code: public String row2String(int pvRow) {
  		StringBuffer sb = new StringBuffer();
  		List<?> lvColumn = rows.get(pvRow);
  		int lvSize = lvColumn.size();
  		for (int i=0;i<lvSize; i++) {
  			sb.append(lvColumn.get(i));
  			if (i < (lvSize-1)) {
  				sb.append(getDelimiter());
  			}
  		}
  		return sb.toString();
  	}
docs: Convert a row of the table in a String,
  where the every column is seperated with a delimiter.
  @param pvRow Number of row.
  @return The row as String.