SQL date format() not working in JTable while retrieving data

Question

MySQL query to retrieve data in JTable from MySQL DB is failing in Java Code but work fine in SQL Workbench

Following query:

SELECT date_format(emp_date,'%d-%b-%Y') as emp_date,emp_name,emp_accno,emp_amt,pay_mode,e_comp,e_remark FROM emppayment";

While retrieving i need "dd-mmm-yyyy" (04-Apr-2020) format so i am using above date_format to convert as per requirement. While executing in JTable i getting following error.

Error: java.sql.SQLException: Bad format for DATE '20-Mar-2020' in column 1.

           String dquery = "SELECT date_format(emp_date,'%d-%b-%Y') as emp_date, emp_name,emp_accno,emp_ifsc,sal_month,emp_amt,pay_mode,e_comp,e_remark FROM emppayment;   

            pst = con.prepareStatement(dquery);
            rs = pst.executeQuery();       
            DefaultTableModel tm = (DefaultTableModel) jTable1.getModel();
            tm.setRowCount(0);

         while (rs.next()) {
             Object obj[]= {
            rs.getString("emp_date"),
            rs.getString("emp_name"),
            rs.getString("emp_accno"),
            rs.getString("emp_ifsc"),
            rs.getString("sal_month"),
            rs.getString("emp_amt"),
            rs.getString(pay_mode),
            rs.getString(e_comp),
            rs.getString(e_remark)};

            tm2.addRow(obj);
 }

Please guide me

Answer 1

Data type mismatch

As to your error, I wonder if the type of the column in the data model backing your JTable specifies a date-time data type while your code is providing a String object. So, a data type mismatch.

Use Java, not SQL

I would do such formatting in your Java app rather than in your SQL.

LocalDate

Retrieve the value from your DATE column as a LocalDate using a JDBC driver compliant with JDBC 4.2 or later. Such drivers are able to directly exchange java.time objects with the database.

LocalDate ld = myResultSet.getObject( … , LocalDate.class ) ;

Localize with DateTimeFormatter

Automatically localize for presentation to the user.

Locale locale = Locale.CANADA_FRENCH ;  // Or Locale.US and so on.
DateTimeFormatter f = DateTimeFormatter.ofLocalizedDate( FormatStyle.MEDIUM ).withLocale( locale ) ;
String output = ld.format( f ) ;

Hard-coding a format

If you insist on hard-coding a specific format, specify your formatting pattern.

DateTimeFormatter.ofPattern( "dd-MMM-uuuu" , Locale.UK ) ;