浅谈JAVA设计模式之——命令模式(Command)

package com.lyz.design.command;
/**
 * Command 
 * @author binghe
 *
 */
public abstract class Command {
    protected Receiver receiver;
    public Command(Receiver receiver) {
        this.receiver = receiver;
    }
    public abstract void execute();
}

package com.lyz.design.command;
/**
 * ConcreteCommand 
 * @author binghe
 *
 */
public class CommandImpl extends Command {
    public CommandImpl(Receiver receiver) {
        super(receiver);
    }
    public void execute() {
        receiver.request();
    }
}

package com.lyz.design.command;
/**
 * Invoker 
 * @author binghe
 *
 */
public class Invoker {
    private Command command;
    public void setCommand(Command command) {
        this.command = command;
    }
    public void execute() {
        command.execute();
    }
}

package com.lyz.design.command;
/**
 * Receiver 
 * @author binghe
 *
 */
public class Receiver {
    public void receive() {
        System.out.println("This is Receive class!");
    }
}

package com.lyz.design.command;
/**
 * Test
 * @author binghe
 *
 */
public class Test {
    public static void main(String[] args) {
        Receiver rec = new Receiver();
        Command cmd = new CommandImpl(rec);
        Invoker i = new Invoker();
        i.setCommand(cmd);
        i.execute();
    }
}