How to execute a method when page is loaded
hi ,
I have a custom method in backing bean of a .jspx page. I want to execute it by default when the .jspx page is loaded.can anyone say how to do it?
Hi,
depends on what this is doing: You can call it in a PhaseListener, or from the page using a EL reference (e.g. output textfield that shows empty) or by customizing the ADF pagelifecyce.
You may want to have a look at
http://thepeninsulasedge.com/frank_nimphius/2007/08/09/jsf-hook-into-the-javaserver-faces-page-load/
Frank
Similar Messages
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How to execute a method after page Load?
My question is very similar to what was discussed in following thread:
How to execute a method after page Load?
My requirement is that I want to run a method in backing bean of a page, immediately after the page gets loaded. In that method I want to invoke one of the method action included in the pagedef of this page, conditionally.
I tried using the approach given in the above thread, i.e to use <f:view afterPhase="#{backing_security.setPermPriv}">, but the problem is that our page is not using 'f:view' , so I explicitly added one f:view with afterPhase property set , but it is not working, page it self is not getting loaded, it is throwing the error:
Root cause of ServletException.
java.lang.IllegalStateException: <f:view> was not present on this page; tag [email protected]e8encountered without an <f:view> being processed.
at org.apache.myfaces.trinidad.webapp.UIXComponentELTag.setProperties(UIXComponentELTag.java:108)
at javax.faces.webapp.UIComponentClassicTagBase.findComponent(UIComponentClassicTagBase.java:733)
at javax.faces.webapp.UIComponentClassicTagBase.doStartTag(UIComponentClassicTagBase.java:1354)
at org.apache.myfaces.trinidad.webapp.UIXComponentELTag.doStartTag(UIXComponentELTag.java:71)
at oracle.adfinternal.view.faces.taglib.UIXQueryTag.doStartTag(UIXQueryTag.java:41)
at oracle.adfinternal.view.faces.unified.taglib.UnifiedQueryTag.doStartTag(UnifiedQueryTag.java:51)
at oracle.jsp.runtime.tree.OracleJspBodyTagNode.executeHandler(OracleJspBodyTagNode.java:50)
at oracle.jsp.runtime.tree.OracleJspCustomTagNode.execute(OracleJspCustomTagNode.java:262)
at oracle.jsp.runtime.tree.OracleJspNode.execute(OracleJspNode.java:89)
at oracle.jsp.runtimev2.ShortCutServlet._jspService(ShortCutServlet.java:89)
at oracle.jsp.runtime.OracleJspBase.service(OracleJspBase.java:29)
at oracle.jsp.runtimev2.JspPageTable.compileAndServe(JspPageTable.java:665)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:387)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:822)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:746)
Please help to resolve this issue, or am I doing anything wrong?Hi,
I assume that your view is a page fragment and here - indeed - the f:view tag cannot be used. If you use ADF then one option would be to use a custom RegionController on the binding layer to listen for the render phase to invoke the method. Another option would be to use a hidden field (output text set to display="false" and have this component value referencing a managed bean property. The managed bean property's getter method can now be used to invoke the method you want to run upon view rendering
Frank -
How to execute the method of a class loaded
Hi,
I have to execute the method of com.common.helper.EANCRatingHelper" + version
version may be 1,2, etc
if version = 1 the class is com.common.helper.EANCRatingHelper1;
Iam able to load the class using following code.But iam unable to execute the method of the above class
Can anybody help me how to execute the method of the class loaded.
Following is the code
String version = getHelperClassVersion(requestDate);
String helperClass = "com.redroller.common.carriers.eanc.helper.EANCRatingHelper" + version;
Class eancRatingHelper = Class.forName(helperClass);
eancRatingHelper.newInstance();
eancRatingHelper.saveRating(); This is not executing throwing an error no method.
ThankseancRatingHelper.newInstance();Ok, that creates an instance, but you just threw it away. You need to save the return of that.
Object helper = eancRatingHelper.newInstance();
eancRatingHelper.saveRating(); This is not executing throwing an error no method.Of course. eancRatingHelper is a Class object, not an instance of your EANCRatingHelper object. The "helper" object I created above is (though it is only of type "Object" right now) -- you have to cast it to the desired class, and then call the method on that.
Hopefully EANCRatingHelper1 and 2 share a common interface, or you're up the creek. -
How to call java method on page load?
How to call java method on page load?
