Advanced topics for using the Constrained Application Protocol (CoAP)

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Use CoAP and the Observer design pattern to work with IoT devices.The first article in this series on the Constrained Application Protocol (CoAP) covered the basics and explored how to add CoAP messaging in your own Java applications. This article concludes the discussion by exploring advanced topics such...

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BYOTE, Part 1: Build your own custom test engine for JUnit 5

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The standard JUnit tests are fine, but sometimes you want to try something specific. Here’s how.Repeat after us: JUnit 5 is not a test runner. JUnit 5 is a platform. The JUnit 5 platform was designed from the ground up to solve one problem: to separate the development...

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Java garbage collection: The 10-release evolution from JDK 8 to JDK 18

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Introducing garbage collection, metrics, and trade-offsThe component of the HotSpot JVM that manages the application heap of your application is called the garbage collector (GC). A GC governs the whole lifecycle of application heap objects, beginning when the application allocates memory and continuing through reclaiming that memory for...

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