title: delete a row in csv file
body: <p>I am appending the data to the last row of a csv. I wanted to delete the existing row and then rewrite it with the appended element. Is there any way of deleting the row in csv? I am using opencsv to read and the write the file. I tried using CSVIterator class. However, it seems the iterator does not support the remove() operation. 
  Here is the code that I tried:</p>
  
  <pre><code>static String[] readLastRecord(File outputCSVFile) throws WAGException {
          checkArgument(outputCSVFile != null, "Output CSV file cannot be null");
          FileReader fileReader = null;
          CSVReader csvFileReader = null;
          CSVIterator csvIterator = null;
          String[] csvLastRecord = null;
          try {
              fileReader = new FileReader(outputCSVFile);
              csvFileReader = new CSVReader(fileReader, ',', '\'',
                      csvRowCount - 1);
              csvIterator = new CSVIterator(csvFileReader);
              while (csvIterator.hasNext()) {
                  csvLastRecord = csvIterator.next();
                  csvIterator.remove();
              }
          } catch (IOException ioEx) {
              throw new WAGException(
                      WAGInputExceptionMessage.FILE_READ_ERR.getMessage());
          } finally {
              try {
                  if (csvFileReader != null)
                      csvFileReader.close();
              } catch (IOException ioEx) {
                  throw new WAGException(
                          WAGInputExceptionMessage.FILE_CLOSE_ERR.getMessage());
              }
          }
          return csvLastRecord;
      }
  </code></pre>