Yes, we're now running our Black Friday Sale. All Access and Pro are 33% off until 2nd December, 2025:
Baeldung Weekly Review 44
Last updated: October 16, 2018
Modern software architecture is often broken. Slow delivery leads to missed opportunities, innovation is stalled due to architectural complexities, and engineering resources are exceedingly expensive.
Orkes is the leading workflow orchestration platform built to enable teams to transform the way they develop, connect, and deploy applications, microservices, AI agents, and more.
With Orkes Conductor managed through Orkes Cloud, developers can focus on building mission critical applications without worrying about infrastructure maintenance to meet goals and, simply put, taking new products live faster and reducing total cost of ownership.
Try a 14-Day Free Trial of Orkes Conductor today.
Modern software architecture is often broken. Slow delivery leads to missed opportunities, innovation is stalled due to architectural complexities, and engineering resources are exceedingly expensive.
Orkes is the leading workflow orchestration platform built to enable teams to transform the way they develop, connect, and deploy applications, microservices, AI agents, and more.
With Orkes Conductor managed through Orkes Cloud, developers can focus on building mission critical applications without worrying about infrastructure maintenance to meet goals and, simply put, taking new products live faster and reducing total cost of ownership.
Try a 14-Day Free Trial of Orkes Conductor today.
Mocking is an essential part of unit testing, and the Mockito library makes it easy to write clean and intuitive unit tests for your Java code.
Get started with mocking and improve your application tests using our Mockito guide:
Spring 5 added support for reactive programming with the Spring WebFlux module, which has been improved upon ever since. Get started with the Reactor project basics and reactive programming in Spring Boot:
Since its introduction in Java 8, the Stream API has become a staple of Java development. The basic operations like iterating, filtering, mapping sequences of elements are deceptively simple to use.
But these can also be overused and fall into some common pitfalls.
To get a better understanding on how Streams work and how to combine them with other language features, check out our guide to Java Streams:
Explore Spring Boot 3 and Spring 6 in-depth through building a full REST API with the framework:
Yes, Spring Security can be complex, from the more advanced functionality within the Core to the deep OAuth support in the framework.
I built the security material as two full courses - Core and OAuth, to get practical with these more complex scenarios. We explore when and how to use each feature and code through it on the backing project.
You can explore the course here:
Modern software architecture is often broken. Slow delivery leads to missed opportunities, innovation is stalled due to architectural complexities, and engineering resources are exceedingly expensive.
Orkes is the leading workflow orchestration platform built to enable teams to transform the way they develop, connect, and deploy applications, microservices, AI agents, and more.
With Orkes Conductor managed through Orkes Cloud, developers can focus on building mission critical applications without worrying about infrastructure maintenance to meet goals and, simply put, taking new products live faster and reducing total cost of ownership.
Try a 14-Day Free Trial of Orkes Conductor today.
Spring Data JPA is a great way to handle the complexity of JPA with the powerful simplicity of Spring Boot.
Get started with Spring Data JPA through the guided reference course:
Refactor Java code safely — and automatically — with OpenRewrite.
Refactoring big codebases by hand is slow, risky, and easy to put off. That’s where OpenRewrite comes in. The open-source framework for large-scale, automated code transformations helps teams modernize safely and consistently.
Each month, the creators and maintainers of OpenRewrite at Moderne run live, hands-on training sessions — one for newcomers and one for experienced users. You’ll see how recipes work, how to apply them across projects, and how to modernize code with confidence.
Join the next session, bring your questions, and learn how to automate the kind of work that usually eats your sprint time.
Regression testing is an important step in the release process, to ensure that new code doesn't break the existing functionality. As the codebase evolves, we want to run these tests frequently to help catch any issues early on.
The best way to ensure these tests run frequently on an automated basis is, of course, to include them in the CI/CD pipeline. This way, the regression tests will execute automatically whenever we commit code to the repository.
