工厂方法模式

package com.godcin.test.factorymethod;

public interface Product {
    public void operation();
}

package com.godcin.test.factorymethod;

public class ProductA implements Product {

    @Override
    public void operation() {
        System.out.println("产品A可以提供服务A");

    }

}

package com.godcin.test.factorymethod;

public class ProductB implements Product {

    @Override
    public void operation() {
        System.out.println("产品B可以提供服务B");
    }

}

package com.godcin.test.factorymethod;

public interface Factory {
    public Product getProduct();

}

package com.godcin.test.factorymethod;

public class FactoryA implements Factory {

    @Override
    public Product getProduct() {
        // TODO Auto-generated method stub
        return new ProductA();
    }

}

package com.godcin.test.factorymethod;

public class FactoryB implements Factory {

    @Override
    public Product getProduct() {
        // TODO Auto-generated method stub
        return new ProductB();
    }

}

package com.godcin.test.factorymethod;

public class FactoryMethodTest {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Factory factoryA = new FactoryA();
        Product productA = factoryA.getProduct();
        productA.operation();// 输入结果|产品A可以提供服务A
        
        Factory factoryB = new FactoryB();
        Product productB = factoryB.getProduct();
        productB.operation();// 输入结果|产品B可以提供服务B
    }

}