如何在代码中实现聚合和关联？

Question

代码中的聚合和关联是什么样的？（Java 或 C#）
我找不到聚合和关联的代码示例。

Answer 1

关联示例：员工有地址

public class Employee  
{         
   public Address address; //Employee HAS-A Address  
}

聚合示例：员工有多个地址

public class Employee  
{         
  public List<Address> address; //Employee HAS-Many Address  
}

见：C# code for association, aggregation, composition