docs: public void addRow(String[] data) {
  
          if (data.length != iColCount) {
              return;
          }
  
          String[] row = new String[iColCount];
  
          for (int i = 0; i < iColCount; i++) {
              row[i] = data[i];
  
              if (row[i] == null) {
                  row[i] = "(null)";
              }
          }
  
          vData.addElement(row);
  
          iRowCount++;
      }