How to make a login and logout in jsf  2.0 ?

Hello all, i am developing an web application have login and logout component. I want to check whenever end user try to open admin/index.xhtml, it will be redirected to login.xhtml. And when end user click on log out button, i will be destroy session and redirect end user to login.xhtml. But i am not sure about session in JSF 2.0. I am using netbean 6.9.1 to develop. First time, when i run my web application, i can get session back. But another time, i can't get session in my bean. Do i can use filter with JSF 2.0 to make a validate login user ? And any suggestion for my issue ? Thanks in advance!
Here is my filter with doFilter method:
RequestWrapper wrappedRequest = new RequestWrapper((HttpServletRequest) request);
ResponseWrapper wrappedResponse = new ResponseWrapper((HttpServletResponse) response);
if (wrappedRequest.getSession().getAttribute("isValidUser") != null) {
chain.doFilter(request, response);
} else {
goPage(wrappedRequest, wrappedResponse, "/faces/enduser/index.xhtml");
And here is my bean with login and log out method:
public String validUser() {
try {
if (iAccBO != null) {
Utilities utilities = new Utilities();
Account account = new Account();
account.setAccName(getAccName());
account.setPassword(utilities.encode(getPassword()));
if (iAccBO.validUser(account)) {
setAccName("");
setPassword("");
return "/admin/index";
} else {
FacesContext fc = FacesContext.getCurrentInstance();
fc.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR, "invalid username or password", ""));
return "login";
} catch (Exception ex) {
ex.printStackTrace();
Logger.getLogger(AccountBean.class.getName()).log(Level.SEVERE, null, ex);
return null;
public String Logout() {
try {
servletRequest.getSession().invalidate();
return "../login";
} catch (Exception e) {
e.printStackTrace();
return "";
Best Regards,
Coy.

I looked up it but it seem not work with me. Almost example which i found is run on Glass Fish. But I am running on TomCat server of Netbeans 6.9.1. Can someone give me another suggestion ?
Thanks in advance!
Best Regards,
Coy.

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    hi
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    i completed except logout.jsp page
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    This is part of your filter class now you need login.jsp page
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                                        <tr>
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                                            <td height="15"></td>
                                            <td height="15"></td>
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                                            <td align="left"  height="30"><input type="text" name="USERNAME" value="" size="35"  /></td>
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    </html>And you need loginServlet.java
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    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import javax.servlet.http.HttpSession;
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            String password = request.getParameter("PASSWORD");
            if (username == null || username.length() == 0) {
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  • Calculating Login and Logout Times - need help

    Hi everyone. I have the first part of this code and can't seem to figure out the time calculation part. What it is - create a code that asks for a user name or social security number, then the person enters up to 6 login and logout times for the day. They also have the option to enter personal time or sick time (neither of which can be over 8 hours). I have all of that complete, but I can't figure out how to get the in and out times and the leave times to calculate. I have 3 pieces of code - here they are:
    Hours:
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         int regularminutesInt = 0;
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         int overtimeminutesInt = 0;          
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              GregorianCalendar time2 = new GregorianCalendar(2003, 8, 1, temphoursout, tempminutesout, 0);
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              overtimehoursInt = overtimehoursInt + (Integer.parseInt(Long.toString(tempovertimeLong)) / 3600);
              overtimeminutesInt = overtimeminutesInt + (Integer.parseInt(Long.toString(tempovertimeLong)) / (3600 * regularhoursInt));     }
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         public int getOvertimeMinutes()
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    Employee:
    public class Employee
         //define states of employee
         String nameString = "";
         String ssnString = "";
         double payrateDouble = 0;
         double hoursworkedDouble = 0;
         double overtimehoursDouble = 0;
         double sickleaveDouble = 0;
         double personalleaveDouble = 0;
         double totalpayDouble = 0;
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         public void setName(String name)
              nameString = name;
         public String getName()
              return nameString;
         //set and get employee ssn
         public void setSsn(String ssn)
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         public String getSsn()
              return ssnString;
         //set and get employee payrate
         public void setPayRate(double payrate)
              payrateDouble = payrate;
         public double getPayRate()
              return payrateDouble;
         //set and get employee hours worked
         public void setHoursWorked(double hoursworked)
              hoursworkedDouble = hoursworked;
         public double getHoursWorked()
              return hoursworkedDouble;
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         public void setOverTime(double overtime)
              overtimehoursDouble = overtime;
         public double getOverTime()
              return overtimehoursDouble;
