Core Java
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How to Find Matched Rules in Drools
In Drools-based applications, it is often necessary to know which rules were executed for a given set of facts. This…
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Building Debian Packages for Java Applications with jdeb
Distributing Java applications in enterprise and server environments often involves more than simply shipping a JAR file. Production deployment environments…
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Elixir’s “Let It Crash” Philosophy: When Failing Fast Is a Feature
Why the world’s most reliable systems embrace failure instead of preventing it Picture this: You’re building a system that must not go…
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How to Conditionally Skip Tests in TestNG
In real-world automation frameworks, running every test on every execution is neither practical nor efficient, as test execution often depends…
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An Introduction to @ClassTemplate in JUnit 5
JUnit 5 offers several extension points that allow developers to customize how tests are discovered and executed. One of these…
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Computing Cosine Similarity Between Two Vectors in Java
Cosine similarity is a common metric used to measure how similar two vectors are, based on the angle between them…
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Maven 4 Highlights
Apache Maven 4 is the next major version of the widely-used build automation and project management tool for Java projects.…
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Kotlin’s Null Safety: How to Fix Java’s Billion-Dollar Mistake Without Breaking Everything
In 2009, computer scientist Tony Hoare apologized for inventing the null reference in 1965. He called it his “billion-dollar mistake,”…
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Apache POI HSSFWorkbook: Read, Write, and Stream Excel
Working with Excel files is a common requirement in enterprise Java applications, whether for reporting, data exchange, or bulk uploads.…
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