Collections Set — Uniqueness, Hashing, and Ordering скачать в хорошем качестве

Collections Set — Uniqueness, Hashing, and Ordering

In this video we introduce the *Set interface* in the Java Collections Framework and finally answer the question: why does Java even need Sets if we already have Lists? You’ll learn how Sets enforce **uniqueness**, how Java determines duplicates using `equals()` and `hashCode()`, and why Sets are critical in real applications like login systems, caching, permissions, and graph traversal. We compare *HashSet vs LinkedHashSet vs TreeSet* and clearly show when to use each: • HashSet → fastest • LinkedHashSet → preserves insertion order • TreeSet → automatically sorted The lesson also includes a live Eclipse demo showing duplicates being rejected and automatic sorting happening in real time. Perfect for beginner and intermediate Java developers, CS students, and interview prep. #Java #JavaCollections #Set #HashSet #TreeSet #LinkedHashSet #DataStructures #OOP #Programming #LearnJava #SoftwareEngineering #CodingInterview #TechInterview #ComputerScience #JavaDeveloper #Algorithms #STEM #Developers