工厂方法

• Factory Method
• 简单工厂, 根据参数创建不同的类
• 静态工厂，单例工厂

  • public interface Sender{
        public void Send();
    }
    public class MySender implements Sender{
        @Override
        public void Send(){}
    }
    public SenderFactory {
        public static Sender produceStatic() {
            return new MySender();
        }
        public Sender produce(){
            return new MySender();
        }
        public Sender produce(int i){
            return new MySender();
        }
    }

• 工厂子类继承工厂接口, 不同产品对应不同工厂

  • public interface AbstractFactory {
        public MySender produce();
    }
    public class MyFactory implements AbstractFactory {
        @Override
        public MySender produce(){
            return new MySender();
        }
    }

• 抽象工厂