3⃣ Aggregation
The relationship between the whole and part, and the whole and part can be separated.
Aggregate relations also represent the relationship between the whole and part of the class, member objects are part of the overall object, but the member object can exist independently from the overall object.
For example, bus drivers and work clothes and hats are part of the overall relationship, but they can be separated. Work clothes and hats can be worn on other drivers. Bus drivers can also wear other work clothes and hats.

بمعنى أن كل اوبجيكت مستقل عن الاخر فقط يتم الاستفاده من اوبجيكت معين في لفتره محدوده وذا انتهى الاوبجيكت الاول يبقى الثاني كما هو ولا يتأثر اي ان هذه العلاقة عكس ال composition تماما


#classes_relationship
#Java_Level_2
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