The Baeldung Weekly Review 8
Last updated: July 20, 2016
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.
Distributed systems often come with complex challenges such as service-to-service communication, state management, asynchronous messaging, security, and more.
Dapr (Distributed Application Runtime) provides a set of APIs and building blocks to address these challenges, abstracting away infrastructure so we can focus on business logic.
In this tutorial, we'll focus on Dapr's pub/sub API for message brokering. Using its Spring Boot integration, we'll simplify the creation of a loosely coupled, portable, and easily testable pub/sub messaging system:
On Spring
Lots of Spring releases this week:
- => Spring Data Release Train Codd Goes GA – This was quite a sustained effort from the Spring Data team, with Release Candidates and Service Releases flying left and right during the last few weeks. Nice to see Spring Data out and about – time to go upgrade my own projects to this release.
- => Spring Framework 4.0.2 & 3.2.8 Released – the framework itself also saw an upgrade with quite a lot of bug fixes and some security vulnerabilities patched.
- => Spring Security 3.2.1 and 3.0.5 Released – Spring Security has also been upgraded this week – this brings some maturity to the new Java-style Configuration support, and general upgrades to the newly released Spring versions.
Now, on to the webminar replays – of which there are many:
- => Webinar Replay: Introduction to Apache Tomcat 8 – one hour well spent to get some insight into the work that has gone into Tomcat 8.
- => SpringOne2GX 2013 Replay: Running Spring in Amazon Web Services
- => Spring on Java 8
So – all in all, a very busy week for the Spring guys.
On Java
=> Monadic futures in Java 8: How to organize your data flow and avoid callback hell
Good teaser on going beyond async computations with callbacks and using monads – it should be clear by now that Java 8 will change all APIs.
=> Coping with Methods with Many Parameters
A good article about best API practices for designing operations with many optional inputs. This is of course standard in many APIs, but it’s well worth reiterating since some APIs are still far from getting it right.
Technical
=> Uber Hypermedia – Minimalism on the Web
An elegant proposal for a new and very light media type – Uber Hypermedia (don’t let the name fool you). The examples look very clean and readable – you check check them out on github.
=> The regex that broke a server
Cool usecase of regex backtracking that leads to an O(2^n) operation.
Why write tests – the motivation of investing in your own piece of mind. Well worth it.
=> 5 Unit Testing Mistakes
Good takeaways for unit testing practitioners (everyone I hope) – and not only for developers starting out.
General Musings
=> Why Social Situations Exhaust Introverts: A Programmer’s Take
A personal and insightful take on what it means to be an introvert, as well as what good, energy filled, experimentation driven progress looks like. This versus the energy draining experience of not making any measurable, visible progress towards some clearly defined goal.
If you click through, you’ll notice that it’s long – so if you’re thinking: Should I read this one? – I’ll help you out: Yes you should.
Done
That’s it for this week – some good reads, from the new hypermedia type proposal to what looks to be maybe the start of a series on what it means to be an introvert.
We’re also getting closer to the release of Java 8 – which is going to probably be the catalyst for a lot of change, especially in API land.
Until next time.
