Data is not inserting into mysql database [closed]
private static String destination;

public static void main(String[] args) {
    ArrayList data = new ArrayList();
    String str = "9035";
    int cost = 0;
    String AreaCode = null;
    int Rate = 0;
    int dur = 0;
    String calldate = null;
    String clid = null;
    String src = null;
    String dst = null;
    String dcontext = null;
    String channel = null;
    String dstchannel = null;
    String lastapp = null;
    String duration = null;
    String lastdata = null;
    String billsec = null;
    String disposition = null;
    String amaflags = null;
    String accountcode = null;
    String uniqueid = null;
    String userfield = null;
    try {
        Connection con = null;
        Class.forName("com.mysql.jdbc.Driver");
        con = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/asteriskcdrdb", "root", "techsoft");
        Statement st = con.createStatement();
        ResultSet rs = st.executeQuery("Select * from asteriskcdrdb.sp1 where areacode = '" + str + "'");

        while (rs.next()) {
            AreaCode = rs.getString("AreaCode");
            //System.out.println(AreaCode);
            String Pulse = rs.getString("Pulse");
            Rate = rs.getInt("Rate/pulse");
            // System.out.println(Rate);
        }
        rs.close();
        st.close();
    } catch (Exception e) {
        System.out.println(e);


    }
    if (AreaCode.equals(str)) {
        //System.out.println("Hii");
        try {
            Connection conn = null;
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection(
                    "jdbc:mysql://localhost:3306/asteriskcdrdb", "root", "techsoft");
            Statement stmt = conn.createStatement();
            ResultSet rst = stmt.executeQuery("Select * from cdr where src ='9035020090'");

            while (rst.next()) {


                while (rst.next()) {
                    calldate = rst.getString("calldate");

                    //System.out.println(calldate);
                    clid = rst.getString("clid");
                    src = rst.getString("src");
                    dst = rst.getString("dst");
                    dcontext = rst.getString("dcontext");
                    channel = rst.getString("channel");
                    dstchannel = rst.getString("dstchannel");
                    lastapp = rst.getString("lastapp");
                    lastdata = rst.getString("lastdata");
                    duration = rst.getString("duration");
                    // System.out.println(duration);
                    dur = Integer.parseInt(duration);
                    data.add(dur);
                    //System.out.println(dur);
                    billsec = rst.getString("billsec");
                    disposition = rst.getString("disposition");
                    amaflags = rst.getString("amaflags");
                    accountcode = rst.getString("accountcode");
                    uniqueid = rst.getString("uniqueid");
                    userfield = rst.getString("userfield");
                }
            }
        } catch (Exception e) {
            System.out.println(e);
        }
    }

    for (int i = 0; i < data.size(); i++) {
        System.out.println(data);
        int c=(int) data.get(i);
        System.out.println(c);
        int min = 60;
       // System.out.println(dur);
        int quotient = c / min;
       // System.out.println(quotient);

        int reminder =c % min;
      //  System.out.println(reminder);

        if (reminder > 0) {
            quotient = quotient + 1;
            System.out.println(quotient);
            cost = quotient * Rate;
            System.out.println(cost);

            try {
                Connection conn = null;
                Class.forName("com.mysql.jdbc.Driver");
                conn = DriverManager.getConnection(
                        "jdbc:mysql://localhost:3306/asteriskcdrdb", "root",
                        "techsoft");

                Statement stmt = conn.createStatement();

                 System.out.println(cost);
                System.out.println("update cdr set cdrcost ='" + cost + "'  where src ='9035020090'");
         stmt.executeUpdate("update cdr set cdrcost ='" + cost + "'  where src ='9035020090'");

                // stmt.executeUpdate("insert into cdrcost  (calldate,clid,src,dst,dcontext,channel,dstchannel,lastapp,lastdata,duration,billsec,disposition,amaflags,accountcode,uniqueid,userfield,cdrcost) values ('" + calldate + "','" + clid + "','" + src + "','" + dst + "','" + dcontext + "','" + channel + "','" + dstchannel + "','" + lastapp + "','" + lastdata + "','" + duration + "','" + billsec + "','" + disposition + "','" + amaflags + "','" + accountcode + "','" + uniqueid + "','" + userfield + "','" + cost + "')");
             } catch (Exception e) {
                System.out.println(e);
            }
        }

    }
}