14 Fundamental OOP Concept to Learn in Java

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  1. Class: A blueprint that defines the structure and behavior of objects.

  2. Object: An instance of a class.

  3. Encapsulation: The process of hiding the implementation details of an object and exposing only the necessary information.

  4. Inheritance: The ability of a class to inherit properties and methods from a parent class.

  5. Polymorphism: The ability of a class to take on multiple forms or have multiple behaviors.

  6. Abstraction: The process of simplifying complex systems by breaking them down into smaller, more manageable parts.

  7. Interface: A collection of abstract methods that defines a contract for the behavior of a class.

  8. Method overloading: The ability to define multiple methods with the same name but different parameters in a class.

  9. Method overriding: The ability to provide a specific implementation of a method that is already provided by a parent class in a subclass.

  10. Composition: The process of building complex objects by combining simpler objects or components.

  11. Association: A relationship between two classes where one class has a reference to an instance of another class.

  12. Aggregation: A specialized form of association where one class owns or contains another class, but the contained class can exist independently of the owner.

  13. Dependency: A relationship between two classes where one class depends on another class to perform a specific task.

  14. Polymorphic references: The ability to refer to an object using a reference of its parent class or interface type.

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