The Baeldung Weekly Review 7
Last updated: June 30, 2017
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.
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:
Let’s see what mid February has in store for us – surprisingly or not – a lot of good things.
On Java
=> Java 8 Friday Goodies: Map Enhancements
Good introduction of new APIs that are going to be available for Map in Java 8 – some previously verbose operations have just become simple.
=> Java 8 Performance Improvements: LongAdder vs AtomicLong
Java 8 will bring some nice performance improvements for multithreading – some real world numbers.
=> Free Java Profiling with Oracle Java Mission Control
Going beyond VisualVM – this is a real world example of the immense value of profiling your code.
=> Java 8 Cheatsheet
Useful little Java 8 cookbook for lambda syntax.
=> Mockito: Why You Should Not Use InjectMocks Annotation to Autowire Fields
Insightful analysis of using Mockito @InjectMocks to wire in mock dependencies (vs. clean explicit declaration). The author that originally wrote about injecting mocks has also reconsidered his original view on this.
On Spring
=> Webinar Replay: Introduction to Apache Tomcat 8
This needs little introduction – if you’re doing any work with Tomcat, it’s definitely worth an hour of your time.
=> Chaining URL View resolvers in Spring MVC
Work around the limitations of the standard InternalResourceViewResolver to get a deterministic order on the resolution process.
Technical
=> Cleaning Up Your Build
Having one must read article each week is becoming a thing for these weekly reviews.
This is the one this week – there have been a few very good articles – but this one really hits home. Wholly recommended.
=> Interface Segregation Principle: A Practical Example
A funny anecdotal tale on the merits of Interface Segregation. Segregate people!
=> Session-based Logging
This is becoming a good resource for logging and testing articles – another good article on getting the most out of your logging information.
=> A beginner’s guide to Git feature branches
Contributing to an open source project is something of an experience first time you do it. This will help get you started.
General Musings
=> AlienatingAtmosphere
Very interesting read for a little bit of perspective about our ecosystem.
Done
As I mentioned before – my plan for these reviews is to give you my own perspective of the best handful of articles to read that week.
If you have any suggestions on what I should read, to potentially include into the next review, drop me a line in the comments.
Also, if you feel that I missed a gem that came out this week, also let me know – these articles are editable at the end of the day.
Have a great week.
Eugen.
