Tutorials under 'Java 21 Collections'

HashMap in Java – Internal Working and Hashing Explained

Master Java’s HashMap – Learn internal working, hashing, performance, memory model, and modern best practices for high-performance Java development.

HashMap InternalsJava 21 CollectionsJava Data StructuresJava 8 StreamsJava CollectionsJava MapHashMap PerformanceJava HashingEquals And HashCodeTreeMap Vs HashMap

EnumMap and WeakHashMap in Java – Specialized Map Variants for Performance and Memory Efficiency

Learn Java’s specialized maps – EnumMap and WeakHashMap. Explore their structure, use cases, performance, memory model, and real-world applications

EnumMap JavaJava 21 CollectionsFunctional Programming JavaEnumMap PerformanceWeakHashMap JavaJava CollectionsSpecialized MapHashMap Vs WeakHashMapJava Memory ManagementJava Enums

Java Collection Internals – Deep Dive into Memory, Resizing, and Performance Optimization

Dive deep into Java Collection internals—learn how memory, resizing, and performance affect List, Set, and Map structures with Java 8–21 optimizations

HashMap InternalsBig O In JavaJava 21 CollectionsArrayList ResizingJava PerformanceCollections ResizingJava 8 StreamsJava Memory ModelJava GC TuningJava Collections

Java Collections and Big-O Time Complexity – Performance Guide for Every Data Structure

Learn how Java Collections perform under the hood. Explore Big-O complexities for List, Set, Map, and Queue with real-world guidance and Java 8–21 updates.

Java Performance TuningJava 21 CollectionsJava Data StructuresJava List Vs SetArrayList Vs LinkedListCollection FrameworkTime Complexity JavaBig O ComplexityJava CollectionsHashMap Performance