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#java #javatutorial #javacourse public class Main { public static void main(String[] args) { // Composition = Represents a "part-of" relationship between objects. // For example, an Engine is "part of" a Car. // Allows complex objects to be constructed from smaller objects. Car car = new Car("Corvette", 2025, "V8"); System.out.println(car.model); System.out.println(car.year); System.out.println(car.engine.type); car.start(); } } public class Car { String model; int year; Engine engine; Car(String model, int year, String engineType){ this.model = model; this.year = year; this.engine = new Engine(engineType); } void start(){ this.engine.start(); System.out.println("The " + this.model + " is running"); } } public class Engine { String type; Engine(String type){ this.type = type; } void start(){ System.out.println("You start the " + this.type + " engine"); } }

Published 2024-12-05 · Watch on YouTube ↗
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