本文介绍了一种常用的设计模式——命令模式，并通过一个简单的Java实现示例来展示其工作原理。命令模式将请求封装为对象，从而让参数化操作、延迟执行及将请求放入队列成为可能。文章中定义了一个Command接口，以及实现该接口的具体命令类MyCommand，还有接收者类Receiver和调用者类Invoker。
public interface Command{
public void exe();
}
public class MyCommand implements Command(){
private Receiver receiver;
public MyCommand(Receiver receiver){
this.receiver = receiver;
}
@Override
public void exe(){
receiver.action();
}
}
public class Receiver{
public void action(){
System.out.println("Command Received!");
}
}
public class Invoker{
private Command command;
public Invoker(Command command){
this.command = command;
}
public void action(){
command.exe();
}
}
public class Test{
public static void main(String args[]){
Receiver receiver = new Receiver();
Command command = new Command(receiver);
Invoker invoker = new Invoker(command);
invoker.action();
}
}
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