Create a StringReader for the string containing unicode escape sequences and then use the read() method to read it in. I think that will convert them to their real characters. If not try this code:

Code:
/**
 * Convert a string so any unicode escaped character sequences are converted
 * back to their UTF-16 character codes
 *
* @param text           - the text to convert
 * @return the converted text
 */
public static String fromUnicode(String text)
    {
    if ( text == null )
        return null;

    char[] in = text.toCharArray();
    char[] out = new char[in.length];
    char aChar;
    int outLen = 0;
    int off = 0;
    int end = in.length;

    while ( off < end )
        {
        aChar = in[off++];

        if ( aChar == '\\' )
            {
            // handle escaped characters
            aChar = in[off++];

            if ( aChar == 'u' )
                {
                // handle unicode
                // Read the xxxx
                int value = 0;

                for ( int i = 0; i < 4; i++ )
                    {
                    aChar = in[off++];

                    switch ( aChar )
                        {
                        case '0':
                        case '1':
                        case '2':
                        case '3':
                        case '4':
                        case '5':
                        case '6':
                        case '7':
                        case '8':
                        case '9':
                            value = (value << 4) + aChar - '0';
                            break;
                        case 'a':
                        case 'b':
                        case 'c':
                        case 'd':
                        case 'e':
                        case 'f':
                            value = (value << 4) + 10 + aChar - 'a';
                            break;
                        case 'A':
                        case 'B':
                        case 'C':
                        case 'D':
                        case 'E':
                        case 'F':
                            value = (value << 4) + 10 + aChar - 'A';
                            break;
                        default:
                            throw new IllegalArgumentException(
                                    "Malformed \\uxxxx encoding.");
                        }
                    }

                out[outLen++] = (char)value;
                }
            else
                {
                // handle other escaped chars
                if ( aChar == 't' )
                    aChar = '\t';
                else if ( aChar == 'r' )
                    aChar = '\r';
                else if ( aChar == 'n' )
                    aChar = '\n';
                else if ( aChar == 'f' )
                    aChar = '\f';
                else if ( aChar == '\\' )
                    aChar = '\\';
                else if ( aChar == 'b' )
                    aChar = '\b';
                else if ( aChar == '"' )
                    aChar = '"';

                out[outLen++] = aChar;
                }
            }
        else
            {
            // handle non escaped characters
            out[outLen++] = aChar;
            }
        }

    return new String(out, 0, outLen);
    }