(Solved) : Please Help Add Comments Java Program Thanks Really Appreciate Help Private Void Jtxtstud Q37738176 . . . .

Please help me add comments on the JAVA program below.. Thanksand really appreciate any help!

      private voidjtxtStudentIDKeyTyped(java.awt.event.KeyEvent evt){                                       

        // TODO add yourhandling code here:

         chariNumber = evt.getKeyChar();

       if(!(Character.isDigit(iNumber))      

        ||(iNumber ==KeyEvent.VK_BACK_SPACE)

        ||(iNumber ==KeyEvent.VK_DELETE)){

        evt.consume();

    }   

private voidjbtnDeleteActionPerformed(java.awt.event.ActionEvent evt){                                           

        // TODO add yourhandling code here:

       DefaultTableModelmodel = (DefaultTableModel) jTable.getModel();

       if(jTable.getSelectedRow()==-1){

           if(jTable.getRowCount()==0){

               JOptionPane.showMessageDialog(null,”No data to delete “,

                       “StudentResult System”,JOptionPane.OK_OPTION);

            }else{

               JOptionPane.showMessageDialog(null,”Please select a row to delete “,

                       “StudentResult System”,JOptionPane.OK_OPTION);

            }

        }else{

           model.removeRow(jTable.getSelectedRow());

        }

    }

private void jtxtSurnameKeyTyped(java.awt.event.KeyEvent evt){                                    

        // TODO add yourhandling code here:

        charc=evt.getKeyChar();

       if(!(Character.isAlphabetic(c)

        ||  (c==KeyEvent.VK_BACK_SPACE)

        ||  c==KeyEvent.VK_DELETE))

        evt.consume();

    }  

private voidjBtnImportActionPerformed(java.awt.event.ActionEvent evt){                                           

        // TODO add yourhandling code here:

        String filePath= “/Users/maestro/Desktop/table.txt”;

        File file = newFile(filePath);

        try {

            FileReaderfr = new FileReader(file);

           BufferedReaderbr = new BufferedReader(fr);

           DefaultTableModelmodel = (DefaultTableModel)jTable.getModel();

            Object[]lines = br.lines().toArray();

            for(inti = 0; i < lines.length; i++){

               String[]row = lines[i].toString().split(” “);

               model.addRow(row);

            }

        } catch(FileNotFoundException ex) {

            Logger.getLogger(Student_Result.class.getName()).log(Level.SEVERE,null, ex);

        }

    }                                          

    private voidjBtnExportActionPerformed(java.awt.event.ActionEvent evt){                                           

        // TODO add yourhandling code here:

        String filePath=