ConcreteCommand2.java

package com.cheng.zenofdesignpatterns.patterns.command.common;

/**
 * 具体命令类
 */
public class ConcreteCommand2 extends Command {

	// 声明自己的默认接收者
	public ConcreteCommand2(){
		super(new ConcreteReciver2());
	}

	// 设置新的接收者
	public ConcreteCommand2(Receiver _receiver){
		super(_receiver);
	}

	// 每个具体的命令都必须实现一个命令
	public void execute() {
		// 业务处理
		this.receiver.doSomething();
	}

}