title: read excel file using Apache POI
body: <p>I have created this code to read the contents of excel files using Apache POI. I am using eclipse as editor but when i ran the code i have problem in the line that I have in bold. What's the problem?
  The content of excel is the following:</p>
  
  <pre><code>Emp ID  Name    Salary
  
   1.0    john    2000000.0
  
   2.0    dean    4200000.0
  
   3.0    sam     2800000.0
  
   4.0    cass    600000.0
  </code></pre>
  
  <hr>
  
  <pre><code>import java.io.*;
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  import org.apache.poi.hssf.usermodel.HSSFCell;
  import org.apache.poi.hssf.usermodel.HSSFRow;
  import org.apache.poi.hssf.usermodel.HSSFSheet;
  import org.apache.poi.hssf.usermodel.HSSFWorkbook;
  import org.apache.poi.poifs.filesystem.POIFSFileSystem;
  
  
  
  public class ExcelRead {
  
  public static void main(String[] args) throws Exception {
      File excel = new File ("C:\\Users\\Efi\\Documents\\test.xls");
      FileInputStream fis = new FileInputStream(excel);
  
      HSSFWorkbook wb = new HSSFWorkbook(fis);
      HSSFSheet ws = wb.getSheet("Input");
  
      int rowNum = ws.getLastRowNum()+1;
      int colNum = ws.getRow(0).getLastCellNum();
      String[][] data = new String[rowNum][colNum];
  
  
      for (int i=0; i&lt;rowNum; i++){
          HSSFRow row = ws.getRow(i);
              for (int j=0; j&lt;colNum; j++){
                  HSSFCell cell = row.getCell(j);
                  String value = cellToString(cell);
                  data[i][j] = value;
                  System.out.println("The value is" + value);
  
              }
         }
      }
  
  public static String cellToString (HSSFCell cell){
  
  int type;
  Object result;
  type = cell.getCellType();
  
      switch(type) {
  
  
      case 0://numeric value in excel
          result = cell.getNumericCellValue();
          break;
      case 1: //string value in excel
          result = cell.getStringCellValue();
          break;
      case 2: //boolean value in excel
          result = cell.getBooleanCellValue ();
          break;
      default:
          ***throw new RunTimeException("There are not support for this type of               
         cell");***
          }
  
  return result.toString();
  }
  
  }
  </code></pre>