Reading and writing to and from a file to a form

Question

Hi there
I would like somebody to send me a code example,
showing me how to reading records from a file to a form,
and writing records to the same file from the same form.
I know that I have to use sycronize, but I just have not been
successful. I can constract forms, go from form to a form,
do buttons, do text fields. I can even read and write from and
to files. However I cannot do is write from a file to a form and
from a form to a file.
could somebody please explain how this done, and could you
please give me a code example. All the books seem to either
deal with forms or with files. None seem to combine both.
I am sure it is very ease to do if ONLY I knew how!!!
thank you very much in advance for you help.

Answer 1

I understand that code and I have used it before, however thanks for
trying to help me, it is really appreciated. However, that is not my
problem. I can read and write from a file to the console and vice versa.
what I cannot do, no matter how hard I try, is to write from a file, and
output it in.
I will tell you how far I have got.
I have a MenuFrame class, this is the code for it:
package WorkflowApp;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
public class MenuFrame extends JFrame {
JMenuBar menuBar1 = new JMenuBar();
JMenu menuFile = new JMenu();
JMenuItem menuFileExit = new JMenuItem();
JMenu menuHelp = new JMenu();
JMenuItem menuHelpAbout = new JMenuItem();
JToolBar toolBar = new JToolBar();
JButton jButton1 = new JButton();
JButton jButton2 = new JButton();
JButton jButton3 = new JButton();
ImageIcon image1;
ImageIcon image2;
ImageIcon image3;
JLabel statusBar = new JLabel();
Button button2 = new Button();
Button button3 = new Button();
Button button4 = new Button();
Button button5 = new Button();
Button button6 = new Button();
Button button7 = new Button();
Button button1 = new Button();
//Construct the frame
public MenuFrame() {
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
try {
jbInit();
catch(Exception e) {
e.printStackTrace();
//Component initialization
private void jbInit() throws Exception {
image1 = new ImageIcon(WorkflowApp.MenuFrame.class.getResource("openFile.gif"));
image2 = new ImageIcon(WorkflowApp.MenuFrame.class.getResource("closeFile.gif"));
image3 = new ImageIcon(WorkflowApp.MenuFrame.class.getResource("help.gif"));
this.getContentPane().setLayout(null);
this.setSize(new Dimension(400, 492));
this.setTitle("MenuFrame");
statusBar.setText(" ");
statusBar.setBounds(new Rectangle(0, 0, 3, 17));
menuFile.setText("File");
menuFileExit.setText("Exit");
menuFileExit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
fileExit_actionPerformed(e);
menuHelp.setText("Help");
menuHelpAbout.setText("About");
menuHelpAbout.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
helpAbout_actionPerformed(e);
jButton1.setIcon(image1);
jButton1.setToolTipText("Open File");
jButton2.setIcon(image2);
jButton2.setToolTipText("Close File");
jButton3.setIcon(image3);
jButton3.setToolTipText("Help");
toolBar.setBorder(null);
toolBar.setBounds(new Rectangle(2, 2, 389, 30));
button2.setBounds(new Rectangle(217, 62, 135, 44));
button2.setLabel("Staff Details");
button2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
button2_actionPerformed(e);
button3.setBounds(new Rectangle(26, 127, 135, 44));
button3.setLabel("Arange Viewing");
button3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
button3_actionPerformed(e);
button4.setBounds(new Rectangle(218, 127, 136, 41));
button4.setLabel("Valuation");
button4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
button4_actionPerformed(e);
button5.setBounds(new Rectangle(28, 196, 135, 41));
button5.setLabel("Schedule");
button6.setBounds(new Rectangle(221, 194, 133, 40));
button6.setName("button6");
button6.setLabel("Register Interest");
button7.setBounds(new Rectangle(31, 266, 133, 42));
button7.setLabel("Register Offers");
button1.setBounds(new Rectangle(27, 62, 131, 42));
button1.setLabel("New Client");
button1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
button1_actionPerformed(e);
menuFile.add(menuFileExit);
menuHelp.add(menuHelpAbout);
menuBar1.add(menuFile);
menuBar1.add(menuHelp);
this.setJMenuBar(menuBar1);
this.getContentPane().add(statusBar, null);
this.getContentPane().add(toolBar, null);
toolBar.add(jButton1);
toolBar.add(jButton2, null);
toolBar.add(jButton3, null);
this.getContentPane().add(button3, null);
this.getContentPane().add(button5, null);
this.getContentPane().add(button7, null);
this.getContentPane().add(button2, null);
this.getContentPane().add(button4, null);
this.getContentPane().add(button6, null);
this.getContentPane().add(button1, null);
//File | Exit action performed
public void fileExit_actionPerformed(ActionEvent e) {
System.exit(0);
//Help | About action performed
public void helpAbout_actionPerformed(ActionEvent e) {
MenuFrame_AboutBox dlg = new MenuFrame_AboutBox(this);
Dimension dlgSize = dlg.getPreferredSize();
Dimension frmSize = getSize();
Point loc = getLocation();
dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);
dlg.setModal(true);
dlg.show();
//Overridden so we can exit on System Close
protected void processWindowEvent(WindowEvent e) {
super.processWindowEvent(e);
if(e.getID() == WindowEvent.WINDOW_CLOSING) {
fileExit_actionPerformed(null);