ThanksHey Dan,
Well, if you want to execute a java method when page is load, you need to put the clientlistener in af:document. Let me to show you an example (I can't find my post :P),
JSPX page:
<f:view>
<af:document>
<f:verbatim>
<script>
function loadPage(event) {
alert('Hello World!');
</script>
</f:verbatim>
<af:clientListener method="loadPage" type="load"/>
</af:document>
</f:view>If you try this code you can see that when the page has been load, you recieve the alert "Hello World!".
Furthermore, this is the javascript AJAX function that let you to call a servlet:
function ajaxFunction () {
var httpRequest;
if (window.XMLHttpRequest) {
httpRequest = new XMLHttpRequest();
} else if (window.ActiveXObject) {
httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
httpRequest.overrideMimeType('text/xml');
httpRequest.onreadystatechange = function() { alertContents(httpRequest); };
httpRequest.open('GET', '/appname/servletname', false);
httpRequest.send('');
function alertContents(httpRequest) {
if (httpRequest.readyState == 4) {
if (!httpRequest.status == 200) {
alert('Request error. Http code: ' + httpRequest.status);
}Where 'appname' is your application name and 'servletname' is the name of the servlet that you want to call. Obviously, you can call any URL ;)
JVN -
How to execute a method from String object?
I have some methods in String objects, example:
String methodOne = "someMethod1";
String methodTwo = "someMethod2";
public void someMethod1() {
public void someMethod2() {
How can i execute that methods, when the method names i have only in String objects?You can get the method directly from the name and parameter types if you want to avoid using the loop:public class Foo27 {
public static void main (String[] args) throws Exception{
String methodOne = "someMethod1";
String methodTwo = "someMethod2";
Object foo = new Foo27();
Method method1 = foo.getClass().getMethod(methodOne, new Class[]{});
method1.invoke(foo, null);
Method method2 = foo.getClass().getMethod(methodTwo, null);
method2.invoke(foo, null);
public void someMethod1() {
System.out.println("someMethod1");
public void someMethod2() {
System.out.println("someMethod2");
}The parameter types are required as there could be more than one method with the same name.
For somereason when I tried to create a new Method object and invoke it, an exception was thrownThere isn't a public constructor for Method, so how did you create a new one?
Pete -
Prevent Queries When Page First Loads
Hi,
How to Prevent Queries When Page First Loads: in this case #{!adfFacesContext.initialRender}
didn’t works. and Jdeveloper 11.1.1.2.0.
Please help me ..
Thanks
AnupHi Mohammad Jabr,
I have also set refresh property but not working..
i have follow the link refer https://blogs.oracle.com/shay/entry/preventing_queries_when_page_f
I want to prevent user to search without selecting any criteria.
but this is not working..
Please give any other solution..
Thanks
Anup
Edited by: 888679 on Mar 13, 2013 10:46 PM -
Every time I start Firefox, the upgrade/signup page is displayed in one tab while google, my start-up page is displayed in another. How can I stop the firefox page from loading every time?
See these articles for some suggestions:
* https://support.mozilla.com/kb/Firefox+has+just+updated+tab+shows+each+time+you+start+Firefox
* https://support.mozilla.com/kb/How+to+set+the+home+page - Firefox supports multiple home pages separated by '|' symbols
* http://kb.mozillazine.org/Preferences_not_saved -
How to execute applets method from jsp?
Hi ,
I have a query.I have a jsp page
on loading the jsp page the applet should be
loaded.And i have a button in my jsp page on clicking
the button a method written in the applet class should
be executed .How can i do this.Iam attaching the
classes also.There r two java files.One is EXPosApplet.java and other is EXPos.java
In the EXPosApplet.java i have a method called
RunNotepad().This method should be executed when i click the
button in my jsp page.Pls provide me with some code to load the applet and execute the method of applet.It is a bit urgent.
Thanks
Naveen
The following is my
EXPos.java class.Following this is my EXPosApplet.java class.
EXPos.java
package SumberPutra.External;
import java.io.*;
public class EXPos extends Object {
* Constructor
public EXPos() {
private static void RunIt(String fileName){
try {
Runtime.getRuntime().exec(fileName);
catch (SecurityException e) {
System.out.println("ExecFile: caught security exception: " + e) ;
catch (IOException ioe) {
System.out.println("ExecFile: caught i/o exception: " + ioe);
public void RunNotepad(){
String fname = "notepad.exe";
RunIt(fname);
EXPosApplet.java
package SumberPutra.External;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class EXPosApplet extends JApplet {
boolean isStandalone = false;
private EXPos expos = new EXPos();
JButton jButton1 = new JButton();
JLabel jLabel1 = new JLabel();
* Constructs a new instance.
