Sum of database field and set on JTable.


try
    {
      Connection c=new Connection();
            java.sql.Connection con=c.connectit();
    String sql="select SUM(Quantity) from stock where Category='s'";
    PreparedStatement pst=con.prepareStatement(sql);
    ResultSet rs=pst.executeQuery(sql);
while(rs.next())
{
    jLabel6.setText(""+rs.getInt(1));
}
con.close();
pst.close();
    }
    catch(Exception e)
    {
        JOptionPane.showMessageDialog(null,e);
    }

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