JSF :: Updating Session Value

Apr 29, 2014

I am using JSF2 with Primefaces. Here is my business requirement-Hidden field on JSF page should take the value from the session object that is set in managed bean. Session object is updated every time when the user submits the page. I am able to update the session object in the managed bean and able to get the value in the hidden field first time and after that i see the same value in the hidden field even though session object has different value. Here is the hidden field: <h:inputHidden id="xyz" value="xyz"/> i tried using sessionScope but still didn't work.

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Servlets :: Updating Session Value But Same Session In JSP Page Not Updated

Jul 8, 2014

I am developing a e-commerce college project, here i add the items in the cart(a div tag in the jsp page) via servlet by creating sessions,

flow control: shopping jsp (when user wants to add an item in the cart) --> item servlet (which is used to create session and synchronized it) --> cart servlet(which is used to add items in the arraylist and show them in the shopping.jsp's div tag + it also sets the total purchase amount in the session variable "totalpurchase")

now after that user wants to proceed to checkout, here i use the onclick event to check the minimumshopping amount must be less than the totalpurchase (totalpurchase which i had setted in the session),but my jsp page is unable to rechognise the updated value of the totalpurchase, yes, if i reload the page, it rechognises the new updated value of the totalpurchase? but i want it to rechognise the updated total purchase value, without reloading he jsp page..

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JSP :: Page Directive Attribute Session False - Yet Session Created

Feb 26, 2014

May be I did not understand the meaning and usage of attribute "session" in page directive. My understanding is if session=false, in page directive, then the JSP page will not participate in the session. However, I have my welcomepage as below:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1" session="true"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
........
.......
<%= session %>
<c:out value="${pageContext.request.session}"/>

if I choose session=true, then both ways of accessing session works , which means the JSP page participated in the session.

But if I change the session=false, then <%= session %> fails, but <c:out value="${pageContext.request.session}"/> does not fail.

how can c:out still show the session, when session = false

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Servlets :: Can Access Session Object Even Session Is Time Out

Jun 4, 2014

Can I access the session object even session has been expired? I need to check whether session is expired or not for each request.The session invalidation is set null the session object. What I concluded, session time out I can access session object but session invalidation I can not access session object. How can I find the session time out by using session object?

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Web Services :: Rest Session Not Getting Invalidated After Invalidating UI Session?

Dec 17, 2014

I have 2 war in 1 EAR.

War A corresponds to UI

War B corresponds to Rest

1) From War A, I login to the application and then fetch some users that is a rest call. I get the response back from rest in json form that ui consumes and display the data on page.

2) Now I click on the logout link from ui jsp. This logs out the session from Ui. I use <form data-dojo-type="dijit/form/Form" based logout.

3) I then go to the proxy (using burp) and manually request the rest call which I made in step no 1), the rest gives the response back with the same json object returned in step no 1) This shows that the logout action on step 2) is invalidated the session from War A (ui war) but the session or cookie based from WAR B (rest war) is not invalidated.

Expected outcome:After I Logout from War A(ui war), the session must also get invalidated from war B (rest war) and manually request from proxy should not get the same response object as received in step 1)

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Updating Value In JTextPane

Feb 20, 2015

I have a jTextPane set up and a panel with radioButtons. My jTextPane displays the contents of a text file I have chosen. The 3rd line, 4th index, displayed in my jTextPane specifies a value of type int. When I click my radioButton, I would like that value to increase by 1. So far, I have the following code. I tried to pane.setText(value + 1), but that doesn't seem to work. How do I update the value and display the updated value in jTextPane?

My code :
 
private final ActionListener actionListen = new ActionListener() {  
for(String line: pane.getText().split("")){     String lineThree = line[3];    
int value =  lineThree.charAt(4);     if(radioButton.isSelected()){      
pane.setText(value+1);     }   }};

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EJB / EE :: Session Bean Must Not Extend Another Session Bean?