* getParameter
* @param key
* @param def
* @return java.lang.String
public String getParameter(String key, String def) {
if (isStandalone) {
return System.getProperty(key, def);
if (getParameter(key) != null) {
return getParameter(key);
return def;
public EXPosApplet() {
* Initializes the state of this instance.
* init
public void init() {
try {
jbInit();
catch (Exception e) {
e.printStackTrace();
private void jbInit() throws Exception {
this.setSize(new Dimension(400, 156));
jButton1.setText("jButton1");
jLabel1.setText("jLabel1");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
jButton1_actionPerformed(e);
this.getContentPane().add(jButton1, BorderLayout.NORTH);
this.getContentPane().add(jLabel1, BorderLayout.SOUTH);
* start
public void start() {
* stop
public void stop() {
* destroy
public void destroy() {
* getAppletInfo
* @return java.lang.String
public String getAppletInfo() {
return "Applet Information";
* getParameterInfo
* @return java.lang.String[][]
public String[][] getParameterInfo() {
return null;
static {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
catch(Exception e) {
e.printStackTrace();
public void ExecNotepad(){
expos.RunNotepad();
/* void jButton1_actionPerformed(ActionEvent e) {
try
Runtime.getRuntime().exec("notepad.exe");
catch (SecurityException ex) {
// strMsg = "ExecFile: caught security exception: " + e ;
jLabel1.setText("ExecFile: caught security exception: " + ex) ;
catch (IOException ioe) {
// strMsg = "ExecFile: caught i/o exception: " + ioe;
jLabel1.setText("ExecFile: caught i/o exception: " + ioe);Iam new to java .Can u please give me the code to load the applet and execute applets method
Thankyou -
How to execute Applet method from jsp?
Hi ,
I have a query.I have a jsp page
on loading the jsp page the applet should be
loaded.And i have a button in my jsp page on clicking
the button a method written in the applet class should
be executed .How can i do this.Iam attaching the
classes also.There r two java files.One is EXPosApplet.java and other is EXPos.java
In the EXPosApplet.java i have a method called
RunNotepad().This method should be executed when i click the
button in my jsp page.Pls provide me with some code to load the applet and execute the method of applet.It is a bit urgent.
Thanks
Naveen
The following is my
EXPos.java class.Following this is my EXPosApplet.java class.
EXPos.java
package SumberPutra.External;
import java.io.*;
public class EXPos extends Object {
* Constructor
public EXPos() {
private static void RunIt(String fileName){
try {
Runtime.getRuntime().exec(fileName);
catch (SecurityException e) {
System.out.println("ExecFile: caught security exception: " + e) ;
catch (IOException ioe) {
System.out.println("ExecFile: caught i/o exception: " + ioe);
public void RunNotepad(){
String fname = "notepad.exe";
RunIt(fname);
EXPosApplet.java
package SumberPutra.External;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class EXPosApplet extends JApplet {
boolean isStandalone = false;
private EXPos expos = new EXPos();
JButton jButton1 = new JButton();
JLabel jLabel1 = new JLabel();
* Constructs a new instance.
* getParameter
* @param key
* @param def
* @return java.lang.String
public String getParameter(String key, String def) {
if (isStandalone) {
return System.getProperty(key, def);
if (getParameter(key) != null) {
return getParameter(key);
return def;
public EXPosApplet() {
* Initializes the state of this instance.
