About web browser's refresh

my code:
<%@ page language="java" contentType="text/html; charset=GBK" %>
<HTML>
<HEAD>
     <META HTTP-EQUIV="Content-Type" CONTENT="text/html;CHARSET=gb2312">
     
     <META HTTP-EQUIV="Cache-Control" CONTENT="no-cache">
     <TITLE>update</TITLE>
<link rel="stylesheet" type="text/css"
href='<%= request.getContextPath() + "/style/result-set.css" %>'>
</HEAD>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsf/donar/components" prefix="d" %>
<BODY BGCOLOR="white">
<f:loadBundle basename="cn.donar.bundles.Resources" var="bundle"/>
<f:view>
<h:messages globalOnly="true"/>
<h:form id="myform">
<h:panel_grid styleClass="result" columns="1">
<h:panel_group styleClass="hcititle">
<h:output_text value="#{bundle.operatorlist}"/>
</h:panel_group >
<h:panel_group >
<h:data_table id="table"
     headerClass="hcihead"
     rowClasses="rescontent,rescontent_"
     styleClass="result"
     rows="14" binding="#{operatorBean.data}"
     value="#{operatorBean.items}" var="sci">
     
<h:column>
<h:selectboolean_checkbox
id="checked"
binding="#{operatorBean.checked}"/>
</h:column>
<h:column>
<f:facet name="header">
<h:output_text value="#{bundle.operator_id}"/>
</f:facet>
<h:output_text id="operator_id" value="#{sci.operatorId}"/>
</h:column>
<h:column>
<f:facet name="header">
<h:output_text value="#{bundle.operator_name}"/>
</f:facet>
<h:output_text id="operator_name" value="#{sci.operatorName}"/>
</h:column>
<h:column>
<f:facet name="header">
<h:output_text value="#{bundle.agency_id}"/>
</f:facet>
<h:output_text id="agency_id" value="#{sci.agencyId}" />
</h:column>
<h:column>
<f:facet name="header">
<h:output_text value="#{bundle.branch_id}" />
</f:facet>
<h:output_text value="#{sci.branchId}" />
</h:column>
<h:column>
<f:facet name="header">
<h:output_text value="#{bundle.city_id}" />
</f:facet>
<h:output_text value="#{sci.cityId}" />
</h:column>
<h:column>
<f:facet name="header">
<h:output_text value="#{bundle.operator_pin}" />
</f:facet>
<h:output_text value="#{sci.operatorPin}" />
</h:column>
<h:column>
<f:facet name="header">
<h:output_text value="#{bundle.operator_role}" />
</f:facet>
<h:output_text value="#{sci.operatorRole}" />
</h:column>
</h:data_table>
</h:panel_group>
<h:panel_grid columns="4" columnClasses=",,colwidth,colwidth" width="100%">
<h:panel_group >
<h:command_button id="create"
action="create"
immediate="true"
          image="../images/add_0.gif"
type="SUBMIT"/>
<h:command_button id="delete"
action="#{operatorBean.delete}"
immediate="true"
          image="../images/delete_0.gif"
type="SUBMIT"/>
<h:command_link id="dlt"
action="#{operatorBean.delete}"
          >
          <h:output_text value="delete" />
          </h:command_link>
<h:command_button id="update"
action="#{operatorBean.update_reset}"
immediate="true"
          image="../images/modify.gif"
type="SUBMIT"/>
<h:command_button id="reset"
action="#{operatorBean.reset}"
          image="../images/reset.gif"
immediate="true"
value="#{bundle.reset}"
type="SUBMIT"/>
</h:panel_group>
<h:panel_group >
<h:output_text value=""/>
</h:panel_group>
<h:panel_group >
<h:command_button id="previous1"
action="#{operatorBean.previous}"
immediate="true"
          image="../images/prevPage.gif"
value="#{bundle.previous}"
               type="SUBMIT" />
<h:command_button id="next1"
action="#{operatorBean.next1}"
          style="text-align: right"
immediate="true"
          image="../images/nextPage.gif"
value="#{bundle.next}"
               type="SUBMIT" />
</h:panel_group>
<h:panel_group style="width: 60px">
<h:output_text value="#{operatorBean.currpage}" /><h:output_text value="/" />
<h:output_text value="#{operatorBean.totalpage}" /><h:output_text value="?" />
</h:panel_group>
</h:panel_group>
</h:panel_grid>
</h:panel_grid>
</h:form>
</f:view>
</BODY>
</HTML>
on this page . I press any command_button, then press web browser's refresh button,
I find previous command_button repeat ed execute
if I press delete command_button , delete one record from database. then press web browser's refresh
button. #{operatorBean.delete} execute again as a result delete two record.
How can I do? press web browser's refresh button . not delete one record.
thank s

try use </redirect> for navigation-case.

