Decorator和Factory设计模式的混搭

今天学了Decorator设计模式，但是main函数内太过复杂，突然想到了前几天学的Factory设计模式，因此尝试组合在一起看看效果如何。在Factory –条件语句if里面有一些重复代码，请问怎么处理。请多指教。

interface Product{    public void productName();}class TV implements Product{    public void productName(){        System.out.println("cctv-5 NBA");    }}class Washer implements Product{    public void productName(){        System.out.println("wash cloth....");    }}class TCL implements Product{    private Product product;    public TCL(Product product){        this.product = product;    }    public void productName(){        product.productName();        System.out.println("****produced by TCL corporation*****");    }}class Factory{    public static Product getInstance(String company,String product){        if(company.equals("TCL") && product.equals("TV")){            Product tv = new TV();            TCL tclProduct = new TCL(tv);            tclProduct.productName();            return tclProduct;        }else if(company.equals("TCL") && product.equals("Washer")){            Product washer = new Washer();            TCL tclProduct = new TCL(washer);            tclProduct.productName();            return tclProduct;        }else{            return null;        }    }}public class TestDemo{    public static void main(String args[]){        Factory pd = new Factory();        pd.getInstance("TCL","TV");        pd.getInstance("TCL","Washer");    }}/*Outputcctv-5 NBA****produced by TCL corporation*****wash cloth....****produced by TCL corporation******/