nov 5, 2014
When null checking miserably fails
Oct 29, 2014
Do not use immutable in your API
Oct 22, 2014
Why to use String
Sep 17, 2014
Autoboxing
Sep 10, 2014
A classloading mystery solved
Sep 3, 2014
Name of the class
Aug 27, 2014
Named parameters in Java (updated)
Aug 20, 2014
Logical thinking...
Aug 13, 2014
Don not hit sysadmins with NPE!
Aug 6, 2014
What DSLs are not for
Jul 30, 2014
Java private, protected, public and default
Jul 2, 2014
How We Chose Framework
Jun 25, 2014
Logging or Commenting ?
May 28, 2014
Unit test deprecated methods
Apr 30, 2014
You can program bug free
Apr 24, 2014
Knowing the bits
Apr 24, 2014
bug-classification
Apr 16, 2014
We hate/love lambda
Apr 9, 2014
OpenSource License Manager
Apr 2, 2014
How not to use Java 8 default methods
Mar 26, 2014
Java 8 default methods: what can and can not do?
Mar 19, 2014
Documenting API using Concordion
Mar 11, 2014
Object Interning
Mar 5, 2014
Logging or debugging
Feb 26, 2014
Synthetic and bridge methods
Feb 22, 2014
Blog Service Message about syndication with DZONE and JCG
Feb 19, 2014
Never Test Logging
Feb 5, 2014
Use Java annotation deprecated the right way
Dec 25, 2013
Alan Turing Receives Royal Pardon
Dec 18, 2013
Design Pattern: Immutable Embedded Builder
Dec 11, 2013
Design Patterns: Pattern or Anti-Pattern, that is the question
Dec 4, 2013
Given, When, Then...
Nov 27, 2013
Semantic versioning is a simplification
Nov 21, 2013
Cheap programming languages
Nov 13, 2013
Creating Immutable Objects Run-Time
Nov 6, 2013
Defining constants in an interface: the good pattern
Oct 31, 2013
Defining constants in an interface
Oct 2, 2013
Do not return from 'try' block
Sep 25, 2013
Java memory leak
Sep 18, 2013
Something you did not know about the ternary operator
Sep 11, 2013
Don't write boilerplate, use scriapt
Sep 4, 2013
JavaDoc the Elephant
Aug 28, 2013
How to instantiate utility class
Aug 21, 2013
How to instantiate the system class
Aug 14, 2013
We do not use UML, we are agile
Aug 8, 2013
Should I write a new unit test?
Jul 27, 2013
Project lollipop
Jul 17, 2013
Should it be readable or should it work?
May 28, 2013
Exam, job interview
May 27, 2013
Partial redesign
Apr 11, 2013
Lead developer
Apr 7, 2013
To comment or not to comment, that is the question
Jan 30, 2013
Saving Bytes
Jan 30, 2013
No loop, do break
Jan 29, 2013
Problem with Java Security
Jan 29, 2013
How to mock the System.class
Jan 29, 2013
Does javac do optimization? Does not seem...
Jan 29, 2013
A little bit of testing