Read big object data in java

/**
* Extract the content of the CLOB field from the database and convert it to a string
* @ Param rs database ResultSet, which contains CLOB Fields
* @ Param clobidx Index containing the clob field in the ResultSet
* @ Return refers to the extracted characters.
* @ Throws SQLException
*/
Public static StringBuffer getCLOBContent (ResultSet rs, int clobidx) throws SQLException
{
Log. debug ("start to get CLOB content, index =" + clobidx );
Oracle. SQL. CLOB clobField = (OracleResultSet) rs). getCLOB (clobidx );
Long clen = clobField. length ();
Char clobArray [] = new char [(int) clen];
Int readednum = clobField. getChars (1, (int) clen, clobArray );
StringBuffer sb = new StringBuffer ();
Sb. append (clobArray );
Log. debug ("read CLOB content is [" + sb. toString () + "]");
Return sb;
}