备忘，记个C#版本。

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace CS_Test{    public class BaseBullet    {        public float x;        public float y;        public int color;        public string name;        public BaseBullet(string name, int color)        {            this.name = name;            this.color = color;        }        public virtual void say(string str)        {            Console.WriteLine(str);            Console.WriteLine("Name is " + name);            Console.WriteLine("Color is " + color);        }    }    public class BulletType1 : BaseBullet    {        public BulletType1(string name, int color) : base(name, color)        {        }        public override void say(string str)        {            base.say(str);            Console.WriteLine("shoot from BulletType1");        }    }    public class BulletType2 : BaseBullet    {        public BulletType2(string name, int color) : base(name, color)        {        }        public override void say(string str)        {            base.say(str);            Console.WriteLine("shoot from BulletType2");        }    }    class Program    {        static void Main(string[] args)        {            int id = 1;            string className = "CS_Test.BulletType" + id.ToString();            System.Type t = System.Type.GetType(className);            BaseBullet b1 = Activator.CreateInstance(t, "John", 1) as BaseBullet;            b1.say("Hello");            ++id;            className = "CS_Test.BulletType" + id.ToString();            t = System.Type.GetType(className);            BaseBullet b2 = Activator.CreateInstance(t, "Sam", 2) as BaseBullet;            b2.say("Goodbye");        }    }}