将c#算法转为java的算法，谢谢

[youbin_]

以下是c#中的算法，由于本人对c#不了解，希望有人帮我把下面的算法转为java中的算法：

//组包函数，前面加长度，后面加校验码
/// <summary>
/// 组包函数，前面加长度，后面加校验码
/// </summary>
/// <param name="bufSend">传入的指令及</param>
/// <returns>返回组包</returns>
private byte[] PackSendPage(byte[] bufSend)
{
	string strLen=bufSend.Length.ToString("000");
	byte[] bufTmp=new byte[bufSend.Length ];
	byte[] bufPack=new byte[bufSend.Length+5];
	byte CheckMac=0;
	byte[] bufLen=Encoding.ASCII.GetBytes(strLen);
	Array.Copy(bufLen,0,bufPack,0,3);

	CheckMac=Convert.ToByte(CheckMac ^ (bufPack[0]));
	CheckMac=Convert.ToByte(CheckMac ^ (bufPack[1]));
	CheckMac=Convert.ToByte(CheckMac ^ (bufPack[2]));
	for(int i=0; i<bufSend.Length; i++)
		CheckMac=Convert.ToByte(CheckMac ^ bufSend[i]);
	Array.Copy(bufSend,0,bufPack,3,bufSend.Length);
	byte[] buf1=new byte[1];
	buf1[0]=CheckMac;
	byte[] buf2=AsciiBcd.dat_bcdtoasc(buf1,buf1.Length);
	Array.Copy(buf2,0,bufPack,3+bufSend.Length,buf2.Length);
	return bufPack;
}