Java
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Ad-Hoc Polymorphism: Interfaces vs. Traits vs. Type Classes
Three languages, three solutions to “different types, same operation” and three very different opinions about who gets to decide what…
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Implementing and Testing a Spring MVC HandlerInterceptor
In a Spring MVC application, interceptors provide a powerful mechanism to execute custom logic before and after processing HTTP requests.…
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Solving MySQL Incorrect String Value Exception with Java
When working with Java applications and MySQL, one of the most common database exceptions developers encounter is java.sql.SQLException: Incorrect string…
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Getting Process ID in Java
Every running Java Virtual Machine (JVM) application executes as an operating system process. Like every other process, the JVM is…
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LangChain4j RAG in Java: Embedding, Chunking, and Retrieval Without the Python Envy
A practical pipeline for document ingestion, embedding, and retrieval, all on the JVM, with a Spring AI comparison for good…
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The Diamond Problem and Default Methods
Java 8 gave interfaces actual behavior, then had to answer the same question C++ has been arguing about for thirty…
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Fixing Hibernate Illegal Attempt to Map a Non Collection Error
Hibernate is one of the most widely used Object Relational Mapping (ORM) frameworks in Java applications. It allows developers to…
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Java SQL String Building Example
Building SQL queries dynamically is a common requirement in Java applications. Search screens, filtering APIs, reporting modules, and administrative dashboards…
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Spring Boot 4 vs Quarkus 3 vs Micronaut 4: The Java Framework Decision in 2026
I have shipped real services on all three this year. Here is what actually separates them once the marketing slides…
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