Nov 9, 2014

I have tried this example ([URL].../) with CarDao extending the BaseDao, it works like a charm.However, from the CarDao class, my NetBeans underlined the class name “CarDao” with the error message “A session bean must not extend another session bean.” But I can compile, deploy and run the application without any problem.

I have also heard that a session bean cannot extend another session bean, but why it works here?

I am using Java EE 6, NetBeans 8.0.1 and WebLogic 12c for this code testing.

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Interface Not Updating Properly

Mar 20, 2015

The program runs well , it adds the applet but it dosn't update the interface unless I press "_"(Minimize) . To be more clear , the object paints a spring wich goes through 4 stages , it is added to the JFrame but it dosn't uptade until I minimize the frame , that is when it goes to the next stage .

The main class which calls the spring to be added to the frame :

public class principal implements ActionListener ,Runnable{
JTextField field;
JFrame frame;
private class Action implements ActionListener {
public void actionPerformed(ActionEvent event) {
  frame.repaint();

[Code] .....

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GUI JComboBox With Updating Jlabel

Oct 18, 2014

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

[Code]....

I am trying to Make A GUI which has a Jcombo box i also want it to have a jlabel that up dates depending on which option the user selects from the JcomboBox

for exampl if i select lion i want it to say you chose lion on the Jlabel and if i choose ostrich i want it to say ostrich and so on

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JSF :: Updating View From AJAX

Sep 26, 2014

I have two images. I want to be able to click them and kick off a call to a listener in Java to change a value in the bean. I also want the view to update my dropdown (labeled "menuModel") to either be rendered or not, depending on which image I click. Alternatively, I would be fine with the dropdown simply being disabled and enabled for the same criteria.

So far, the listener kicks off fine, and the value gets updated correctly in the bean. However, the view never gets updated. I have tried this a hundred different ways, but nothing seems to work. If I hit refresh on my browser, the view updates. But I want it to do it automatically.

I am using standard JSF 2.1.

<div style="font-family: Verdana; font-size: 10pt; color: #FFFFFF">
<h2>Calibrations</h2>
<h:form id="tunerSelectionForm" style="color: #000000">
<h:commandLink>

[Code] .....

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JComboBox Is Not Visually Updating

Jun 15, 2014

I have loaded the combo box at starting of program.When i am adding the element to combo box through database it's not updating visually.But the inserted data is successfully loaded in List.

void update_Attan() {
DefaultComboBoxModel nm = new DefaultComboBoxModel(new StudentMethods().update_combo_AttendanceType());
cmbStdAttType.setModel(nm);
}

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Array Not Updating As A Heap?

Sep 25, 2014

When I add an element to my array, I have to make sure that it stays a heap, ie every child is smaller than its parent. However the method that I am using for this, trickling up, is not updating the elements properly, it pretty much just leaves is as is.

Here is the relevant code:

public class MaxIntHeap {
int[] array;
int actualSize = 0;
public MaxIntHeap(){
array = new int[20];

[code].....

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Swing/AWT/SWT :: Why ProgressBar Not Updating

Aug 14, 2014

Why the Progress Bar is not Working in Second attempt?When i am Invoking Below Method on actionPerformed at first attempt its Working Fine but After that Its Not Working at all....

void initWait() {
go.setEnabled(false);
browse.setEnabled(false);
choice.setEnabled(false);
wait.setVisible(true);
wait.setMinimum(0);
wait.setMaximum(Info.getMp3().length);
System.out.println(Info.getMp3().length);
wait.setStringPainted(true);

[code]...

for a better Understand see this Mp3Arranger.jar or see the Whole Project SourceCode

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Updating Time In Java

Oct 22, 2014

My program is working fine. When I executes it, it shows me this:

The clock is 54 minutes over 23 (+41 seconds.

and when i press ENTER, it shows me this:

23:54:41

But then it won't show me the update. I want to update the time, for example when I started the execution the time was 23:54:41 but it must show me something like 23:54:45, because I need the current time.

I have searched the whole internet about this but I don't know how to use the "Date.update ();".