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package webbrowser;
import java.net.*;
import java.io.*;
import java.util.*;
import javax.swing.*;
public class BrowserFrame extends javax.swing.JFrame {
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    public BrowserFrame() {
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     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">
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        jButton1.setEnabled(false);
        jButton2.setText("Forth");
        jButton2.setEnabled(false);
        jButton3.setText("Stop");
        jButton3.setEnabled(false);
        homeButton.setText("Home");
        homeButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                homeButtonActionPerformed(evt);
        refreshButton.setText("Refresh");
        refreshButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                refreshButtonActionPerformed(evt);
        addressComboBox.setEditable(true);
        addressComboBox.addItemListener(new java.awt.event.ItemListener() {
            public void itemStateChanged(java.awt.event.ItemEvent evt) {
                addressComboBoxItemStateChanged(evt);
        addressComboBox.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                addressComboBoxActionPerformed(evt);
        jLabel1.setText("Browser status: ");
        statusLabel.setText("Current status");
        pageLoadProgressBar.setBorder(javax.swing.BorderFactory.createEtchedBorder());
        fileMenu.setText("File");
        fileMenu.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                fileMenuActionPerformed(evt);
        openFileMenuItem.setLabel("Open File...");
        openFileMenuItem.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                openFileMenuItemActionPerformed(evt);
        fileMenu.add(openFileMenuItem);
        exitMenuItem.setLabel("Exit");
        fileMenu.add(exitMenuItem);
        menuBar.add(fileMenu);
        viewMenu.setText("View");
        viewMenu.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                viewMenuActionPerformed(evt);
        historyMenuItem.setLabel("History");
        viewMenu.add(historyMenuItem);
        pageSourceMenuItem.setLabel("Page Source");
        viewMenu.add(pageSourceMenuItem);
        menuBar.add(viewMenu);
        toolsMenu.setText("Tools");
        preferencesMenuItem.setLabel("Preferences");
        toolsMenu.add(preferencesMenuItem);
        menuBar.add(toolsMenu);
        helpMenu.setText("Help");
        aboutMenuItem.setLabel("About");
        helpMenu.add(aboutMenuItem);
        menuBar.add(helpMenu);
        setJMenuBar(menuBar);
        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
                .add(jButton1)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jButton2)
                .add(6, 6, 6)
                .add(refreshButton)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jButton3)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(homeButton)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(addressLabel, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 56, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(addressComboBox, 0, 568, Short.MAX_VALUE)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(goButton))
            .add(jScrollPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 1008, Short.MAX_VALUE)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jLabel1)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(statusLabel, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 339, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 470, Short.MAX_VALUE)
                .add(pageLoadProgressBar, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(goButton)
                    .add(jButton1)
                    .add(jButton2)
                    .add(homeButton)
                    .add(jButton3)
                    .add(refreshButton)
                    .add(addressLabel)
                    .add(addressComboBox, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jScrollPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 601, Short.MAX_VALUE)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
                    .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                        .add(jLabel1)
                        .add(statusLabel, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 15, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                    .add(pageLoadProgressBar, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)))
        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-1016)/2, (screenSize.height-724)/2, 1016, 724);
    }// </editor-fold>
    private class RetrievePageTask extends SwingWorker<Void, URL> {
        private String address = null;
        RetrievePageTask(String address) {
            this.address = address;
            pageLoadProgressBar.setIndeterminate(true);
        public String getAddress() {
            return address;
        public void setAddress(String newAddress) {
            address = newAddress;
        protected Void doInBackground() {
            URL url = null;
            try {
                url = new URL(address);
                publish(url);
            catch(MalformedURLException exc) {
                System.out.println(exc);
            catch(IOException exc) {
                System.out.println(exc);
            return null;
        protected void process(List<URL> url) {
            try {
                System.out.println("\nBefore setting the editorPane");
                pageEditorPane.setPage(url.get(url.size() - 1));
            catch(IOException exc) {
                System.out.println(exc);
            String url_str = url.get(url.size() - 1).toString();
            url_str = url_str.toLowerCase(); // URL string is turned in lower case
            addressComboBox.setSelectedItem(url_str);
            addUrlToAddressComboBox(url_str);
            pageLoadProgressBar.setIndeterminate(false);
    private void openFileMenuItemActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
    private void viewMenuActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
    private void fileMenuActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
    private void refreshButtonActionPerformed(java.awt.event.ActionEvent evt) {
    // Action performed when homeButton's Action Listener listens to an event. This
    // event is passed here as a parameter (evt). The selected item of the addressComboBox is
    // set to be the homePage. The browser goes to the home page.
    private void homeButtonActionPerformed(java.awt.event.ActionEvent evt) {
        addressComboBox.setSelectedItem(homePage);
