Java Core252 articles

Table of Contents Limitations of OpenJDK How Azul Platform Prime removes the limits of traditional JVMs A large global enterprise achieved a performance and efficiency milestone, running 10,000 Java Virtual Machines (JVMs) that collaborate and share optimizations with one another, using …

Table of Contents JEPs LTS journey (focus on coding but not only):References: The information technology landscape is changing rapidly. This is not only due to the utilization of AI and new methodologies [8], or business requirements trying to keep up, …

Table of Contents JEP OverviewNew featuresCore LibsHotSpotSecurity LibsJava Flight RecorderRepreviews and FinalizationsJEP 505: Structured Concurrency (Fifth Preview)JEP 506: Scoped ValuesJEP 507: Primitive Types in Patterns, instanceof, and switch (Third Preview)JEP 508: Vector API (Tenth Incubator)JEP 510: Key Derivation Function APIJEP …

Decades ago, I contributed to a very interesting project called SunSPOT at SUN Microsystems. It was a small device with wireless connectivity, built-in sensors, running on Java (compatible with runtime 1.6), and powered by battery. It enabled the design of …

Table of Contents What is a multidimensional array in Java?Declaring a multidimensional arrayMixing Bracket PositionsCreating a multidimensional arrayDefault values in arraysUnderstanding jagged arraysUnderstanding JVM bytecodes for array creationBytecode for arrays of primitivesBytecode for arrays of objectsBytecode for multidimensional arraysPerformance considerations …

After dismissing Java for eight years as a “passing trend for developers who couldn’t handle real programming,” one developer’s 25-year journey reveals how Java evolved from a language he distrusted to the foundation of his career, and why he believes it’s still one of the most valuable investments you can make in 2025.

Table of Contents ObjectsvolatileLocaleCollatorNormalizer After Java, What’s Old? Part I – Collections, let’s now have a look at less known old utility classes that can still be useful. Everything in this series will be in Java 8 and later, so …

Table of Contents Sustainable engineering in action Cost and carbon reduction: an illustrative example Net-zero goals start at the platform levelReady to see the difference? Reducing spend in the cloud is a top priority for many organizations, and a high-performance Java platform …

Table of Contents VideoPodcast AppsContent This is the final part of the JCON 2025 interviews with a lot of tips and tricks! In the three previous podcasts, we featured interviews from the JCON conference on “Being a better Java developer,” …

One of the discussions that always leaves me with both doubts and excitement is the one about system architecture. Ever since I started diving deeper into programming, I’ve encountered questions like how to separate packages and modules: is it really …