工厂模式例子（二）

抽象出产品

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?具体的产品BUS
public class BuilderTest {public static void main(String[] a){//创造不同的BuilderBuilder builder1 = new CarBuilder();Builder builder2 = new BusBuilder();Builder builder3 = new TruckBuilder();//Director使用不同的Builder，最终得到不同的产品Director director = new Director(builder3);director.construct();AbstractProduct product = builder3.getProduct();product.print();}}
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