    // This method loads the URL history from the history.txt file into the vector and into the
    // addressComboBox.
    private void loadUrlsFromHistoryFile() {
        BufferedReader inputStream = null;
        addressComboBox.setSelectedItem(homePage);
        try {
            inputStream = new BufferedReader(new FileReader("history.txt"));
            String tmp;
            while((tmp = inputStream.readLine()) != null) {
                // Adding url to history_mem vector
                historyMem.add(tmp);
                // Adding url to addressComboBox
                addressComboBox.addItem(tmp);
        catch(IOException exc) {
            System.out.println(exc);
    private void addressComboBoxItemStateChanged(java.awt.event.ItemEvent evt) {
        // Get the affected item
        Object item = evt.getItem();
        if(evt.getStateChange() == java.awt.event.ItemEvent.SELECTED) {
            // Item was just selected
            System.out.println("\nItem: " + item + " was just selected");
            if(item.toString().equalsIgnoreCase(""))
                return;
            RetrievePageTask retrievePageTask = new RetrievePageTask(item.toString());
            retrievePageTask.execute();
        else if(evt.getStateChange() == java.awt.event.ItemEvent.DESELECTED) {
            // Item is no longer selected
            System.out.println("\nItem: " + item + " is no longer selected");
    // Action performed when an event occurs in the addressComboBox (eg Pressing enter
    // after typing the address).
    private void addressComboBoxActionPerformed(java.awt.event.ActionEvent evt) {
        if ("comboBoxEdited".equals(evt.getActionCommand())) {
            // User has typed in a string; only possible with an editable combobox
            goButtonActionPerformed(evt);
        else if ("comboBoxChanged".equals(evt.getActionCommand())) {
            // User has selected an item; it may be the same item
    // Action performed when goButton's Action Listener listens to an event. This
    // event is passed here as a parameter (evt). When a valid URL is inserted, the
    // pageEditorPane is set to that URL.
    private void goButtonActionPerformed(java.awt.event.ActionEvent evt) {
        // 6 spaces added to the address. This is done for control reasons. Below we
        // use substring which causes exception when those spaces do not exist.
        String address = addressComboBox.getSelectedItem() + "      ";
        if(addressComboBox.getSelectedItem() == null || address.equalsIgnoreCase("      ") || address.equalsIgnoreCase("http://      ")) {
            JOptionPane.showMessageDialog(null, "No address specified.", "No address", javax.swing.JOptionPane.ERROR_MESSAGE);
        else {
            if(!address.substring(0, 7).equalsIgnoreCase("http://"))
                address = "http://" + address;
                RetrievePageTask retrievePageTask = new RetrievePageTask(address);
                retrievePageTask.execute();
    // Action performed when closing the form window
    private void formWindowClosing(java.awt.event.WindowEvent evt) {
        try {
            addUrlsToHistoryFile(historyMem);
        catch(IOException exc) {
            System.out.println(exc);
    /* This method is used to handle the case in which the user clicks on a hyperlink.
     In this case the pageEditorPane must present the contents of the URL that was
     clicked. This URL is retrieved from the evt object (which is a parameter to this
     method) with the method getURL().
    private void pageEditorPaneHyperlinkUpdate(javax.swing.event.HyperlinkEvent evt) {
        if(evt.getEventType() == javax.swing.event.HyperlinkEvent.EventType.ACTIVATED) {
             RetrievePageTask retrievePageTask = new RetrievePageTask(evt.getURL().toString());
            retrievePageTask.execute();
    // This method adds the visited URLs to the addressComboBox's item list. It takes as a
    // parameter the URL which is going to be added. If the URL is already in the list, then
    // it is not added again.
    private void addUrlToAddressComboBox(String url_str) {
        // number of items in the combo box's list
        int itemCount = addressComboBox.getItemCount();
        for(int i = 0; i < itemCount; i++) {
            if(url_str.equalsIgnoreCase((String)addressComboBox.getItemAt(i)))
                return;
        addressComboBox.addItem(url_str);
        historyMem.add(url_str);
    // This method adds the visited URLs to the history file. It takes as a parameter the URL
    // which is going to be added.
    private void addUrlsToHistoryFile(Vector url_history) throws IOException {
        PrintWriter outputStream = null;
        try {
            outputStream = new PrintWriter(new FileWriter("history.txt"));
            for(int i = 0; i < url_history.size(); i++)
                outputStream.println((String)url_history.get(i));
        finally {
            if(outputStream != null) {
                outputStream.close();
     * @param args the command line arguments
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                BrowserFrame surfRider = new BrowserFrame();
                surfRider.setVisible(true);
    // Variables declaration - do not modify
    private javax.swing.JMenuItem aboutMenuItem;
    private javax.swing.JComboBox addressComboBox;
    private javax.swing.JLabel addressLabel;
    private javax.swing.JMenuItem exitMenuItem;
    private javax.swing.JMenu fileMenu;
    private javax.swing.JButton goButton;
    private javax.swing.JMenu helpMenu;
    private javax.swing.JMenuItem historyMenuItem;
    private javax.swing.JButton homeButton;
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JMenuBar menuBar;
    private javax.swing.JMenuItem openFileMenuItem;
    private javax.swing.JEditorPane pageEditorPane;
    private javax.swing.JProgressBar pageLoadProgressBar;
    private javax.swing.JMenuItem pageSourceMenuItem;
    private javax.swing.JMenuItem preferencesMenuItem;
    private javax.swing.JButton refreshButton;
    private javax.swing.JLabel statusLabel;
    private javax.swing.JMenu toolsMenu;
    private javax.swing.JMenu viewMenu;
    // End of variables declaration
    // Variables decleration - able to modify
    private Vector<String> historyMem = new Vector<String>();
    private String homePage = "http://www.kaissa.gr";
    // End of variables decleration
    // PUBLIC METHODS
    // Get and Set methods for the private variables declared above
    public Vector getHistoryMem() {
        return historyMem;
    public void setHistoryMem(Vector<String> newHM) {
        historyMem = newHM;
    public String getHomePage() {
        return homePage;
    public void setHomePage(String newHP) {
        homePage = newHP;
}

