命令模式14（18）

顾客（命令发送者）通过服务员（具体命令）来通知厨师（命令接收者）做出食物

 

package behavioral.command;

public class Customer {

    Command command;
    
    public Customer(Command command){
        this.command = command;
    }
    
    public void eatCommand2Waiter(){
        System.out.println("Customer：服务员，我要吃大盘鸡");
        String food = command.excute();
        System.out.println(food);
        System.out.println("Customer：开始吃了");
    }
}

 

 

package behavioral.command;

public interface Command {

    public String excute();
}

package behavioral.command;

public class Waiter implements Command{

    private Cook cook;
    
    Waiter(){
        cook = new Cook();
    }
    
    @Override
    public String excute() {
        System.out.println("Waiter:顾客点餐了，开始做吧");
        String food = cook.mark();
        System.out.println(food);
        return "Waiter:客人，您的菜好了";
    }

}

 

package behavioral.command;

public class Cook {

    public String mark() {
        System.out.println("Cook:我开始做了");
        return "Cook:食物好了，上菜吧";
    }

}

 

 

package behavioral.command;

public class CookMain {

    public static void main(String[] args) {
        Command waiter = new Waiter();
        Customer c = new Customer(waiter);
        c.eatCommand2Waiter();
    }

}