Core Java
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Kotlin 2.x vs Java 21+The Language Choice for New JVM Projects
The K2 compiler shipped. Multiplatform went stable. Java landed records, pattern matching, and virtual threads. The gap genuinely narrowed —…
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Sealed Classes and Exhaustive Pattern Matching: How They Change API Design, Not Just Syntax
Both features have been stable since Java 17 and 21. Most articles show the syntax. Almost none explain how they…
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Java Module System in 2026: Still Ignored, Still Relevant
JPMS shipped with Java 9 in 2017. Nearly a decade later, enterprise adoption remains stubbornly low. This is not a…
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The Object Allocation Tax: Why Your Java Service Is 40% GC and How the JIT’s Escape Analysis Both Helps and Misleads You
A ground-level look at how HotSpot C2 decides between scalar replacement and heap allocation, the everyday patterns that silently defeat…
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OpenRewrite: The Automated Migration Tool That’s Quietly Changing How Teams Upgrade Java
It started at Netflix, migrated the Jakarta EE TCK, and is now the dominant automation tool for Java modernization according…
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Virtual Threads One Year in Production: What Teams Got Wrong and What Actually Improved
Project Loom shipped in Java 21 in September 2023. Two-plus years of real production data — including Netflix’s deadlock post-mortem,…
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Java 21 vs Java 25 LTS: The Migration Decision Framework Teams Are Avoiding
Two LTS releases now coexist. Virtual thread pinning is fixed. Memory is down 22%. Startup is faster. The gap is…
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Building Circuit Breakers in Spring Boot with Resilience4j
In distributed systems, failures are expected. Services can become slow, unavailable, or completely unresponsive due to network issues, overload, or…
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JDK 24 Security Updates
JDK 24 introduces a range of important security enhancements aimed at strengthening Java applications against modern threats. With the rapid…
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