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CommandClient.java
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33 lines (25 loc) · 733 Bytes
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package designpattern.command;
import java.util.ArrayList;
import java.util.List;
/**
* 创建一个具体命令对象并设定它的接收者
*
* 将请求封装成一个对象,使得可以用不同的请求来参数化其他对象,同时也支持撤销操作。
*
* @author liu yuning
*
*/
public class CommandClient {
public static void main(String[] args) {
List<Reciever> recievers = new ArrayList<Reciever>();
recievers.add(new RecieverA());
recievers.add(new RecieverB());
recievers.add(new RecieverC());
Command command = new ConcreteCommand(recievers);
Invoker invoker = new Invoker();
recievers.remove(0);
invoker.setCommand(command);
invoker.executeCommand();
command.execute();
}
}