void button2_actionPerformed(ActionEvent e) {
StaffDetails myFrame = new StaffDetails();
myFrame.show();
void button3_actionPerformed(ActionEvent e) {
ArrangeViewing myFrame = new ArrangeViewing();
myFrame.show();
void button1_actionPerformed(ActionEvent e) {
NewClientFrame myFrame = new NewClientFrame();
myFrame.show();
// System.exit(1);
void button4_actionPerformed(ActionEvent e) {
Valuation myFrame = new Valuation();
myFrame.show();
then I have a new form class, this is the code for it
package WorkflowApp;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class NewClientFrame extends JFrame {
Label label1 = new Label();
Label label2 = new Label();
Label label3 = new Label();
Label label4 = new Label();
Label label5 = new Label();
Label label6 = new Label();
Label label7 = new Label();
Label label8 = new Label();
Label label9 = new Label();
Label label10 = new Label();
TextField textField1 = new TextField();
TextField textField2 = new TextField();
TextField textField3 = new TextField();
TextField textField4 = new TextField();
TextField textField5 = new TextField();
TextField textField6 = new TextField();
TextField textField7 = new TextField();
TextField textField8 = new TextField();
TextField textField9 = new TextField();
TextField textField10 = new TextField();
Button button1 = new Button();
Button button2 = new Button();
//Construct the frame
public NewClientFrame() {
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
try {
jbInit();
catch(Exception e) {
e.printStackTrace();
//Component initialization
private void jbInit() throws Exception {
this.getContentPane().setLayout(null);
this.setSize(new Dimension(411, 488));
this.setTitle("NewClientFrame ");
this.addWindowListener(new java.awt.event.WindowAdapter() {
public void windowClosing(WindowEvent e) {
this_windowClosing(e);
label1.setBounds(new Rectangle(21, 23, 110, 23));
label1.setAlignment(2);
label1.setText("Assign Number");
label2.setBounds(new Rectangle(23, 57, 108, 25));
label2.setAlignment(2);
label2.setText("Name");
label3.setBounds(new Rectangle(40, 91, 94, 24));
label3.setAlignment(2);
label3.setText("Address 1");
label4.setBounds(new Rectangle(21, 124, 112, 29));
label4.setAlignment(2);
label4.setText("Address 2");
label5.setBounds(new Rectangle(20, 159, 116, 29));
label5.setAlignment(2);
label5.setText("PoscCode");
label6.setBounds(new Rectangle(18, 197, 119, 26));
label6.setAlignment(2);
label6.setText("Telephone");
label7.setBounds(new Rectangle(25, 228, 112, 26));
label7.setAlignment(2);
label7.setText("Other Telephone");
label8.setBounds(new Rectangle(12, 261, 125, 24));
label8.setAlignment(2);
label8.setText("Email Address");
label9.setBounds(new Rectangle(6, 301, 138, 25));
label9.setAlignment(2);
label9.setText("Staff Assigned (Name)");
label10.setBounds(new Rectangle(22, 341, 124, 23));
label10.setAlignment(2);
label10.setText("Staff Assigned (No.)");
textField1.setBounds(new Rectangle(155, 19, 80, 26));
textField2.setBounds(new Rectangle(155, 58, 193, 24));
textField3.setBounds(new Rectangle(156, 90, 192, 25));
textField4.setBounds(new Rectangle(157, 126, 192, 23));
textField5.setBounds(new Rectangle(157, 159, 195, 25));
textField6.setBounds(new Rectangle(157, 194, 195, 26));
textField7.setBounds(new Rectangle(157, 230, 192, 24));
textField8.setBounds(new Rectangle(157, 263, 193, 25));
textField9.setBounds(new Rectangle(157, 303, 196, 24));
textField10.setBounds(new Rectangle(158, 337, 95, 24));
button1.setBounds(new Rectangle(23, 398, 144, 34));
button1.setLabel("Staff Available");
button2.setBounds(new Rectangle(211, 396, 148, 34));
button2.setLabel("Submit Record");
button2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
button2_actionPerformed(e);
this.getContentPane().add(label1, null);
this.getContentPane().add(label2, null);
this.getContentPane().add(label3, null);
this.getContentPane().add(label4, null);
this.getContentPane().add(label5, null);
this.getContentPane().add(label6, null);
this.getContentPane().add(label7, null);
this.getContentPane().add(label8, null);
this.getContentPane().add(label9, null);
this.getContentPane().add(label10, null);
this.getContentPane().add(textField1, null);
this.getContentPane().add(textField2, null);
this.getContentPane().add(textField3, null);
this.getContentPane().add(textField4, null);
this.getContentPane().add(textField5, null);
this.getContentPane().add(textField6, null);
this.getContentPane().add(textField7, null);
this.getContentPane().add(textField8, null);
this.getContentPane().add(textField9, null);
this.getContentPane().add(textField10, null);
this.getContentPane().add(button1, null);
this.getContentPane().add(button2, null);
public void fileExit_actionPerformed(ActionEvent e) {
System.exit(0);
// exit(this);
// close();
//Overridden so we can exit on System Close
protected void processWindowEvent(WindowEvent e) {
super.processWindowEvent(e);
if(e.getID() == WindowEvent.WINDOW_CLOSING) {
System.exit(0);
void button2_actionPerformed(ActionEvent e) {
// myFrame.close();
this.dispose();
void this_windowClosing(WindowEvent e) {
this.dispose();
I also have an about box, staff details, and valuation forms.
what I am trying to do is for the New client form to be able to read and write from and to a file, and display the info.
I am working in JBuilder3, a bit out of date I know, but it is the best I can do. Any Ideas how to do this.