高分求将C# 3DES加密翻译成Java,该如何处理

public string Encrypt(string strTobeEnCrypted, string strKEY, string strIV)        {            if (strTobeEnCrypted == "") return "";            try            {                byte[] pKEY = HexStringToByteArray(strKEY);                byte[] pIV = HexStringToByteArray(strIV);                byte[] Encrypted;                if (Encrypt(pKEY, pIV, ConvertStringToByteArray(strTobeEnCrypted), out Encrypted))                {                    return ToBase64String(Encrypted);                }                else                {                    return "";                }            }            catch            { }            return "";        }public byte[] HexStringToByteArray(string s)        {            Byte[] buf = new byte[s.Length / 2];            for (int i = 0; i < buf.Length; i++)            {                buf[i] = (byte)(chr2hex(s.Substring(i * 2, 1)) * 0x10 + chr2hex(s.Substring(i * 2 + 1, 1)));            }            return buf;        }  private bool Encrypt(byte[] KEY, byte[] IV, byte[] TobeEncrypted, out  byte[] Encrypted)        {            Encrypted = null;            try            {                byte[] tmpiv ={ 0, 1, 2, 3, 4, 5, 6, 7 };                for (int ii = 0; ii < 8; ii++)                {                    tmpiv[ii] = IV[ii];                }                byte[] tmpkey ={ 0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7 };                for (int ii = 0; ii < 24; ii++)                {                    tmpkey[ii] = KEY[ii];                }private System.Security.Cryptography.TripleDESCryptoServiceProvider des;ICryptoTransform tridesencrypt = des.CreateEncryptor(tmpkey, tmpiv);Encrypted = tridesencrypt.TransformFinalBlock(TobeEncrypted, 0, TobeEncrypted.Length);                des.Clear();            }            catch (Exception e)            {                return false;            }            return true;        }