Java Web Weekly, Issue 113
Last updated: December 18, 2020
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 Boot with Scala [java-allandsundry.com]
This is very cool if you’re into Scala.
I’m personally moving towards Clojure instead of Scala, but this still looks quite interesting to me.
>> Log management in Spring Boot [frankel.ch]
How to configure logging in Spring Boot (without having to go the native XML route) – very quick and to the point (much like Boot).
>> JUnit 5 – Basics [codefx.org]
Thought last weeks JUnit 5 post was all there was? Think again 🙂
I’m super excited about finally seeing some actual progress in the JUnit space, so this series should be fun to read and follow along with.
>> (Ab)using Java 8 FunctionalInterfaces as Local Methods [jooq.org]
As always, a very nice exploration of a lambdas in Java 8.
And I can no longer call lambdas “new”, they’re now just an arrow in the quiver.
>> Java EE 8 MVC: Working with form parameters [mscharhag.com]
A quick writeup that continues to explore the mapping of parameters to Controllers in Java EE 8. Very quick and to the point.
>> JetBrains Releases Kotlin 1.0 [infoq.com]
Kotlin isn’t something I’ve done any actual work with myself. But it is the official 1.0 release of what looks to be a language with some interesting syntax choices – which doesn’t happen all that often.
Also worth reading:
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>> Spring Batch Tutorial: Reading Information From a Database [petrikainulainen.net]
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>> Pretty Print JSON Per Request With Spring MVC [techblog.bozho.net]
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>> Speed up Gradle build on TravisCI [lkrnac.net]
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>> A Very Peculiar, but Possibly Cunning Kotlin Language Feature [jooq.org]
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>> Releases and the Eclipse Development Process [waynebeaton.com]
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>> Lazy Vals in Scala: A Look Under the Hood [codecentric.de]
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>> IntelliJ IDEA 16 Public Preview [jetbrains.com]
Webinars and presentations:
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>> Josh Long on Spring Boot, Spring Cloud and Microservices [infoq.com]
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>> Spring MVC 4.2: New and Noteworthy [infoq.com]
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>> Webinar replay: What’s new in Spring Data Gosling-Fowler [spring.io]
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>> Building a Next-generation Cloud e-Commerce Platform with Spring [infoq.com]
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>> From Zero to Hero with Spring WebSocket [spring.io]
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>> Hands on Spring Security 4.1 [spring.io]
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>> Microxchg 2016: A pattern language for microservices [plainoldobjects.com]
Time to upgrade:
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>> Spring Data Gosling SR4 released [spring.io]
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>> Hibernate Validator 5.2.4.Final is out [in.relation.to]
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>> Spring XD 1.3.1 GA and Flo for Spring XD 1.0.1 GA released [spring.io]
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>> Spring Framework 4.2.5 available now [spring.io]
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>> Spring Session 1.1.0 Released [spring.io]
2. Technical
>> Automate Deployment & Management of Docker Cloud/Virtual Java Microservices with DCHQ [infoq.com]
Docker containers, continuous delivery of microservices and Event Sourcing.
Yep, every word of that sentence is an overused buzzword, yet the article solid and detailed, so worth a careful read if you’re doing work in this area.
>> Bind Parameters for Database Queries [martinfowler.com]
This weeks installment of the “Web Security Basics” series – getting into some foundation aspects of input sanitization.
And of course, SQL injection is not the only game in town.
>> Default HotSpot Maximum Direct Memory Size [marxsoftware.com]
Getting into some of the low level JVM details of direct memory access and sizing.
Also worth reading:
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>> The IPv6 Numeric IP Format is a Serious Usability Problem [zerotier.com]
3. Musings
>> Why do you write accessor methods? [codecentric.de]
An “back to basics” style exploration of a core object oriented concept – accessor methods.
>> Splunk vs ELK: The Log Management Tools Decision Making Guide [takipi.com]
A solid guide to picking a log management tool and getting the most out of it.
>> Escaping the Legacy Skill Quicksand [daedtech.com]
Common sense advice about stepping up your tech skill game.
>> Controlling vehicle features of Nissan LEAFs across the globe via vulnerable APIs [troyhunt.com]
Hacking a connected car – this is scary stuff.
Also worth reading:
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>> Don’t beat them, make them irrelevant [lemire.me]
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>> Memorising Keyboard Shortcuts [code-cop.org]
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>> The SOLID Principles in Real Life [daedtech.com]
4. Comics
And my favorite Dilberts of the week:
>> You probably shouldn’t put your suggestions in form of questions [dilbert.com]
>> He’ll be under-communicating all day [dilbert.com]
>> It sounds better when you don’t do the math [dilbert.com]
5. Pick of the Week
I recently discovered I writer that I’m thoroughly enjoying:
>> The Gervais Principle, Or The Office According to “The Office” [ribbonfarm.com]
