Java Web Weekly 112
Last updated: June 24, 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:
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
>> JUnit 5 – Setup [codefx.org]
A quick intro to what’s shaping up to become a very good step forward for JUnit – which bodes well for the entire ecosystem.
>> Reactor 2.5 : A Second Generation Reactive Foundation for the JVM [spring.io]
An update on what’s going on with the story reactive systems – seems like a lot of progress is being made.
>> An Ingenious Workaround to Emulate Sum Types in Java [jooq.org]
Some fun pushing the boundaries of java generics.
>> The New Hibernate ORM User Guide [in.relation.to]
A big update to the Hibernate docs, which are now going to 5.1 by default.
>> Memory Leaks: Fallacies and Misconceptions [plumbr.eu]
Some of the basics of what’s healthy and what’s when looking at the memory consumption of a JVM – simple and to the point.
>> Setting Up Distributed Infinispan Cache with Hibernate and Spring [techblog.bozho.net]
A conversationally written guide on setting up a caching layer for Hibernate with Spring. This will definitely come in handy for at least a few developers out there.
>> The Mute Design Pattern [jooq.org]
Hehe – now let’s have some fun.
Also worth reading:
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>> What’s new in Java EE Security API 1.0? [arjan-tijms.omnifaces.org]
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>> Developing Spring Boot applications with Kotlin [spring.io]
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>> Spring Batch Tutorial: Reading Information From a File [petrikainulainen.net]
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>> Distributed Tracing with Spring Cloud Sleuth and Spring Cloud Zipkin [spring.io]
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>> Logging Tips for Power Users: Contextual Logging [loggly.com]
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>> Creating Custom SpringBoot Starter for Twitter4j [sivalabs.in]
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>> Kotlin 1.0 Brings Language and ABI Stability [infoq.com]
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>> Spring Boot & Apache CXF – How to SOAP in 2016 [codecentric.de]
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>> Java EE and Microservices in 2016? [infoq.com]
Webinars and presentations:
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>> Hands on Spring Security [infoq.com]
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>> Cloud Native Data Flow Orchestration [infoq.com]
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>> Creating Java REST Servers from Swagger API Definitions [infoq.com]
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>> Intro to Spring Boot for the Web Teir [spring.io]
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>> Developing cloud-native applications with the Spring Tool Suite [spring.io]
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>> Behind the OSS curtain – How we manage Spring [spring.io]
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>> What’s new in Spring Data Gosling-Fowler [spring.io]
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>> Webinar: Spring Boot Authentication… and More! [spring.io]
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>> Webinar: Up and Running with Spring Boot in NetBeans IDE [spring.io]
Time to upgrade:
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>> Spring Data Release Train Hopper M1 Released [spring.io]
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>> Spring REST Docs 1.1.0.M1 [spring.io]
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>> Spring AMQP 1.6.0 Milestone 1 (and 1.5.4) Available [spring.io]
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>> Spring Integration 4.3 M1 is Available [spring.io]
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>> Hibernate ORM 5.0.8.Final [in.relation.to]
2. Technical
>> Is Your Computer Stable? [codinghorror.com]
A solid set of tests you can (and should) run against your rig to make sure it’s in working order.
>> Stack Overflow: The Architecture – 2016 Edition [nickcraver.com]
Some cool numbers and behind the scene details of running StackOverflow. Very interesting to see what it takes to run SO the old-school way.
Also worth reading:
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>> Hello world in a production environment [giorgiosironi.com]
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>> MySQL metadata locking and database transaction ending [vladmihalcea.com]
3. Musings
>> Everything you need to know about the Apple versus FBI case [troyhunt.com]
This is a long read, but an important one given the recent news in the privacy/security world.
>> The Paradox of Autonomy and Recognition [queue.acm.org]
An interesting (yet long) read about office politics and evaluating the work of other developers.
>> High Stakes Programming by Coincidence [daedtech.com]
Committing a fix you don’t quite understand is almost never a good idea, and imagining the stakes are high is an interesting way to think about it and quickly reach a decision.
Also worth reading:
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>> Dear Github [github.com]
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>> Cultivating weirdness [lemire.me]
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>> Is Programming Art? [daedtech.com]
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>> Things you don’t need for v1.0 [successfulsoftware.net]
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>> Architectural Folk Models [kitchensoap.com]
4. Comics
And my favorite Dilberts of the week:
>> Why are you picking this vendor? [dilbert.com]
>> Let’s just say I’m “comfortable” [dilbert.com]
>> This is tech support. How may I abuse you? [dilbert.com]
5. Pick of the Week
>> Shields Down [randsinrepose.com]
