Mapping class diagram to Java code - OOAD

// This is for mapping class diagram to java code (exam point of view le matra, dont expect much) // You can add constructors on every class too ig // Aawaz sunena vane ali thulo aawaz aauni device use // Aggregation ra Composition nabujhna sakxa, simply aggregation maa object instance create garnu ho , whereas Composition maa final use garerw just one instance create garni /* Aggregation */ public class Engine{...} public class Car{ private Engine e1; public Car(Engine e1){ this.e1 = e1; } } /* Composition */ public class Engine{...} public class Car{ private final Engine e1; public Car(){ e1 = new Engine(); } }