SimpleDateFormat formatter = new SimpleDateFormat("ddMMyyyy_HHmmSS");
   String strCurrDate = formatter.format(new java.util.Date());
   String strfileNm = "Customer_" + strCurrDate + ".txt";
   String strFileGenLoc = strFileLocation + "/" + strfileNm;
   String Query1="select '0'||to_char(sysdate,'YYYYMMDD')||'123456789' class_code from   dual";
   String Query2="select '0'||to_char(sysdate,'YYYYMMDD')||'123456789' class_code from   dual";
  try {
  Statement stmt = null;
  ResultSet rs = null;
  Statement stmt1 = null;
  ResultSet rs1 = null;

     stmt = conn.createStatement();
     stmt1 = conn.createStatement();

     rs = stmt.executeQuery(Query1);
     rs1 = stmt1.executeQuery(Query2);

 File f = new File(strFileGenLoc);
 OutputStream os = (OutputStream)new FileOutputStream(f,true);
 String encoding = "UTF8";
 OutputStreamWriter osw = new OutputStreamWriter(os, encoding);
 BufferedWriter bw = new BufferedWriter(osw);

 while (rs.next() ) {

     bw.write(rs.getString(1)==null? "":rs.getString(1));
     bw.write("  ");


 }
 bw.flush();
 bw.close();
 } catch (Exception e) {
 System.out.println(
     "Exception occured while getting resultset by the query");
 e.printStackTrace();
} finally {
 try {
     if (conn != null) {
         System.out.println("Closing the connection" + conn);
         conn.close();
     }
 } catch (SQLException e) {
     System.out.println(
         "Exception occured while closing the connection");
     e.printStackTrace();
   }
 }
     return objArrayListValue;
}

The above code is working fine. it writes the content of "rs" resultset data in text file

Now what i want is ,i need to append the

the content in "rs2" resultset to the "same text file"(ie . i need to append "rs2" content with "rs" content in the same text file)..