类的实例化问题!!求教

leafxf

父类A有三个子类A1,A2,A3。
在程序中要初始化A1,A2,A3的三个对象实例 a1,a2,a3；但初始化是动态的，如定义一个数组a[3]，用循环的方法初始化a[0],a[1],a[2];但a[0]对应A1,A2,A3需要根据参数随机制定，那么应该怎样说明数组a呀？

    是用A []a = new A[3];
    还是其他什么关键字呀？？请给指点一下！！谢谢

leonbao

try to dynamicly instance with reflect.
You'd better search some artikels about "reflect" in google.
Codes are some like following:

import java.lang.reflect.*;
...
String className = "A1";
Class class = Class.forName(className);
Constructor constructor = class.getConstructor();
Object[] initargs = ...
Object object = constructor.newInstance(initargs);
...

Viel Spass ^_^