设计模式之抽象工厂模式

普通工厂模式下比较重度依赖工厂类，如果想拓展功能则必须对工厂类进行修改，则抽象工厂应运而生，该模式下新建多个工厂类，这样一旦增加功能则只需要增加新的工厂类就ok了，代码如下

package com.demo.stragetry;

import org.apache.hadoop.classification.InterfaceAudience.Public;

import com.sun.corba.se.spi.orb.OperationFactory;
import com.weibo.stragetry.multifacory.Sender;

public class FactoryTest {
    static interface Operation{
        public void calculate();
    }
    public interface Provider{
        public Operation produce();
    }

    public static class AddOperation implements Operation{

        @Override
        public void calculate() {
            // TODO Auto-generated method stub
            System.out.println("add operation");
        }

    }
    public static class SubOperation implements Operation{

        @Override
        public void calculate() {
            // TODO Auto-generated method stub
            System.out.println("sub operation");
        }

    }
    public static class MulOperation implements Operation{

        @Override
        public void calculate() {
            // TODO Auto-generated method stub
            System.out.println("mul operation");
        }

    }
    public static class DivOperation implements Operation{

        @Override
        public void calculate() {
            // TODO Auto-generated method stub
            System.out.println("div operation");
        }

    }
    public static class FaltOperation implements Operation{

        @Override
        public void calculate() {
            // TODO Auto-generated method stub
            System.out.println("Falt operation");
        }

    }
    public static class AddFactory implements Provider{

        @Override
        public Operation produce() {
            // TODO Auto-generated method stub
            return new AddOperation();
        }

    }
    public static class SubFactory implements Provider{

        @Override
        public Operation produce() {
            // TODO Auto-generated method stub
            return new SubOperation();
        }

    }
    public static class MulFactory implements Provider{

        @Override
        public Operation produce() {
            // TODO Auto-generated method stub
            return new MulOperation();
        }

    }

    public static class DivFactory implements Provider{

        @Override
        public Operation produce() {
            // TODO Auto-generated method stub
            return new DivOperation();
        }

    }
    public static void main(String[] args) {
        Provider provider = new AddFactory();
        Operation operation = provider.produce();
        operation.calculate();

    }
}