Java Collections Framework (Extended Theory)

Java Collections Framework provides a powerful and flexible way to manage groups of objects.

What Are Collections?

In Java, Collections are interfaces and classes that enable efficient storage, retrieval, and manipulation of groups of objects.

The Java Collection Hierarchy

The Java Collection Hierarchy organizes data structures, providing a structured way to manage collections of objects derived from interfaces like Collection and Map.

Common Interfaces And Their Uses

This section covers the essential interfaces in the Java Collections Framework, including List, Set, and Map, detailing their characteristics and uses.

Important Implementations

The section discusses important implementations of Java's collection framework, focusing on ArrayList, LinkedList, HashSet, and HashMap, detailing their features and use cases.

Iterating Through Collections

This section explains various methods of iterating through collections in Java, focusing on the 'for-each' loop and the 'Iterator' interface.

Collections Utility Class

The Collections Utility Class in Java provides static methods for manipulating collections.

When To Use What?

This section provides guidance on selecting the appropriate Java Collections based on specific scenarios.

Real-World Examples

This section highlights practical applications of Java collections, showcasing real-world scenarios where they can be effectively utilized.

Quick Review Questions

This section consists of quick review questions to reinforce understanding of Java collections.