Could not web-browsing via my N95

Last night, when I try to use my N95 for web-browsing via wireless network, I discovered that whatever how many times I try to click on the "world icon" from my cell, it can't show up the web-browsing mode anymore.
Eventually, I hv tried to switch off my cell, and re-start it again. But still, the problem is still here.
So does anyone have this experience before? Or the only way to fix this problem is update the firmware to V12?
Thanks
MikeMessage Edited by mikechan929 on 11-Oct-200710:12 PM
Message Edited by mikechan929 on 11-Oct-200710:14 PM

What kind of VPN software are you using on your Nokia N73 phone?
Chances are that you are using:
- SymVPN from www.telexy.com
- or NCP VPN from www.ncp-e.com
- or Nokia Mobile VPN (mVPN) from www.nokia.com
I am successfully using SymVPN on Nokia 5800 for Web browsing, MailForExchange, connecting Intranet and making VoIP calls over VPN.
About your problem with WEB browsing over VPN connection. I saw a comment in FAQ section for SymVPN, saying that for some Nokia phones and firmware versions, users need to make some kind of refresh for web page after first usage of standard WEB browser with VPN connection, after that all should be fine. Probably this trick will work for you too.
Couple weeks ago I have tried Opera Mini over VPN and didn't notice any problem.
On Nokia 5800 I can access VPN Access Point via Destination folder where I keep my VPN connections created in SymVPN. I guess there is no Destinations on your Nokia N73 and VPN Access Point should be available for selection in the same place where regular Access Points are.

About web browser's refresh

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