Java 抽象工厂模式 Abstract Factory

类图如下：

工厂方法模式 Factory Method

代码示例如下：

public class AbstractFactory {

    public static void main(String[] args) {
        SenderFactory senderFactory = new MailSenderFactory();

        Sender sender = senderFactory.produce();
        sender.send();
    }
}

interface Sender {
    public void send();
}

class MailSender implements Sender {
    public void send() {
        System.out.println("Send by mail");
    }
}

class SmsSender implements Sender {
    public void send() {
        System.out.println("Send by sms");
    }
}

interface SenderFactory {
    Sender produce();
}

class MailSenderFactory implements SenderFactory {
    public Sender produce() {
        return new MailSender();
    }
}

class SmsSenderFactory implements SenderFactory {
    public Sender produce() {
        return new SmsSender();
    }
}