建造模式将一个产品的内部表象与产品的生成过程分割开来，从而使一个建造过程可以生成具有不同内部表象的产品对象。
public class Director {
public void construct(){
Builder builder1 = new ConcreteBuilder1();
builder1.buildPart1();
builder1.buildPart2();
builder1.retrieveProduct();
}
}
public interface Builder {
public abstract Object buildPart1();
public abstract Object buildPart2();
public abstract Product retrieveProduct();
}
public class ConcreteBuilder1 implements Builder {
private Object part1,part2;
@Override
public Object buildPart1() {
part1 = new Object();
return part1;
}
@Override
public Object buildPart2() {
part2 = new Object();
return part2;
}
@Override
public Product retrieveProduct() {
Product1 p = new Product1();
return p;
}
}
public interface Product {
public abstract void function();
}
public class Product1 implements Product {
@Override
public void function() {
}
}
原文：http://www.cnblogs.com/lnlvinso/p/3807115.html