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Series
A practical, value-first approach to learning the most impactful Java features introduced from Java 8 and beyond
As Java Developers, we鈥檝e created many simple classes (with a list of fields, getters, and setters) to represent an object or a subset of it. Most of the time we also need to override the toString, equals, and hashcode methods. Although IDEs can help...
Part 1: Understanding Lambdas for Beginners 馃 What鈥檚 a Lambda? A lambda expression is a short way to write anonymous functions (a function without a name): 馃摑 Basic Syntax (parameters) -> { body } Or shorter if it's one line: (param) -> doSomething...
Let鈥檚 learn this new feature starting with a simple questionnaire that can offer answers to important questions that may come up as we dive into it. What is a Virtual Thread? Virtual threads are lightweight threads that are not tied to the OS or hard...
Introduced in Java 10 and enhanced in Java 11, local variable type inference allows developers to use the keyword var instead of explicit type declarations for local variables. So, the purpose of this feature is to reduce verbosity. For instance, rat...
Sealing a class or interface restricts the list of subclasses or implementations to a predefined set. For example, consider defining a Shape and restricting subclasses to be only triangles and squares. public class SealedClasses { sealed class Sh...
Java鈥檚 switch statement has come a long way. In earlier versions, it was verbose, error-prone, and limited in what you could do with it. But starting in Java 14 and finalized in Java 21, switch has evolved into a far more powerful and expressive tool...
