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public class Car { String model; // Parameterized Constructor public Car(String modelName) { model = modelName; } } Use code with caution. Copied to clipboard 6. Encapsulation and Access Modifiers

A is a special type of method used to initialize objects. It is called automatically when an object is created. Rules: It must have the same name as the class. It does not have an explicit return type (not even void ). Types: Default Constructor: Provided by Java if none is defined. public class Car { String model; // Parameterized

Includes a return type, name, parameters (optional), and a body. It is called automatically when an object is created

An is a basic unit of Object-Oriented Programming and represents a real-life entity. When a class is defined, no memory is allocated until an object of that class is created. Instantiation: Objects are created using the new keyword. Types: Default Constructor: Provided by Java if none

Car myCar = new Car(); // 'myCar' is an object of type Car myCar.color = "Red"; Use code with caution. Copied to clipboard 4. Methods: Defining Behavior

This paper provides a foundational overview of Object-Oriented Programming (OOP) in Java, focusing on the core building blocks: Foundations of Object-Oriented Programming in Java 1. Introduction

Classes and objects form the heart of Java. Classes provide the structure, while objects provide the realization of that structure. Methods define how these objects interact, and constructors ensure they start their lifecycle in a valid state. Master these four pillars, and you have the foundation to explore more complex topics like inheritance and polymorphism.