利用反射機制構造一個類對象

public Object newInstance(String ClassName, Object[] args) throws Exception
{
Class newone = Class.forName(ClassName);
Class[] argsClass = new Class[args.length];
for (int i = 0; i < args.length; i++)
{
argsClass[i] = args[i].getClass();
}
Constructor cons = newone.getConstructor(argsClass);
return cons.newInstance(args);
}