Aggregation in Java is a relationship between two classes that is best described as a “has-a” and “whole/part” relationship . It is a more specialized version of the association relationship. The aggregate class contains a reference to another class and is said to have ownership of that class.
Read moreWhat is association with example?
An association is a “using” relationship between two or more objects in which the objects have their own lifetime and there is no owner . As an example, imagine the relationship between a doctor and a patient. A doctor can be associated with multiple patients.19 Kas 2018
Read moreWhat is association with example?
An association is a “using” relationship between two or more objects in which the objects have their own lifetime and there is no owner . As an example, imagine the relationship between a doctor and a patient. A doctor can be associated with multiple patients.19 Kas 2018
Read moreWhat is inheritance How is it different from aggregation in Java?
The difference is typically expressed as the difference between “is a” and “has a”. Inheritance, the “is a” relationship , is summed up nicely in the Liskov Substitution Principle. Aggregation, the “has a” relationship, is just that – it shows that the aggregating object has one of the aggregated objects.6 Kas 2008
Read moreWhat is inheritance How is it different from aggregation in Java?
The difference is typically expressed as the difference between “is a” and “has a”. Inheritance, the “is a” relationship , is summed up nicely in the Liskov Substitution Principle. Aggregation, the “has a” relationship, is just that – it shows that the aggregating object has one of the aggregated objects.6 Kas 2008
Read moreWhat is aggregation association and composition?
Aggregation is a weak Association. Composition is a strong Association. Aggregation means one object is the owner of another object . Composition means one object is contained in another object. The direction of a relation is a requirement in both Composition and Aggregation.12 Oca 2022
Read moreWhat is aggregation association and composition?
Aggregation is a weak Association. Composition is a strong Association. Aggregation means one object is the owner of another object . Composition means one object is contained in another object. The direction of a relation is a requirement in both Composition and Aggregation.12 Oca 2022
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