Yes, we're now running our Black Friday Sale. All Access and Pro are 33% off until 2nd December, 2025:
Java Web Weekly 50
Last updated: December 18, 2020
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.
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 last year, I decided to track my reading habits and share the best stuff here, on Baeldung. Haven’t missed a review since.
Here we go…
1. Spring and Java
>> Artfully Benchmarking Java 8 Streams and Lambdas [infoq.com]
A quick, journalistic look at Java 8 Streams performance – something we’re starting to be aware of in the community.
>> Spring Boot Memory Performance [spring.io]
This writeup is going to be referenced for a long time, as this kind of low level information is really missing from the Spring ecosystem.
>> Spring Data JPA Tutorial: Adding Custom Methods Into All Repositories [petrikainulainen.net]
I had to do something similar several times in practice – adding a custom method into a Spring Data repo – so this guide is a welcome reference.
>> 5 reasons why you should consider upgrading your applications to Spring 4 [codeleak.pl]
Short and to the point – upgrading to Spring 4 is a solid productivity boost across the board.
>> Hibernate Logging Guide – Use the right config for development and production [thoughts-on-java.org]
A must read if you’re working with Hibernate and aren’t quite sure how your logging should be set up.
>> The danger of @InjectMocks [blog.frankel.ch]
Just because we can do some low level stuff in Java doesn’t mean we should. Mockito made some choices about all of that, and about what you can and cannot do with the tool.
This is a quick dive into the way mocks can be injected at runtime.
>> 3 Reasons why You Shouldn’t Replace Your for-loops by Stream.forEach() [jooq.org]
A very interesting and pragmatic look at the Java 8 functional story, now that it’s no longer new and shiny.
Also worth reading:
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>> Easily Create Java Agents with Byte Buddy [infoq.com]
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>> Alert Dialogs Do Not Appear When Using WebDriverBackedSeleniu [symphonious.net]
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>> CompletableFuture as a Trampoline for Tail Recursion Elimination [sebastian-millies.blogspot.com]
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>> Running Eclipse Neon on a Custom Java 9 Image [waynebeaton.wordpress.com]
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>> Spring Boot 1.3 Released Featuring DevTools and ASCII Art [infoq.com]
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>> HTTP Status 405 with Spring Security with custom form login using JavaConfig [baselogic.com]
Webinars and presentations:
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>> Transforming Code to Java 8 [infoq.com]
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>> Introducing RxJava into a Spring Boot REST API [infoq.com]
Time to upgrade:
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>> Spring Framework 5.0 Roadmap Update [spring.io]
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>> Spring Social Facebook 2.0.3 Released [spring.io]
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>> Spring REST Docs 1.0.1.RELEASE [spring.io]
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>> IntelliJ IDEA 15.0.2 is Available [jetbrains.com]
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>> Apache Commons Validator 1.5.0 released! [mail-archives.apache.org]
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>> JDeps Maven Plugin 0.2 Released [codefx.org]
2. Technical and Musings
>> Clearing Up the Integrated Tests Scam [thecodewhisperer.com]
I listened to the “Integration Tests Are a Scam” and it really opened up way of thinking about the way I did testing back then.
Later on I continued to learned from J.B. live, so I’m excited to see here a thought out analysis on the topic. Good stuff.
Also worth reading:
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>> Monads demystified [codecentric.de]
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>> About Pool Sizing [github.com]
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>> Learn To Code, It’s Harder Than You Think [mikehadlow.com]
3. Comics
And my favorite Dilberts of the week:
>> I have a reflexive urge to disagree with you [dilbert.com]
>> I value substance over style. How’s that working out? [dilbert.com]
>> Someone was raised with to much self-esteem [dilbert.com]
4. Pick of the Week
>> My Favorite Database is the Network [lucumr.pocoo.org]
