坦克大战 中介者模式 java简单实现

需求：坦克大战

创建两种坦克

坦克类型	射程	速度
b70	70米	时/70公里
b50	50米	时/70公里

本实例需求：

两个坦克互相通讯，通过一个中间件完成。

通过的这个中间件就是中介者。

类图

代码

import java.util.HashMap;

interface IColleague{
	void receive(String from,String mesage);
	void send(String to,String mesage);
}
interface IMediator{
	void register(String name,IColleague colleage);
	void send(String from,String to,String mesage);
} 
abstract class Tank implements IColleague{
	String mName;
	IMediator mMediator;
	public Tank(String name,IMediator m) {
		mName = name;
		mMediator = m;
		mMediator.register(name, this);
	}
	public void send(String to,String mesage) {
		mMediator.send(mName, to, mesage);
	}
	public void receive(String from,String mesage) {
		System.out.println("from:"+from+" to:"+mName+" msg:"+mesage);
	}
}

class Mediator implements IMediator{
	HashMap<String,IColleague> mMaps = new HashMap<String,IColleague>();
	public void register(String name,IColleague colleage) {
		mMaps.put(name, colleage);
	}
	public void send(String from,String to,String mesage) {
		IColleague collegue = mMaps.get(to);
		collegue.receive(from, mesage);
	}
}

class B70Tank extends Tank{
	public B70Tank(IMediator m) {
		super("B7",m);
	}
}
class B50Tank extends Tank{
	public B50Tank(IMediator m) {
		super("B5",m);
	}
}
public class Client {
	public static void main(String[] args) {
		System.out.println("hello worldff !");
		IMediator mediator = new Mediator();
		B70Tank b70 = new B70Tank(mediator);
		B50Tank b50 = new B50Tank(mediator);
		b70.send("B5", "hello");
		b50.send("B7", "and you");
	}
}

运行结果