How Do I Code A Java Textfield That Auto Generates Remarks Basing On Different Ranges Of Marks/Grades ?

Connection con;
PreparedStatement pstmt;

String sql = "INSERT INTO appraisalreport VALUES (?,?,?,?,?,?,?,?,?,?,?,?);";


try{
    Class.forName(DRIVER);
    
    con = DriverManager.getConnection(DB_URL, UNAME, PWD);
    
    pstmt = con.prepareStatement(sql);
    
    pstmt.setInt(1, new Integer(tfsn.getText()));
    pstmt.setString(2, tfdate.getText());
    pstmt.setString(3, tfap.getText());
    pstmt.setString(4, jTextField1.getText());
    pstmt.setInt(5, new Integer(jpunc.getText()));
    pstmt.setInt(6, new Integer(jattend.getText()));
    pstmt.setInt(7, new Integer(jteam.getText()));
    pstmt.setInt(8, new Integer(jsocial.getText()));
    pstmt.setInt(9, new Integer(jsmart.getText()));
    pstmt.setInt(10, new Integer(jtask.getText()));
    pstmt.setInt(11, new Integer(jtotal.getText()));
    pstmt.setString(12, jTextField9.getText());
                          
    int n = pstmt.executeUpdate();
    
    if(n > 0){
        javax.swing.JOptionPane.showMessageDialog(rootPane, "Appraisal successful !");
    }else{
        javax.swing.JOptionPane.showMessageDialog(rootPane, "Appraisal failed !");
    }
    
    pstmt.close();
    con.close();
    
}catch(ClassNotFoundException e){
    System.out.println("Driver not registered");
}catch(SQLException se){
    se.printStackTrace();
}