How to model multiple inheritance objects in Java

Question

I have the following problem in a small soccer manager game that I am writing. I have classes Person, Player, Coach, Manager. Man is the base class of others. The problem is that the player may also be a coach and / or manager. By adding more roles (e.g. apprentice), I am becoming more and more complex - so how can you effectively implement this? Is there no template for this?

Answer 1

Do not model the role as a type of person. A person must have a set of roles

public enum Role {
  PLAYER,
  COACH,
  REF 
}

public class Player {
  private final String name;
  private Collection<Role> roles = new ArrayList<Role>();

  public Player(String name) {
    this.name = name;
  }

  public void addRole(Role role) {
    this.roles.add(role);
  }
 }

Answer 2

Role, Person . (AbstractRole .)

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Answer 3

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Role -s Person.

A :

• Coach
• .

Answer 4

enum Role {
   Player, Coach, Manager, GroundsKeeper
}

class Person {
   final Set<Role> roles = EnumSet.noneOf(Role.class);
}

, .