Please help me i have to finish this by tonight

Question

Hi Herewith I have enclosed the code.. I am not sure where i am going wrong..moreover i am very new to this technologies.. i need to finish this by tonight.. anyone helps that will be great..
here is my problem.. i need to check a rebate id which exists in the database.. if it exists I have to update the value and if doesn't exits i have to insert a new row..
My jsp will contails 10 rows.. Once after submit.. I have to check with the database whetehr that rebate_sku_num exits.. if exits i need to update that row.. if not i have to insert a new record.. here is my code.. please give some solution.. thanks
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.SingleThreadModel;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import java.io.IOException;
import java.sql.ResultSet;
import java.io.*;
import java.util.*;
import java.util.Date;
import java.text.*;
public class AddRebate extends HttpServlet implements SingleThreadModel {
public void init(ServletConfig servletconfig) throws ServletException {
super.init(servletconfig);
public void doPost(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)
throws ServletException, IOException {
HttpSession session;
session = httpservletrequest.getSession(true);
String user_name;
String divisionCode;
String rebate_sku_num[];
String selectedMonth;
String amount[];
String message = "";
String Query="";
String RebateId="";
boolean flag = true;
// from here
Calendar todaysdate = new GregorianCalendar();
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");
SimpleDateFormat sdf1 = new SimpleDateFormat("MM/dd/yyyy HH:MM:SS");     
System.out.println("today's date: " + sdf.format(todaysdate.getTime()));
String entryDate = sdf.format(todaysdate.getTime());
String entryDate1 = sdf1.format(todaysdate.getTime());
System.out.println("entering date is " +entryDate) ; 
System.out.println("entering date is " +entryDate1) ; 
// to here
user_name = (String) session.getAttribute("user_name");
divisionCode = (String) session.getAttribute("division_code");
selectedMonth = httpservletrequest.getParameter("selectedMonth");
rebate_sku_num = httpservletrequest.getParameterValues("rebateId");
amount = httpservletrequest.getParameterValues("amount");
System.out.println("AddRebate : doPost() : selectedMonth = " + selectedMonth);
System.out.println("AddRebate : doPost() : rebate_sku_num = " + rebate_sku_num);
System.out.println("AddRebate : doPost() : amount = " + amount);
flag =true;
if (flag) {
// from here
try {
String s = "select REBATE_SKU_NUM from EASMSA_REBATE_SKU_DETAILS_TB";
System.out.println("AdjustmentServlet : doGet() : getting maximum adjustment ID query : " + s);
ResultSet resultset = DatabaseConnection.executeQuery(s);
if (resultset != null) {
while (resultset.next()) {
RebateId = resultset.getString("REBATE_SKU_NUM");
System.out.println("the REBATE_SKU_NUM is " + RebateId);
}else{
System.out.println("AdjustmentServlet : doGet() : getting maximum adjustment ID : resltset is null " );
} catch (Exception exception1) {
System.out.println("AdjustmentServlet : doGet() : exception in getting max of adjustment id");
exception1.printStackTrace();
// to herer
for (int i = 0; i < rebate_sku_num.length; i++) {
if ((rebate_sku_num[i] != RebateId)) {
System.out.println("get the values" +rebate_sku_num);
System.out.println("get the values" + RebateId);
Query = "INSERT INTO EASMSA_REBATE_SKU_DETAILS_TB " +
"( REBATE_SKU_NUM, REBATE_DATE, REBATE_AMT, CREATED_BY," +
"CREATION_DATE, LAST_UPDATED_BY, LAST_UPDATE_DATE ) VALUES (" +
"'" + rebate_sku_num[i] + "', " +
"TO_Date( '" + "30/" + selectedMonth + "', 'dd/MM/YYYY HH:MI:SS AM'), " +
"'" + amount[i] + "' , '" + user_name + "'" +
", TO_Date( '" + entryDate + "', 'MM/dd/YYYY HH:MI:SS AM')" +
", '" + user_name + "'," +
" TO_Date( '" + entryDate + "', 'MM/dd/YYYY HH:MI:SS AM'))";
System.out.println("query is executed" +Query);
}else if ((rebate_sku_num[i] == RebateId )){
Query = "update EASMSA_REBATE_SKU_DETAILS_TB set REBATE_AMT=" + amount[i] + " where REBATE_SKU_NUM='" + rebate_sku_num[i] + "'";
System.out.println("query is executed for updation" +Query);
try {
if (DatabaseConnection.executeUpdate(Query) == 0) {
System.out.println(" AddRebate : doPost() : rollback: error in executing update query= " + Query);
DatabaseConnection.rollBack();
message = "Some problem in updating transactions. Please try again later.";
flag = false;
break;
} else {
System.out.println("AddRebate : doPost() : update sucessfull");
message = "Rebate Transactions has been updated.";
flag = true;
} catch (Exception ex) {
System.out.println("AddRebate : doPost() : exception in update query");
message = "Some problem in updating transactions. Please try again later.";
flag = false;
ex.printStackTrace();
session.setAttribute("message", message);
httpservletresponse.sendRedirect("Welcome1.jsp?s=y");
return;