Here is my code

package p2;

import java.util.Calendar;
import java.util.Date;
import javax.swing.JOptionPane;
public class Time {
public void myTime() {
Calendar cal = Calendar.getInstance();

[Code] ....

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JSF :: Application Scoped Data Updating

Feb 18, 2015

I have an application scoped and i want to edit it from request scoped data. I use this code but application scoped data are not updating. What i am doing wrong?

Application Scoped Data

@ManagedBean
@ApplicationScoped
public class ApplicationData {
protected String contactEmail;
public String getContactEmail() {
return contactEmail;

[Code] ....

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New Instance Variable Values Not Updating

May 6, 2015

Alright, I have a JavaFX gui that is creating a new instance of data calculation to graph in a chart; however, the data is not updating each time the Platform.runLater() feature executes. Each time an event occurs, a new instance with the same variable name occurs. I use to get methods to retrieve the data I want, so shouldn't the values update each time the new instance is created? This is a very condensed version of what happens with the event, but this is what is not working correctly.

Event:
solarPlot = new SolarTracker();
solarPlot.getElevation();
solarPlot.getAzimuth();
Class constructor :
public SolarTracker() {

[Code] .....

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Game Over Method Not Updating Correctly

Sep 4, 2014

If I run this code. I can manipulate it so that X wins. When the third X button is pressed, there is no display saying that X has won and that the game is over. I have read over this code for days and still have not figured it out.

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 public class TicTacToe extends JFrame implements ActionListener, WindowListener{
 public JFrame window = new JFrame("window");

[Code] ....

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Tree Not Updating Values Properly

Aug 20, 2014

I am trying to create a tree that is like a take on 21 Questions. The tree pretty much just starts with three default values: the root/first question "Is it a mammal?", a left child "is it: human?", and a right child "is it: fish?", and then it builds off from there. It goes left for YES and right for NO. If the program guesses the wrong animal the user must enter the correct answer and a question that will distinguish the correct answer and the failed answer. That new question then becomes both the the failed answer and new answers's parent.

A little visual:

....................Is it a mammal?

...........It is: human?........Is it: fish?

*lets say it is a mammal but not human, ie a dog

Updated tree:

.....................Is it a mammal?

.....Does it have a tail?............Is it: fish?

Is it: dog?......Is it: human?

My problem is that after I update the tree 3rd time the values do not change properly. Lets say it is a mammal and its does have a tail, BUT its a cat, then, the updated question, which would now go before "is it: dog?" would be something like: "does it chase rodents?", which its left child would be cat and right would be dog.

However, when my program displays the values it would go something like this:

//first run: GOOD
Think of an animal and I will guess it!
Is it a mammal? Enter yes or no:
yes
Is it: human?
no

[Code] .....

So pretty much I can't understand what I'm doing wrong since the values in the print statements are right, but they are wrong during the actual run. Where is my error?

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Updating Limits For Random Int Values?

May 4, 2014

Write a subclass of BasicGame in which the computer asks the user to choose a whole number from 1 to 100, inclusive. The program then makes a number of guesses. After each guess, the user tells whether the guess is too high, too low, or exactly right. Once the computer "knows" what the correct number is, the computer tells the user the correct number and the number of guesses tried. Have the program ask the user after each game whether she wants to play again. Design the program so that it always guesses the correct answer by the seventh try at latest. Hint: Have two instance variables that keep track of the smallest and largest values that the guess could be (initially 1 and 100). After each wrong guess, update these smallest and largest values appropriately.This is what I have written for the assignment:

Java Code:

import javax.swing.JOptionPane;
public class GuessThatNumber extends BasicGame
{
private java.util.Random randy;
private int itsCompNumber;
private int itsHigh = 99;
private int itsLow = 1;

[code]...

The part I'm having trouble with is changing the high and low values based on the input of "too high" or "too low," which I tried in the continueGame method... When I test the game, the values for itsCompNumber aren't restricted by the user's input at all, and I'm not sure how to fix it.

