User.java

package u025;

/**
 * Abstract Colleague
 * Created by HuGuodong on 12/8/19.
 */
public abstract class User {
 protected String id;
 protected String name;
 protected IChatRoom mediator;

 public User(IChatRoom mediator, String id, String name){
 this.mediator = mediator;
 this.id = id;
 this.name = name;
 }

 public abstract void send(String msg, String toUserId);

 public abstract void receive(String msg);

 public String getId() {
 return id;
 }

 public String getName() {
 return name;
 }

 public IChatRoom getMediator() {
 return mediator;
 }
}