📅 My Learning Journey

Feature / Use Case ↓ .map() ↓ .flatMap() Purpose ↓ Transforms each element into  exactly one  new element ↓ Transforms each element into  zero, one, or many ...

Java’s  Function<T, R>  interface with  practical use cases . What is  Function<T, R> ? Part of  java.util.function  (Java 8+) Represents ...

-> Operator in Java The -> operator in Java is used to define lambda expressions It separates the parameters (on the left) from the body (on the right) of the lambda expression. Lambda e...

Alright 🚀 — here’s your Java Optional “Refactor Map” in a one-page visual-style table so you can instantly see how to replace common null patterns with Optional equivalents. Java Option...

This will show you how to replace old  null  checks with  Optional  in  real-world code  for cleaner, safer, and more functional-style Java. 1. Before: Trad...