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Jtable And Updating Variables In Swing

Jan 21, 2015

I am working on a project in Eclipse, and it is my first time working with swing.I have the GUI setup the way that I like it, my hang-up is how to "update" the variables in the code as they are changed.The basics of the code is that I have several different String[] that will show up in a Jtable depending upon the input of the lists I have in the GUI.

in essence,
if list1==2 && list2==3
returnedarray = array1

I would like to have the returnedarray/Jtable be updated live as the lists are manipulated. So as soon as I change my list selections to...
list1==1 && list2==3

the code would shift to the proper array...
returnedarray = array2

If making the output update live isn't a possibility how would I code a button to update the input/output giving me the proper String[]?

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Updating Specific Value In Linked List

Feb 18, 2014

I create and populate someLinkedList with '*' characters as soon as a gameLinkedList object is created, so my class is something like

private int size;
public class gameLinkedList{
private CharNode game;
public gameLinkedList(String someWord){
size=someWord.length();
for(int i=0;i<size;i++){CharNode aNode = new CharNode('p');

[Code] .....

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Updating Database - Getting Error With PrepareStatement

Feb 21, 2014

I am trying to use a prepareStatement to update the database but I am getting an error on setInt - cannot find symbol and on the executeUpdate() I get error no suitable methods for executeUpdate (no arguments)

public Products UpdateProductsDB() {
pool = ConnectionPool.getInstance();
connection = pool.getConnection();
try {
stmt = connection.prepareStatement("UPDATE products SET qtyonhand=?, qtysold=? WHERE id=?");
} catch (SQLException ex) {

[Code] ....

I used similar code for an insert statement and I don't have these problems

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JSF :: Updating Primefaces TabView Title

Mar 5, 2014

I have a TabView that generates the numbers of tabs, titles and content based off of the selected project from another field. I have managed to get it to load the proper number of tabs and content, but the first tab title displays the title of the first tab from the previous query.

The jsf is:

<h:panelGroup id="equipmentWrapper">
<p:tabView effect="blind">
<c:forEach items="#{databaseViewHandler.deviceTypes}" var="deviceType">
<p:tab title="#{deviceType.key}">
<ui:include src="#{deviceType.value}"/>

[Code] ....

And the method handling the content and number of tabs:

public DatabaseViewHandler() {
deviceTypes = new LinkedHashMap();
}
public Map<String, String> getDeviceTypes() {
return this.deviceTypes;

[Code] ....

The method findAssociatedEquipment() is called when it recieves a selected project to display.

The command button calls the update for panelGroup "equipmentWrapper". It updates fine for the ui:include and generates the correct number of tabs in the correct order.

So for example the first query might only generate one tab for an 881 device. Then if you select a project that should have a 2911 and 2960 it will correctly load both, but the title for the first tab will retain 881. Should you select a third it will have the title 2911 from the second project.

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JavaFX 2.0 :: StackedBarChart Not Updating In FXML App

Aug 14, 2014

The stacked bar chart not working with FXML and controller class. My code is given below
 
Controller class
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package javafxapplication27;
import java.net.URL;
import java.util.Arrays;
import java.util.ResourceBundle;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;

[Code]...
 
When I run this program, only the barchart populating, Stacked bar chart not displas any graph.
 
Output window

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Auto Updating JTable From Database

Feb 10, 2015

I'm doing an application which needs a JTable with data from an existing database. I need the table to periodically (I plan to use a Timer) reflect the changes made to the DB (inserting new rows, deleting or updating existing rows) without making the dirty approach of clearing the whole JTable and refilling it again, which is not nice. I need to just add/modify/delete the needed rows, not the whole table.

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SetText Method Not Updating JLabel?

Jun 26, 2015

updating a label from a different actionPerformed class. The problem is in the settext command it is not updating the JLabel.
 
public class total1 extends swingPointofSale implements ActionListener

public double totalCost;
public String totLabel;

[Code]....

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