java.lang.ArrayIndexOutOfBoundsException reading from excel file

Question

I am trying to read the following data from an Excel sheet

With the following code

import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;
import jxl.read.biff.BiffException;

 public String readUsernameFromExcel() {
        File src = new File("C:/filepath.xls");

        try {

            Workbook wb = Workbook.getWorkbook(src);
            Sheet sh1 = wb.getSheet(0);
            Cell a2 = sh1.getCell(0, 2);
            data1 = a2.getContents().trim();


        } catch (BiffException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return data1;

    }

So when I try and get the cell 0,1 I can pick up the username 1000483 just fine. But when I try to read 0,2 and I get java.lang.ArrayIndexOutOfBoundsException: 2.

What I'm trying to do is read data from an excel sheet return it as a String and then pass it in to login my application. But it seems when I try 0,2 I'm going outside of what is expected. I've tried a few things such as a for loop

 for (int rows = 0; rows < sh1.getRows(); rows++) {
 Sheet sh1 = wb.getSheet(0);
            Cell a2 = sh1.getCell(0, 2);

}

I understand the first number is the column and the second is the row. I also understand that the code isn't able to see past 0,1. I'm just at a loss as to how to get it to see the rest of the sheet after trying other solutions of the same problem.

Answer 1

sh1.getRows() returns 3. As loop starts from 0, sh1.getRows() needs to be decremented by 1 (as below). Below loop works fine and returns value properly.

import java.io.File;
import java.io.IOException;

import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;

public class Excel {

    public static void main(String[] args) {
        File src = new File("c:/filepath.xls");

        try {
            String data1;
            Workbook wb = Workbook.getWorkbook(src);
            Sheet sh1 = wb.getSheet(0);


            for (int rows = 1; rows < sh1.getRows(); rows++)  {
                for (int column = 0; column <= sh1.getColumns()-1; column++) {

                    Cell a2 = sh1.getCell(column, rows);
                    data1 = a2.getContents().trim();
                    System.out.println(data1);
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
        } 
    }



}

The above code works and fetches the date without error