POI ID number How to handle the date value of the phone number

1 Private StaticSimpleDateFormat DateFormat =NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss"); 2 3 /**4 * Get the value of a cell5      * 6      * @paramCell7      * @return8      */9      Public StaticString getcellvalue (cell cell) {TenDecimalFormat DF =NewDecimalFormat ("#");  One         if(Cell = =NULL) A             return""; -  -         if(Cell.getcelltype () = =cell.cell_type_string) { the             returnCell.getstringcellvalue (); -}Else if(Cell.getcelltype () = =Cell.cell_type_boolean) { -             returnstring.valueof (Cell.getbooleancellvalue ()); -}Else if(Cell.getcelltype () = =Cell.cell_type_formula) { +             returnCell.getcellformula (); -}Else if(Cell.getcelltype () = =cell.cell_type_numeric) { +             if(hssfdateutil.iscelldateformatted (cell)) {//judgment is a date type ADate dt = hssfdateutil.getjavadate (Cell.getnumericcellvalue ());//get into Date type at                 returndateformat.format (DT);  -}Else{//conversion phone number and ID number are string -                 returnstring.valueof (Df.format (Cell.getnumericcellvalue ())); -             } -              -              in              -         } to         return""; +}

POI ID number How to handle the date value of the phone number