Java of AES Encryption
=======================
            Cipher encrypt = Cipher.getInstance("AES");
            encrypt.init(Cipher.ENCRYPT_MODE, key);
            byte[] encryptedData = encrypt.doFinal(data);

C# code using Rijndael(AES) 128 Bit encryption
==============================================

       ICryptoTransform transform = GetCryptoServiceProvider(SecretKey);

       //Set up the stream that will hold the encrypted data.
       MemoryStream memStreamEncryptedData = GetMemoryStream(transform, bytesData);

        /// <summary>
        /// Create ICryptoTransform object from Rijndael(AES) ECB/PKCS7
        /// </summary>
        /// <param name="bytesKey">Byte Array key</param>
        /// <returns>ICryptoTransform Object</returns>
        private ICryptoTransform GetCryptoServiceProvider(byte[] bytesKey)
        {
            Rijndael rijndael = new RijndaelManaged();
            try
            {
                rijndael.KeySize = 128;
                rijndael.BlockSize = 128;
                rijndael.Mode = CipherMode.ECB;
                rijndael.Padding = PaddingMode.PKCS7;
                // Test to see if a key was provided
                rijndael.GenerateIV();

                if (null != bytesKey)
                {
                    rijndael.Key = bytesKey;
                }
                else
                {
                    rijndael.GenerateKey();
                    SecretKey = rijndael.Key;
                }
            }
            catch (Exception Ex)
            {
                throw new Exception("Error while creating Rijndael(AEs) Object: \n" + Ex.Message);
            }

            return rijndael.CreateEncryptor();

        }