定义类的思路
要求在Factory类中仅根据类名来创建具体类。所以重点在于Factory类的构造
代码实现
1 interface Product{ 2 public void useIt(); 3 } 4 class screwDriver implements Product{ 5 @Override 6 public void useIt() { 7 System.out.println("用螺丝刀"); 8 } 9 } 10 class nail implements Product{ 11 @Override 12 public void useIt() { 13 System.out.println("用钉子"); 14 } 15 } 16 class Factory{ 17 public Product getProduct(String fFame){ 18 Product p=null; 19 try { 20 p=(Product)(Class.forName(fFame).newInstance()); 21 }catch (Exception e){} 22 return p; 23 } 24 } 25 26 public class test { 27 public static void main(String args[]){ 28 Factory f=new Factory(); 29 Product p=f.getProduct("nail"); 30 p.useIt(); 31 } 32 } 33 //运行结果:用钉子