         //set and get employee sick leave hours
         public void setSickLeave(double sickleave)
              sickleaveDouble = sickleave;
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              return sickleaveDouble;
         //set and get employee sick leave hours
         public void setPersonalLeave(double personalleave)
              personalleaveDouble = personalleave;
         public double getPersonalLeave()
              return personalleaveDouble;
         //get employees total pay
         public double getTotalPay()
              //calculate regular pay
              totalpayDouble = payrateDouble * hoursworkedDouble;
              //add in any over time pay
              totalpayDouble = totalpayDouble + payrateDouble * 1.5 * overtimehoursDouble;
              //add in any sick time pay
              totalpayDouble = totalpayDouble + payrateDouble * sickleaveDouble;
              //add in any personal leave time pay
              totalpayDouble = totalpayDouble + payrateDouble * personalleaveDouble;
              return totalpayDouble;
    Entry Screen:
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    import java.awt.event.*;
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    import java.util.*;
    import java.text.*;
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         double payrateDouble = 10.00;
         //store ssn and names to ssnString
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    JLabel ssnLabel;
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    JLabel timeLabel;
    JLabel inLabel;
    JLabel outLabel;
    JTextField in1TextField;
    JTextField in2TextField;
    JTextField in3TextField;
         JTextField in4TextField;
         JTextField in5TextField;
    JTextField in6TextField;
    JTextField out1TextField;
    JTextField out2TextField;
    JTextField out3TextField;
    JTextField out4TextField;
    JTextField out5TextField;
    JTextField out6TextField;
    JLabel sickLabel;
    JTextField sickTextField;
    JTextField personalTextField;
    JLabel personalLabel;
    JButton okButton;
    JButton clearButton;
    JLabel day1Label;
    JLabel day2Label;
    JLabel day3Label;
    JLabel day4Label;
    JLabel day5Label;
    JLabel day6Label;
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              EntryScreenLayout customLayout = new EntryScreenLayout();
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              titleLabel = new JLabel("Employee Payroll System");
    add(titleLabel);
    dateLabel = new JLabel("Date (MM/DD/YY):");
    add(dateLabel);
    dateTextField = new JTextField("");
    add(dateTextField);
              //set text in field to current date
              dateTextField.setText(dateString);
    ssnLabel = new JLabel("SSN (Numbers Only):");
    add(ssnLabel);
    ssnTextField = new JTextField("");
    add(ssnTextField);
    timeLabel = new JLabel("Hours Worked (hhmm)");
    add(timeLabel);
    inLabel = new JLabel("In:");
    add(inLabel);
    outLabel = new JLabel("Out");
    add(outLabel);
    in1TextField = new JTextField("");
    add(in1TextField);
    in2TextField = new JTextField("");
    add(in2TextField);
    in3TextField = new JTextField("");
    add(in3TextField);
    in4TextField = new JTextField("");
    add(in4TextField);
    in5TextField = new JTextField("");
    add(in5TextField);
    in6TextField = new JTextField("");
    add(in6TextField);
    out1TextField = new JTextField("");
    add(out1TextField);
    out2TextField = new JTextField("");
    add(out2TextField);
    out3TextField = new JTextField("");
    add(out3TextField);
    out4TextField = new JTextField("");
    add(out4TextField);
    out5TextField = new JTextField("");
    add(out5TextField);
    out6TextField = new JTextField("");
    add(out6TextField);
    sickLabel = new JLabel("Sick Leave Used:");
    add(sickLabel);
    sickTextField = new JTextField("");
    add(sickTextField);
    personalTextField = new JTextField("");
    add(personalTextField);
    personalLabel = new JLabel("Personal Leave Used:");
    add(personalLabel);
         okButton = new JButton("Ok");
         add(okButton);
              okButton.addActionListener(this);
         clearButton = new JButton("Clear");
         add(clearButton);
              clearButton.addActionListener(this);
         day1Label = new JLabel("Day 1:");
         add(day1Label);
         day2Label = new JLabel("Day 2:");
         add(day2Label);
    day3Label = new JLabel("Day 3:");
    add(day3Label);
    day4Label = new JLabel("Day 4:");
    add(day4Label);
    day5Label = new JLabel("Day 5:");
    add(day5Label);
    day6Label = new JLabel("Day 6:");
              add(day6Label);
              //set the size of the applet window as listed in the EntryScreenLayout class
              setSize(getPreferredSize());
         public void actionPerformed(ActionEvent e)
              //get the source object
              Object source = e.getSource();
              //perform if OK button was presses      
              if(source == okButton)
                   int[][] inouttimes = new int[1][5];
                   boolean matchBoolean = false;
                   boolean timeError = false;
                   int locationInt = 0;
                   double[] leavehours = new double[1];
                   String messageString = "";
                   //get the text from the ssnTextField and store to inputString
                   String inputString = ssnTextField.getText();
                   //check to see if inputString matches ssnString array
                   for(int i = 0; i < 6; ++i)
                        //if a match assign variables
                        if (inputString.equals(ssnString[0]))
                             matchBoolean = true;
                             locationInt = i;
                             break;
                        //if not a match
                        else
                             matchBoolean = false;
                   }//end for i
                   //if a SSN match is true than display the name, SSN, total hours, overtime hours, and total pay for hours worked.
