Java Weekly, Issue 368
Last updated: October 1, 2021
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.
1. Spring and Java
>> Creating self-contained executable JARs [blog.frankel.ch]
Different approaches to creating executable and fat JARs – assembling, shading, and Spring Boot.
>> Guards and Pattern Matching [mail.openjdk.java.net]
Meet Guards – the proposal for having guards and conditions as part of Pattern Matching!
Also worth reading:
- >> Maven and Gradle Hibernate Enhance Plugin [vladmihalcea.com]
- >> Hibernate Reactive: Beta 2 [in.relation.to]
- >> YMNNALFT: Reactive Dataflow with Project Reactor [spring.io]
- >> YMNNALFT: HTTP Clients [spring.io]
Webinars and presentations:
Time to upgrade:
- >> Spring Framework 5.3.3 available now [spring.io]
- >> Red Hat Releases OptaPlanner 8 [infoq.com]
- >> Hibernate ORM 5.4.27.Final released [in.relation.to]
- >> Hibernate Validator 6.2.0.Final and 7.0.0.Final released [in.relation.to]
2. Technical
>> Patterns of Distributed Systems: Lease [martinfowler.com]
Hogging resources indefinitely? Let’s see how leasing can help us to ensure progress in a distributed system!
Also worth reading:
- >> Git Rebase vs. Git Merge Explained [reflectoring.io]
- >> M1, Viva and alien technology (2021) [abdullin.com]
3. Musings
>> Book Notes: Hell Yeah or No [reflectoring.io]
On what is worth doing or what isn’t – defining yourself, staying away from distractions, being a slow-thinker, and many more hidden gems!
Also worth reading:
- >> Measuring collaboration tool success – Still a fool with a tool? – Part 1 and Part 2 [blog.codecentric.de]
4. Comics
And my favorite Dilberts of the week:
>> Understanding Science [dilbert.com]
>> Keyboard Upgrades [dilbert.com]
>> Incoming Message [dilbert.com]
5. Pick of the Week
>> The Law of Unintended Consequences [markmanson.net]
