Confirmed my understanding

In the earlier blog, the character not being displayed properly by the browser is the browser issue and the code to deal with supplementary character is correct. The link http://www.unicode.org/cgi-bin/GetUnihanData.pl?codepoint=10177 shows the character that will be displayed in browser(which is the one present in xml file when opened by browser). So, to work with supplementary characters, create new String by passing character[] containing the low and high surrogate pairs or the byte[] specifying the encoding. The byte[] can for any code point can be obtained using the link :
Byte for codepoint