"Has a" relation between Objects as in memory (RAM)

× "Is a" and "Has a" relation "Has a" relation Arrays as in memory Two Dimensional Arrays Exception Handling Variable, Object & Reference Multi-threading Website Design / Development Story of JEE modules
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Author: Bharat Chhajer


There are two kinds of relations in Java between classes. Is a and Has a. In other words, Inheritance and Association. Following diagram depicts "Has a" relation between Objects of Person class and Address class. So, person "has a" address.

Diagram showing Has a relation between classes / objects in Java.

Author: Bharat Chhajer