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# Java Recursively sum up the Excel column values

Member Posts: 1
edited Apr 26, 2013 2:35AM
I have a requirement to perform some calculations using java taking inputs from Excel file.

My Excel file content is as follows:

Row[0] ECOUT - EXPECTED VALUE | TotalDownPaymentAmount = 900.00
Row[1] ECIN - INPUT VALUE (ADD) | NetTradeAllowanceAmount = -600.00
Row[2] ECIN - INPUT VALUE (ADD) | CashDownPayment = 100.00
Row[3] ECIN - INPUT VALUE (ADD) | OtherDownPaymentAmount = PATH DOES NOT EXIST
Row[4] ECIN - INPUT VALUE (ADD) | ManufacturerRebateAmount = 250.00
Row[5] ECIN - INPUT VALUE (ADD) | DeferredDownPaymentAmount = PATH DOES NOT EXIST
Row[6] ECIN - INPUT VALUE (ADD)
Row[7] ECIN - INPUT VALUE (SUB) | TotalDownPaymentAmount = 900.00
Row[8] ECIN - INPUT VALUE (SUB) | NetTradeAllowanceAmount = -600.00
Row[9] ECIN - INPUT VALUE (SUB) | CashDownPayment = 100.00
Row[10] ECIN - INPUT VALUE (SUB) | OtherDownPaymentAmount = PATH DOES NOT EXIST
Row[11] ECIN - INPUT VALUE (SUB) | ManufacturerRebateAmount = 250.00
Row[12] ECIN - INPUT VALUE (SUB) | DeferredDownPaymentAmount = PATH DOES NOT EXIST
Row[13] ECIN - INPUT VALUE (SUB)
Row[14]
Row[15] ECOUT EXPECTED VALUE 900.00
Row[16] ECOUT ACTUAL VALUE 900.00
Row[17] RESULTS PASS

To perform one calculation there can be any no.of rows but columns are fixed i.e., column(0) & column(1). My calculation logic in java is as follows:

import java.io.*;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;

{
public static void main(String[] args) throws Exception, FileNotFoundException, IOException
{
try
{
Workbook workbook = WorkbookFactory.create(new FileInputStream("C:/Users/Pradeep.HALCYONTEKDC/Desktop/Excel.xlsx"));
Sheet sheet = workbook.getSheet("ROLLUPS - Results");
double summ = 0;
double sub = 0;
double result=0;

for (int i = 0; i < sheet.getLastRowNum(); i++)
{
Row row = sheet.getRow(i);
Cell cell1 = row.getCell(0);
Cell cell2 = row.getCell(1);

if (cell1 != null && cell2 != null)
{
String cellValue1 = cell1.getStringCellValue();
String cellValue2 = cell2.getStringCellValue();
if(cellValue2.contains("="))
{
String stringNumber = cellValue2.split("=")[1].trim();
{
if (cellValue2.split("=")[1].trim().contains("PATH DOES NOT EXIST"))
{
//System.out.println("Path Does Not Exist");
}
else
{
//System.out.println(cellValue1 + "/" + stringNumber);
summ = getSumm(summ, stringNumber);
}

}
else if (cellValue1.contains("SUB"))
{
if (cellValue2.split("=")[1].trim().contains("PATH DOES NOT EXIST"))
{
//System.out.println("Path Does Not Exist");
}
else
{
//System.out.println(cellValue1 + "/" + stringNumber);
sub = getSubstraction(sub, stringNumber);
}
}
/* else
{
System.out.println("Smt wrong");
}*/
}
}
}
System.out.println("ADD = " + summ);
System.out.println("SUB = " + sub);
result=summ-sub;
System.out.println("RESULT = " result"0");
}
catch(NullPointerException e)
{
e.printStackTrace();
}
catch(Exception e)
{
e.printStackTrace();
}
}
private static double getSubstraction(double main, String your)
{
if (your.contains("-"))
return main + Double.parseDouble(your.replace("-", ""));
else if (your.contains("+"))
return main - Double.parseDouble(your.replace("+", ""));
else
return main - Double.parseDouble(your);
}
private static double getSumm(double main, String your)
{
if (your.contains("-"))
return main - Double.parseDouble(your.replace("-", ""));
else if (your.contains("+"))
return main + Double.parseDouble(your.replace("+", ""));
else
return main + Double.parseDouble(your);
}
}

