Java Collections

🧑‍🏫 Java Collections – Detailed Overview

The Java Collections Framework (JCF) is an essential topic for any aspiring Java developer. This class provides an in-depth understanding of the data structures available in Java to store, access, and manage data efficiently. Students will begin with the fundamental interfaces—List, Set, Queue, and Map—and then dive into key implementations such as ArrayList, LinkedList, HashSet, TreeSet, HashMap, and TreeMap. We’ll explain the internal working of these classes, their performance trade-offs, and use cases. Concepts like Generics, Iterator, fail-fast vs fail-safe, synchronization, and ConcurrentHashMap will also be covered. To prepare for interviews, we’ll compare Comparator and Comparable and explore sorting mechanisms using collections. Real-world scenarios such as user data handling, logging systems, and caching will be discussed to show practical usage.

Who is this class for?

Students familiar with Java syntax and OOPs concepts.

What do students need?

Laptop with Java + IDE; basic coding knowledge.