* init
public void init() {
try {
jbInit();
catch (Exception e) {
e.printStackTrace();
private void jbInit() throws Exception {
this.setSize(new Dimension(400, 156));
jButton1.setText("jButton1");
jLabel1.setText("jLabel1");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
jButton1_actionPerformed(e);
this.getContentPane().add(jButton1, BorderLayout.NORTH);
this.getContentPane().add(jLabel1, BorderLayout.SOUTH);
* start
public void start() {
* stop
public void stop() {
* destroy
public void destroy() {
* getAppletInfo
* @return java.lang.String
public String getAppletInfo() {
return "Applet Information";
* getParameterInfo
* @return java.lang.String[][]
public String[][] getParameterInfo() {
return null;
static {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
catch(Exception e) {
e.printStackTrace();
public void ExecNotepad(){
expos.RunNotepad();
/* void jButton1_actionPerformed(ActionEvent e) {
try
Runtime.getRuntime().exec("notepad.exe");
catch (SecurityException ex) {
// strMsg = "ExecFile: caught security exception: " + e ;
jLabel1.setText("ExecFile: caught security exception: " + ex) ;
catch (IOException ioe) {
// strMsg = "ExecFile: caught i/o exception: " + ioe;
jLabel1.setText("ExecFile: caught i/o exception: " + ioe);hie Naveen
I don't have time to read your code.
just telling you the way i did it.
I used javascript for this
apply onClick() event on button.
function invokeApplet() {
app = document.applets[0].methodName(param1,param2);
hope this helps
if you still face the problem
I'll look in to your code -
How to call a method when the browser is closing
Hello,
In my application I need to execute a specific treatment when the WD4A application is closing. So how can we have a handle method for this specific event.
I've seen some documentation about the "exit plugs" , and about the doonclose method of the window.. but I don't think it can be useable for me in this case.
Can you please help me
Thanks in Advance
HamzaI wrote an insert into the method i set up a break point, the program never call this code and therefore, the new row is never inserted.
But i think, it's a misunderstand.
to summarize :
I have an application in WD4A
The application is running, and then I decide to close the browser (in my case internet explorer) and before the browser close I want to execute a piece of code.
If the method wddoonclose is to be used, is there any default handler or listener to trigger it automatically on the browser closing ?
If no, how to trigger a method base on this special event .
Thx
Hamza -
How to open a Template when Pages is already open
I have just copied and pasted some text into a blank pages document. I want to convert this doc. to a letter head that I made a template for.
I would like to open the template, then copy/paste the first doc info into the template doc.
I haven't been able to figure out how to open a template when a document is already open.Sorry, P5.2, Mavericks.
I did set the preferences to New Documents> Use Template: Blank, to stop endlessly having to choose a template when I don't need one.
When I pull down File, there is no New from Template Chooser. File>New just opens another blank file.
To check, I went back and enabled "Show Template Chooser". Now it demands I choose a template whether I want to or not.
OK, it seems Apple is forcing you into either/or. I want both/and. I don't want to be forced to choose a template when 99% of the time I don't want anything but a blank file. It is a nuisance. But the occasional time I am composing something and decide it would be better off as a universal doc with letter head, I am stuck and cannot choose open a template so I can stick the material in it.
The options are lousy. Close/save the doc, reset the preferences to templates, shut down Pages, restart pages, select template, open old doc, copy/past old text into new template. Or, while the original doc is open the first time, I could go find a stored doc with the right letter head template, open it, copy/paste the previous text into the letter head doc (and delete everything else).
Neither of these options is worth a wooden nickel. Apple needs to think this one through again. Like have multiiple buttons with View on it, doing different things. At least they got rid of using the paragraph symbol for two or three different functions. -
How to execute a method on mouse move event on an Image
Hi All,
I want to execute a method on mouse move event or mouse click event to an image.
how can i achieve this?
TIA,
VishalI am not sure if commandImageLink or goImageLink solve your requirement.
But as a workaround you can use set of ClientListener and ServerListener with af:image to achieve what you need.
using then you can capture client event and convert that into server event which you can use to call a bean method.
Inside this bean you can call a web service or method binding.
My first link in previous post shows that very well....
