Java Collections Framework Overview

Welcome to the Java Collections Framework documentation! 🧩 This guide will help you understand the core interfaces and classes that form the backbone of data structures in Java. Let's dive in!

Key Components of the Collections Framework

The framework provides a unified architecture for storing and manipulating collections, including:

1. Interfaces

• List 📋: Ordered collection (e.g., ArrayList, LinkedList)
• Set 🧾: Unordered, unique elements (e.g., HashSet, TreeSet)
• Map 🗺️: Key-value pairs (e.g., HashMap, TreeMap)
• Queue 📦: FIFO structure (e.g., PriorityQueue, LinkedList)
• Deque ⬆️: Double-ended queue (e.g., ArrayDeque)

2. Implementations

• ArrayList 📌: Dynamic array with fast random access
• LinkedList ⚙️: Doubly-linked list for efficient insertion/deletion
• HashMap 🔐: Hash table-based map with fast lookup
• TreeSet 🌳: Sorted set using a red-black tree
• ArrayDeque 📈: Array-based deque with O(1) operations

How to Use Collections

1. Choose the right interface based on your needs (e.g., List for ordered data).
2. Use implementation classes that match your performance requirements.
3. Leverage methods like add(), remove(), contains() for manipulation.

📚 Expand Your Knowledge

For a deeper dive into Java collections, check out our Java Collections Tutorial for practical examples and code snippets!