                   if (matchBoolean == true)
                        //get the check in/out times, if blank assign a zero
                        Employee temp = new Employee();
                        temp.setName(ssnString[1][locationInt]);
                        temp.setSsn(ssnString[0][locationInt]);
                        temp.setPayRate(payrateDouble);
                        temp.setSickLeave(Double.parseDouble(sickTextField.getText()));
                        temp.setPersonalLeave(Double.parseDouble(personalTextField.getText()));
                        /*inouttimes[0][0] = Integer.parseInt(in1TextField.getText());
                        inouttimes[1][0] = Integer.parseInt(out1TextField.getText();
                        inouttimes[0][1] = Integer.parseInt(in2TextField.getText();
                        inouttimes[1][1] = Integer.parseInt(out2TextField.getText();
                        inouttimes[0][2] = Integer.parseInt(in3TextField.getText();
                        inouttimes[1][2] = Integer.parseInt(out3TextField.getText();
                        inouttimes[0][3] = Integer.parseInt(in4TextField.getText();
                        inouttimes[1][3] = out4TextField.getText();
                        inouttimes[0][4] = in5TextField.getText();
                        inouttimes[1][4] = out5TextField.getText();
                        inouttimes[0][5] = in6TextField.getText();
                        inouttimes[1][5] = out6TextField.getText();
                        for (int x = 0; x < 2; ++x)
                             for (int y = 0; y < 2; ++y)
                                  String temp = String.valueOf(inouttimes[x][y]);
                                  if (temp.equals(""))
                                       inouttimes[x][y] = 0;
                                  if (inouttimes[x][y] < 0 && inouttimes[x][y] > 2400)
                                       timeError = true;          
                                       break;
                             if (timeError = true)
                                  break;
                        messageString = temp.getName() + "\n" + temp.getSsn() + "\n" + temp.getTotalPay();
                   JOptionPane.showMessageDialog(null, messageString);
                   }//if (matchBoolean == true)
                   //if SSN match is false then display error message
                   else
                        JOptionPane.showMessageDialog(null, "There is no listing under that Social Security Number.\n" +
                             "Please verify and re-enter.");                    
              }//end if(source == okButton)
              //perform if the Clear button was pressed
              if(source == clearButton)
                   //clear all the textfields
                   dateTextField.setText("");
                   ssnTextField.setText("");
                   in1TextField.setText("");
                   out1TextField.setText("");
                   in2TextField.setText("");
                   out2TextField.setText("");
                   in3TextField.setText("");
                   out3TextField.setText("");
                   in4TextField.setText("");
                   out4TextField.setText("");
                   in5TextField.setText("");
                   out5TextField.setText("");
                   in6TextField.setText("");
                   out6TextField.setText("");
                   sickTextField.setText("");
                   personalTextField.setText("");
                   //set text in field to current date
                   dateTextField.setText(dateString);
         public static void main(String args[])
              //create new entryscreen object called applet
              EntryScreen applet = new EntryScreen();
         //create new frame for applet called window
              Frame window = new Frame("EntryScreen");
         window.addWindowListener(new WindowAdapter()
                   public void windowClosing(WindowEvent e)
                   //close the applet           
                        System.exit(0);
              //initiate the applet
              applet.init();
    window.add("Center", applet);
    window.pack();
    window.setVisible(true);
    //create entryscreenlayout custom class to position controls on applet screen
    class EntryScreenLayout implements LayoutManager {
    public EntryScreenLayout() {
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    public void removeLayoutComponent(Component comp) {
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    dim.height = 487 + insets.top + insets.bottom;
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