Core Java
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Serverless Java in 2026: AWS Lambda, Azure Functions, and Beyond
For years, Java and serverless computing seemed fundamentally incompatible. The JVM’s startup characteristics—loading classes, initializing the runtime, warming up JIT…
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Using SFTP with JSch
Secure File Transfer Protocol (SFTP) is a network protocol that provides secure file transfer capabilities over SSH (Secure Shell). It…
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Modern Java Language Features: Records, Sealed Classes, Pattern Matching
Java’s evolution over the past few years represents the most significant transformation in how we write code since the introduction…
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Kubernetes-Native Java: Beyond Traditional Deployment Models
The arrival of Kubernetes (K8s) as the de facto operating system for the cloud has forced a fundamental shift in…
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How to Reduce Object Header Size to Save Memory in Java 25
Memory efficiency has always been a critical concern for Java applications, especially in high-throughput systems, cloud-native workloads, and large in-memory…
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Reactive Programming in Java: A Comparative Approach
The drive for higher concurrency, lower latency, and better resource utilization has propelled reactive programming into the mainstream of the…
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GraalVM Native Image vs Traditional JVM: Understanding the Trade-offs
The introduction of GraalVM Native Image has revolutionized the Java landscape, offering a compelling alternative to the traditional Java Virtual…
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Fixing the JUnit Error: One Public Zero-Argument Constructor Required
When working with JUnit—especially JUnit 4—developers often encounter the error: java.lang.Exception: Test class should have exactly one public zero-argument constructor.…
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Analyze Offline Java Heap Dumps
Java Heap Dumps are snapshots of the memory of a Java process at a particular moment in time. They contain…
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