try {

        Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/photocopy","root","");

        String sql="SELECT * FROM `prices`";
        PreparedStatement pstmt = conn.prepareStatement(sql);
        ResultSet rs =pstmt.executeQuery();

        while(rs.next()){


        String pathayo = rs.getString("color");



        jComboBox3.addItem(pathayo);




        }


    } catch (Exception e) {
    }