In this tutorial, we'll see how to create regression tests using Selenium, and then include them in our pipeline using GitHub Actions:, to be run on the LambdaTest cloud grid:
Yes, we're now running our Black Friday Sale. All Access and Pro are 33% off until 2nd December, 2025:
At the very beginning of 2014 I decided to start to track my reading habits and share the best stuff here, on Baeldung.
Curating my reading has made it more purposeful and diverse – and I’m hopefully providing value to you as well by allowing the best content of the week to raise to the top.
Here we go…
1. Java
>> Optional in Java SE 8
An useful guide to using the new Optional class the way it was meant to when it was introduced into the language. Like everything else, there’s a good way to use it, and then there’s all the other ways.
>> Better nulls in Java 10?
JDK 10 is still a long ways away – so now is the time for thought experiments. This is one of those – useful in the fact that it makes it clear that the semantics of null in Java can definitely be improved and should be.
>> 10 Things You Didn’t Know About Java
Cool list of corner cases and surprises in Java – an interesting read even if you’ve been doing Java for years.
>> On Java Generics and Erasure
An quick educational foray into how type erasure works in Java.
>> Beyond Thread Pools: Java Concurrency is Not as Bad as You Think
A very high level plotting of the Java Concurrency ecosystem – some of the available solutions and paradigms to get you started and knowing your options.
>> Hibernate collections optimistic locking
Another deep dive into Hibernate – this time showing how important the modeling of parent-child associations is for the way you’re able to concurrently and reliably access data.
And a few other Releases and Announcements that I’m excited about or are just noteworthy in the broader Java ecosystem:
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Elasticsearch 1.4.0 and 1.3.5 released
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Elasticsearch Shield: You Know, For Security (Coming Soon)
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IntelliJ IDEA 14 is Released!
2. Spring
>> Log Management for Spring Boot Applications with Logstash, Elasticsearch and Kibana
ELK is a beautiful thing. I’ve been using it for a while now and it rocks.
>> Spring Caching abstraction and Google Guava Cache
It makes a lot of sense to use the Guava Cache to power the caching in a Spring app. This is how.
>> A quality @Qualifier
I’ve mainly used @Qualifier as an interview question, but from time to time it can turn a tricky situation into an elegant solution. And, as Josh points out – it’s been doing it for years.
>> Spring from the Trenches: Resetting Auto Increment Columns Before Each Test Method
An interesting deep-dive into working with a large suite of integration tests – how to make sure your results are correct and reproducible, and that your tests are idempotent.
Finally – a few cool Releases and Webinars from Spring:
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>> Spring Data Evans SR1 released
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>> Spring Cloud 1.0.0.M2 Available Now
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>> Webinar Replay: Building “Bootful” UIs with Spring Boot and Vaadin
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>> Webinar Replay: Content-enabled Web and Mobile Applications with Spring, Groovy and Crafter
3. Technical and Musings
>> An Empty Line is a Code Smell
“A method should do one thing”. It took a long time until I really internalized this fact and started actively looking for it in my own design.
And so I read this piece in that context, with a focus on improving my own design. That’s how I’m sharing it here as well.
>> How to Get Your Company to Stop Killing Cats
We all have our war stories. But getting a group of people to change is one hell of a thing – that’s why I find it so very cool when it actually works out for the better.
Doesn’t happen often though.
>> Collection Pipeline
A very well put together piece on the power and the breadth collection pipelining operations. Makes me want to do some Clojure today.
4. Comics
And now for the part that you’re actually reading my weekly review – XKCD:
>> Star Ratings
>> goto
>> Cemetery
5. Pick of the Week
I recently introduced the “Pick of the Week” section here in my “Weekly Review”. The interesting part is that it’s entirely exclusive to my email list subscribers.
So – if you came to this article from my email list, you have the pick already – hope you enjoyed it. If not – feel free to subscribe and you’ll get the next one.
