Java Records and Sealed Classes
Java 17 introduced records and sealed classes as standard features. Records eliminate boilerplate for simple data classes. Sealed classes restrict […]
Java Optional and Null Safety
NullPointerException is Java’s most common runtime error. Tony Hoare, who invented null references, called it his “billion-dollar mistake.” Java 8
Java Dependency Injection Explained
Dependency Injection (DI) is a design pattern where objects receive their dependencies from external sources rather than creating them internally.
Java Logging Best Practices
Logging is how your application tells you what happened when you weren’t watching. Good logs help you debug problems, track
Java Unit Testing with JUnit
Unit tests verify that individual pieces of your code work correctly. They catch bugs early, make refactoring safer, and serve
Java Design Patterns
Design patterns are reusable solutions to common programming problems. They’re not code you copy and paste, but templates for structuring
Java vs Other Languages for First Job
You want to break into software development. You’ve heard you should learn Python. Or JavaScript. Or Java. Everyone has opinions,
Is Java Worth Learning in 2026?
Java turned 30 in 2025. In tech years, that’s ancient. New languages keep appearing: Go, Rust, Kotlin, TypeScript. So is
Java Developer Salary Guide
Java developers earn competitive salaries across experience levels and locations. This guide breaks down what you can expect based on
Java Developer Career Path
Java has been a top programming language for nearly 30 years. Companies use it for banking systems, e-commerce platforms, Android
Java vs Swift
Java and Swift are the dominant languages for mobile development on their respective platforms. Java powers Android (along with Kotlin),
Java Exceptions Cheat Sheet
Exceptions are Java’s way of handling errors and unexpected conditions. This cheat sheet covers the exception hierarchy, common exceptions you’ll