Tutorials under 'Java 21 Collections'

What Are Collections in Java? A Beginner-Friendly Overview

Learn what Java Collections are, how they work internally, and why they’re essential in real-world Java development. Includes syntax, use cases, and tips

HashMap InternalsJava SetList Vs SetJava StreamsJava ListJava CollectionsJava MapJava 21 CollectionsTreeMap Vs HashMapJava 8 Features

ArrayList vs LinkedList vs Vector – Which is Best?

Compare ArrayList, LinkedList, and Vector in Java. Learn their internals, performance, and use cases to choose the best list for your project.

Java Best PracticesCollection FrameworkThread SafetyArrayList Vs LinkedListFunctional JavaVector Vs ArrayListJava 8 StreamsJava CollectionsJava 21 CollectionsJava List Performance

How Hashing Works in HashMap – Step-by-Step Explanation with Diagrams and Code

Learn how hashing works in Java’s HashMap with step-by-step explanation, diagrams, memory model, performance details, and Java 8+ enhancements

HashMap InternalsCollision ResolutionHashMap ResizingRed Black TreesJava 8 StreamsJava Memory ModelJava CollectionsHashCode And EqualsJava 21 CollectionsJava Hashing