Answer 1

hey try this code,i made changes in ur code,ur logic wasnt good on it
thanks hithesh
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.SingleThreadModel;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import java.io.IOException;
import java.sql.ResultSet;
import java.io.*;
import java.util.*;
import java.util.Date;
import java.text.*;
public class AddRebate extends HttpServlet implements SingleThreadModel {
public void init(ServletConfig servletconfig) throws ServletException {
super.init(servletconfig);
public void doPost(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)
throws ServletException, IOException {
HttpSession session;
session = httpservletrequest.getSession(true);
String user_name;
String divisionCode;
String rebate_sku_num[];
String selectedMonth;
String amount[];
String message = "";
String Query="";
String RebateId[];
boolean flag = true;
// from here
Calendar todaysdate = new GregorianCalendar();
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");
SimpleDateFormat sdf1 = new SimpleDateFormat("MM/dd/yyyy HH:MM:SS");
System.out.println("today's date: " + sdf.format(todaysdate.getTime()));
String entryDate = sdf.format(todaysdate.getTime());
String entryDate1 = sdf1.format(todaysdate.getTime());
System.out.println("entering date is " +entryDate) ;
System.out.println("entering date is " +entryDate1) ;
// to here
user_name = (String) session.getAttribute("user_name");
divisionCode = (String) session.getAttribute("division_code");
selectedMonth = httpservletrequest.getParameter("selectedMonth");
rebate_sku_num = httpservletrequest.getParameterValues("rebateId");
amount = httpservletrequest.getParameterValues("amount");
System.out.println("AddRebate : doPost() : selectedMonth = " + selectedMonth);
System.out.println("AddRebate : doPost() : rebate_sku_num = " + rebate_sku_num);
System.out.println("AddRebate : doPost() : amount = " + amount);
flag =true;
if (flag) {
// from here
try {
String s = "select REBATE_SKU_NUM from EASMSA_REBATE_SKU_DETAILS_TB";
System.out.println("AdjustmentServlet : doGet() : getting maximum adjustment ID query : " + s);
ResultSet resultset = DatabaseConnection.executeQuery(s);
if (resultset != null) {
int j=0;
while (resultset.next()) {
RebateId[j] = resultset.getString("REBATE_SKU_NUM");
System.out.println("the REBATE_SKU_NUM is " + RebateId[j]);
j++;
}else{
System.out.println("AdjustmentServlet : doGet() : getting maximum adjustment ID : resltset is null " );
} catch (Exception exception1) {
System.out.println("AdjustmentServlet : doGet() : exception in getting max of adjustment id");
exception1.printStackTrace();
// to herer
for(int i=0; i<rebate_sku_num.length,i++){
     boolean flag=false;
     for (int j = 0; j < RebateId.length; j++) {
          if ((rebate_sku_num[i] == RebateId[j])) {
               flag=true;//u found this id in database,so u need to update
               break;
     if(!flag){//if not found,add into database
          System.out.println("get the values" +rebate_sku_num);
          System.out.println("get the values" + RebateId);
          Query = "INSERT INTO EASMSA_REBATE_SKU_DETAILS_TB " +
               "( REBATE_SKU_NUM, REBATE_DATE, REBATE_AMT, CREATED_BY," +
               "CREATION_DATE, LAST_UPDATED_BY, LAST_UPDATE_DATE ) VALUES (" +
               "'" + rebate_sku_num + "', " +
               "TO_Date( '" + "30/" + selectedMonth + "', 'dd/MM/YYYY HH:MI:SS AM'), " +
               "'" + amount + "' , '" + user_name + "'" +
               ", TO_Date( '" + entryDate + "', 'MM/dd/YYYY HH:MI:SS AM')" +
               ", '" + user_name + "'," +
               " TO_Date( '" + entryDate + "', 'MM/dd/YYYY HH:MI:SS AM'))";
          System.out.println("query is executed" +Query);
     else //if found just update the database
               Query = "update EASMSA_REBATE_SKU_DETAILS_TB set REBATE_AMT=" + amount + " where REBATE_SKU_NUM='" + rebate_sku_num + "'";
               System.out.println("query is executed for updation" +Query);
     try {
          if (DatabaseConnection.executeUpdate(Query) == 0) {
               System.out.println(" AddRebate : doPost() : rollback: error in executing update query= " + Query);
               DatabaseConnection.rollBack();
               message = "Some problem in updating transactions. Please try again later.";
               flag = false;
               break;
          } else {
               System.out.println("AddRebate : doPost() : update sucessfull");
               message = "Rebate Transactions has been updated.";
               flag = true;
     } catch (Exception ex) {
          System.out.println("AddRebate : doPost() : exception in update query");
          message = "Some problem in updating transactions. Please try again later.";
          flag = false;
          ex.printStackTrace();
session.setAttribute("message", message);
httpservletresponse.sendRedirect("Welcome1.jsp?s=y");
return;