详解Java设计模式编程中命令模式的项目结构实现

public interface ICommand { 
  void execute(); 
} 

public class ConcreteCommand implements ICommand { 
  private Receiver receiver; 
 
  public ConcreteCommand(Receiver receiver) { 
    this.receiver = receiver; 
  } 
 
  @Override 
  public void execute() { 
    this.receiver.action(); 
  } 
 
} 

public class Receiver { 
  public void action() { 
    System.out.println("receiver do something"); 
  } 
} 

public class Invoker { 
  private ICommand command; 
   
  public Invoker(ICommand command) { 
    this.command = command; 
  } 
   
  public void invoke() { 
    this.command.execute(); 
  } 
} 

public class Test { 
  public static void main(String[] args) { 
    Receiver receiver = new Receiver();//真正的执行者 
    ICommand command = new ConcreteCommand(receiver);//用于的隔离的命令 
    Invoker invoker = new Invoker(command );//调用者 
    invoker.invoke(); 
  } 
}