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Learn the key differences between Association, Aggregation, and Composition in OOP. Understand real-world relationships with Java examples, diagrams, analogies, and interview tips to master object relationships in class design.

Understand cohesion, coupling, and delegation in OOP with real-world examples, Java code, design principles, and interview prep. Learn how to build high-quality, maintainable, and loosely coupled object-oriented systems.

Master generalization and specialization in OOP with definitions, real-world examples, Java code, differences, and interview prep. Learn how to model shared and specific behavior using class hierarchies in object-oriented design.

Learn Abstraction in OOP and Java with real-world examples, abstract classes vs interfaces, detailed code, analogy, and interview insights. Understand how abstraction hides implementation and focuses on essential behavior.

Learn everything about Encapsulation in OOP — from definition and types to real-world analogies, examples, and interview questions. Deep dive with code, comparison tables, and advanced insights.