Collections in Java

Collections in Java are used to store and manage groups of objects dynamically. They provide interfaces and classes such as List, Set, Queue, and ArrayList, making it easy to add, remove, search, and manipulate data efficiently.

Without collections, If you want to store many values , you would need seperate variables.

Why Use Collections?

• Dynamic size
• Easy to add and remove elements
• Provides many built-in methods
• Makes data management easier

Without collections, If you want to store many values , you would need seperate variables.

The Java Collections Framework:

• Interfaces:Interfaces define the data structure.

• Implementations:implementation classes provide the actual functionality.

• Algorithms:algorithms perform operations such as sorting, searching, and reversing on collections.

Collections of Interfaces:

• Collection
• List
• Set
• Queue
• Deque
• Map