Up to here fine. If there exists any more data in the rows after the row having cell value RESULTS like below, my program should perform the same logic repeatedly until it finds empty row. i.e., if program find empty row after RESULTS row stop the loop, else continue the loop to perform the no.of individual calculations.

column(o) column(1)
Row[0] ECOUT - EXPECTED VALUE | TotalDownPaymentAmount = 900.00
Row[1] ECIN - INPUT VALUE (ADD) | NetTradeAllowanceAmount = -600.00
Row[2] ECIN - INPUT VALUE (ADD) | CashDownPayment = 100.00
Row[3] ECIN - INPUT VALUE (ADD) | OtherDownPaymentAmount = PATH DOES NOT EXIST
Row[4] ECIN - INPUT VALUE (ADD) | ManufacturerRebateAmount = 250.00
Row[5] ECIN - INPUT VALUE (ADD) | DeferredDownPaymentAmount = PATH DOES NOT EXIST
Row[6] ECIN - INPUT VALUE (ADD)
Row[7] ECIN - INPUT VALUE (SUB) | TotalDownPaymentAmount = 900.00
Row[8] ECIN - INPUT VALUE (SUB) | NetTradeAllowanceAmount = -600.00
Row[9] ECIN - INPUT VALUE (SUB) | CashDownPayment = 100.00
Row[10] ECIN - INPUT VALUE (SUB) | OtherDownPaymentAmount = PATH DOES NOT EXIST
Row[11] ECIN - INPUT VALUE (SUB) | ManufacturerRebateAmount = 250.00
Row[12] ECIN - INPUT VALUE (SUB) | DeferredDownPaymentAmount = PATH DOES NOT EXIST
Row[13] ECIN - INPUT VALUE (SUB)
Row[14]
Row[15] ECOUT EXPECTED VALUE | 900.00
Row[16] ECOUT ACTUAL VALUE | 900.00
Row[17] RESULTS | PASS
Row[18]
Row[19] ECOUT - EXPECTED VALUE | Amount = 1100.00
Row[20] ECIN - INPUT VALUE (ADD) | TradeAllowance = -300.00
Row[21] ECIN - INPUT VALUE (ADD) | Cash = 400.00
Row[22] ECIN - INPUT VALUE (ADD) | PaymentAmount = PATH DOES NOT EXIST
Row[23] ECIN - INPUT VALUE (ADD) | RebateAmount = 950.00
Row[24] ECIN - INPUT VALUE (ADD) | DownPaymentAmount = PATH DOES NOT EXIST
Row[25] ECIN - INPUT VALUE (ADD)
Row[26] ECIN - INPUT VALUE (SUB) | Total = 900.00
Row[27] ECIN - INPUT VALUE (SUB) | NetAllowanceAmount = -600.00
Row[28] ECIN - INPUT VALUE (SUB) | CashPayment = 100.00
Row[29] ECIN - INPUT VALUE (SUB) | OtherAmount = PATH DOES NOT EXIST
Row[30] ECIN - INPUT VALUE (SUB) | RebateAmount = 250.00
Row[31] ECIN - INPUT VALUE (SUB) | DownPaymentAmount = PATH DOES NOT EXIST
Row[32] ECIN - INPUT VALUE (SUB)
Row[33]
Row[34] ECOUT EXPECTED VALUE | 440.00
Row[35] ECOUT ACTUAL VALUE | 320.00
Row[36] RESULTS | FAIL
Row[37]
Row[38] ECOUT - EXPECTED VALUE | Bell = 200.00
Row[39] ECIN - INPUT VALUE (ADD) | Charges = -700.00
Row[40] ECIN - INPUT VALUE (ADD) | Expenses = PATH DOES NOT EXIST
Row[41] ECIN - INPUT VALUE (ADD)
Row[42] ECIN - INPUT VALUE (SUB) | Cosmetics = 300.00
Row[43] ECIN - INPUT VALUE (SUB) | Allowances = -100.00
Row[44] ECIN - INPUT VALUE (SUB) | CashPayment = 500.00
Row[45] ECIN - INPUT VALUE (SUB)
Row[46]
Row[47] ECOUT EXPECTED VALUE | 640.00
Row[48] ECOUT ACTUAL VALUE | 720.00
Row[49] RESULTS | FAIL

I could able to write the logic for one calculation, but I don't have any idea to use the same logic to perform no.of times for no.of calculations if there exists any more rows after the row RESULTS.Please help me in this case.

If my requirement is not clear, please let me know. Thank you.

Edited by: 1002444 on Apr 25, 2013 11:20 PM
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