假设我有：
public class Honda implements ICar（）{} public class Opel implements ICar（）{} 公共班人员{ ICar car; 。 。 public Person（ICar c）{ car = c; code public class Person< T extends ICar> { T car; 。 。 public Person（T c）{ car = c; $ b $ p $ p $或$是否取决于执行的任务？编辑：所以泛型只适用于聚合关系（容器等）？编辑：这可能有所帮助：
p>Java泛型？
我想我问的是泛型只是用于集合？
解决方案人通常没有使用某种类型的汽车参数化。只有非常讨厌的人被他们的汽车所定义。人们也会改变车辆（及时）。所以我不会参数化类，如果只是为了语义。
在进入这样的编程细节之前，想想你想从现实世界中模拟出什么。
p>Getting into a little bit of confusion here when to use generics:
Say I have:
public class Honda implements ICar(){ } public class Opel implements ICar(){ }should I use:
public class Person{ ICar car; . . public Person (ICar c){ car = c; } }or
public class Person<T extends ICar>{ T car; . . public Person(T c){ car = c; } }or does it depend on the tasks performed?
EDIT: So is generics only for aggregation relationships (containers etc)?
EDIT: This may help:
Java Generics?
I think I am asking is generics just for use with collections?
解决方案A person is generally not parameterized with a type of car. Only very annoying persons are defined by their car. Persons change cars too (in time). So I would not parameterize the class, if only for the semantics.
Think about what you try to mimic from the real world, before going into such programming details.
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