Java Web Weekly 40
Last updated: April 16, 2022
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:
Handling concurrency in an application can be a tricky process with many potential pitfalls. A solid grasp of the fundamentals will go a long way to help minimize these issues.
Get started with understanding multi-threaded applications with our Java Concurrency 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:
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.
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
>> Spring From the Trenches: Parsing Date and Time Information From a Request Parameter [petrikainulainen.net]
A solid, to the point write-up on passing date information to a Spring controller.
>> Annotation-driven event listeners in Spring 4.2+ [solidsoft]
The new event infrastructure in Spring 4.2 is way cool – I’ve been using it since it made it into the first milestone and I’ve never implemented ApplicationListener since 🙂
>> React.js and Spring Data REST: Part 3 – Conditional Operations [spring.io]
A strong installment of the Spring Data REST Series this week, looking at versioning and conditional operations in HTTP.
This series is getting better and better.
>> ${… } placeholders support in @Value annotations in Spring [codeleak.pl]
Some interesting, advanced usecases of working with properties in Spring.
>> Case for Defaulting to G1 Garbage Collector in Java 9 [infoq.com]
Looks like G1 is finally going to be the default – no more switching to it manually. That being said – I’ve had a few instances (very few) where G1 wasn’t the best option, so it’s always important to test these kind of low level changes.
Also worth reading:
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>> Practical Java Domain Specific Language Tutorial [alexecollins.com]
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>> Spring Cloud Sidecar – Initialization of Nodes [java-allandsundry.com]
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>> ByteWatcher from JCrete [javaspecialists.eu]
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>> Configuring Google as OAuth2 authorization provider in Spring Boot [dreamix.eu]
Webinars and presentations:
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>> Akka Streams: Streaming Data Transformation à la Carte [infoq.com]
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>> Federating the AWS CLI with an Identity Provider [infoq.com]
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>> Data Migration at Scale with RabbitMQ and Spring [infoq.com]
Time to upgrade:
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>> Git 2.6 Release Notes [raw.githubusercontent.com]
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>> Ratpack 1.0 Launches Aiming to make Asynchronous Programming Easier on the JVM [infoq.com]
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>> Hibernate 5.0.2 Released [in.relation.to]
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>> Hibernate Validator 5.2.2 released [in.relation.to]
2. Technical
>> Persistence in CQRS Read Models [squirrel.pl]
This is a series I’m following with a lot of interest. Event Sourcing isn’t a good fit for every system, but where it does fit, it’s an order of magnitude architectural improvement over a traditional approach.
>> Microservice Deployment [toomuchcoding]
As I do more and more microservice work – I found this piece quite insightful and anchored in the day to day reality of getting a system deployed.
>> Chaos Engineering Upgraded [netflix.com]
The mythical chaos monkey Netflix unleashed a few years ago is growing up.
Also worth reading:
- >> Introducing Reactive Streams [infoq.com]
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>> New AWS Security Courses (Fundamentals & Operations) [aws.amazon.com]
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>> Troy’s ultimate list of security links [troyhunt.com]
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>> Introduction to EC2 Container Service [infoq.com]
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>> Why All The Fear of Electronic Voting? [techblog.bozho.net]
3. Musings
>> Remote-First vs. Remote-Friendly [zachholman.com]
Building a remote-first workplace is tough, but it can be done and done well. Times, they are a changin.
>> Prediction Markets for Software Estimates [daedtech.com]
A fun read about estimations and an interesting proposal to solve it. Not sure if it would actually work, but I would definitely be fun to try.
Also worth reading:
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>> Two years of blogging [vladmihalcea.com]
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>> A Taxonomy Of Comments [codefx.org]
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>> Avoiding the Dreaded Experience Tuples [daedtech.com]
4. Comics
And my favorite comics of the week:
>> Open Workspace Environment [dilbert.com]
>> I hope the next thing you want is sarcasm [dilbert.com]
5. Pick of the Week
After an intensive week of recording, I just launched the Starter Class of “REST With Spring”:
>> REST with Spring – The Starter Class
It feels good to stop calling it “upcoming”.
