Blog
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Clean Architecture Design Pattern: How Does the Outer Database Layer Work in Microservices? (Person CRUD Example Without Violating the Dependency Rule)
In the world of software architecture, the quest for maintainable, scalable, and testable systems is never-ending. Enter **Clean Architecture**—a paradigm...
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Spring @PropertySource Classpath Wildcard Not Working? How to Read Properties in Java Config for Multiple Applications
In Spring applications, externalizing configuration via property files is a best practice for maintaining flexibility across environments, modules, or...
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Classpath Conflict Between jetty-maven-plugin and tomcat-jdbc 8.0.9+: Resolving ServiceConfigurationError with JuliLog
As Java developers, we often rely on powerful tools like the Jetty Maven Plugin for rapid web application development and `tomcat-jdbc` for efficient database...
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Java: ClassNotFoundException vs NoClassDefFoundError – Key Differences and When They Occur
Java developers often encounter errors related to class loading, and two of the most common culprits are `ClassNotFoundException` and `NoClassDefFoundError`....
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ClassNotFoundException: org.flywaydb.core.api.callback.FlywayCallback in Spring Boot: Why It Happens & How to Fix
If you’re working with Spring Boot and Flyway for database migrations, encountering a `ClassNotFoundException: org.flywaydb.core.api.callback.FlywayCallback`...
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Classloader Issues: How to Determine Which Library Versions (JAR Files) Are Loaded & Verify Class Versions in Your App Server
In Java applications, classloaders are the unsung heroes responsible for loading classes and resources into the JVM. They form a critical part of the runtime...
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ClassLoader getResourceAsStream Returns Null in Eclipse: Why Your File Location or API Usage Might Be Wrong
If you’ve ever worked on a Java project in Eclipse, chances are you’ve encountered the frustrating scenario where `ClassLoader.getResourceAsStream()` returns...
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Single Method Class: Best Approach? Constructor, Method Arguments, or Static Method?
In object-oriented programming (OOP), classes are designed to encapsulate data and behavior. But what if a class has only **one public method**? These "single...
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Class.prototype.method vs this.prototype.method: Does this.prototype Exist? Are They the Same? Inheritance Explained
JavaScript’s prototype-based inheritance is a powerful but often misunderstood feature. A common source of confusion is the difference between...
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How to Fix 'Class Not Found in Module' Warning When Creating IntelliJ Run/Debug Configuration for Java Application After BitBucket
If you’ve ever pulled code from BitBucket into IntelliJ IDEA and encountered the frustrating "Class Not Found in Module" warning when trying to run or debug...