OR
http://naive-amseth.blogspot.com/2011/02/calling-methodbindingwebservice-on.html
Amit
Edited by: amseth on Feb 15, 2011 12:25 AM -
CS6 Fluid Grids - how to make images resize when page is resized? [was: Hello]
I am new to fluid grid layouts in Dreamweaver cs6, I want to insert a GIF file on my index page but I do not know how to make it so when the page shrinks the GIF or image shrinks as well. The only code that I have found is
img, {
max-width: 100%;
But this code already exists in the css file when you create a new fluid grid based layout
img, object, embed, video {
max-width: 100%;
can anyone help a newbie please..this is my source code
<!doctype html>
<!--[if lt IE 7]> <html class="ie6 oldie"> <![endif]-->
<!--[if IE 7]> <html class="ie7 oldie"> <![endif]-->
<!--[if IE 8]> <html class="ie8 oldie"> <![endif]-->
<!--[if gt IE 8]><!-->
<html class="">
<!--<![endif]-->
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Kyle Childress Foundation</title>
<link href="boilerplate.css" rel="stylesheet" type="text/css">
<link href="/layout.css" rel="stylesheet" type="text/css">
<!--
To learn more about the conditional comments around the html tags at the top of the file:
paulirish.com/2008/conditional-stylesheets-vs-css-hacks-answer-neither/
Do the following if you're using your customized build of modernizr (http://www.modernizr.com/):
* insert the link to your js here
* remove the link below to the html5shiv
* add the "no-js" class to the html tags at the top
* you can also remove the link to respond.min.js if you included the MQ Polyfill in your modernizr build
-->
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<script src="respond.min.js"></script>
</head>
<body>
<div class="gridContainer clearfix">
<div id="animation"><img src="images/images/kyleanimation2014gif2.gif" alt="kylechildressfoundationanimation"></div>
</div>
</body>
</html>
this is my css
@charset "UTF-8";
@import url("/kyle.css");
/* Simple fluid media
Note: Fluid media requires that you remove the media's height and width attributes from the HTML
http://www.alistapart.com/articles/fluid-images/
img, object, embed, video {
max-width: 100%;
/* IE 6 does not support max-width so default to width 100% */
.ie6 img {
width:100%;
Dreamweaver Fluid Grid Properties
dw-num-cols-mobile: 5;
dw-num-cols-tablet: 8;
dw-num-cols-desktop: 10;
dw-gutter-percentage: 25;
Inspiration from "Responsive Web Design" by Ethan Marcotte
http://www.alistapart.com/articles/responsive-web-design
and Golden Grid System by Joni Korpi
http://goldengridsystem.com/
/* Mobile Layout: 480px and below. */
.gridContainer {
margin-left: auto;
margin-right: auto;
width: 87.36%;
padding-left: 1.82%;
padding-right: 1.82%;
#LayoutDiv1 {
clear: both;
float: left;
margin-left: 0;
width: 100%;
display: block;
#animation {
clear: both;
float: left;
margin-left: 0;
width: 100%;
display: block;
#image {
clear: both;
float: left;
margin-left: 0;
width: 100%;
display: block;
/* Tablet Layout: 481px to 768px. Inherits styles from: Mobile Layout. */
@media only screen and (min-width: 481px) {
.gridContainer {
width: 90.675%;
padding-left: 1.1625%;
padding-right: 1.1625%;
#LayoutDiv1 {
clear: both;
float: left;
margin-left: 0;
width: 100%;
display: block;
#animation {
clear: both;
float: left;
margin-left: 0;
width: 100%;
display: block;
#image {
clear: both;
float: left;
margin-left: 0;
width: 100%;
display: block;
/* Desktop Layout: 769px to a max of 1232px. Inherits styles from: Mobile Layout and Tablet Layout. */
@media only screen and (min-width: 769px) {
.gridContainer {
width: 88.2%;
max-width: 1232px;
padding-left: 0.9%;
padding-right: 0.9%;
margin: auto;
#LayoutDiv1 {
clear: both;
float: left;
margin-left: 0;
width: 100%;
display: block;
#animation {
clear: both;
float: left;
margin-left: 0;
width: 100%;
display: block;
#image {
clear: both;
float: left;
margin-left: 0;
width: 100%;
display: block;
the animation GIF is 700 x 908
I changed the code from max-width to just width 100% but it still did not work ,, please help -
How to use Synchronized method when creating our own controls
I don't know how to use the synchronized method when creating our own activex like controls to speed up the application.
[url http://java.sun.com/docs/books/tutorial/essential/threads/multithreaded.html] here you go
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Adf faces: execute bean method after table is loaded
Hi,
How can I execute a method after an adf table is rendered on the page?
This is what I want to do:
I have a master/detail:
- the master part contains a list of materials
- the details contains a list of customers and volumes depending on the selected material.
I tried to add totals on the details table:
- I created an output text in the footer-facet of the colums containing volumes
- I created a binding of the detail table to a CoreTable.
- I created a method in a managed bean related to this CoreTable binding, so I can browse to all rows in the table and calculate the sum.
- I then set the value of the output text to the total calculated in the managed bean.
the problem is that I don't know how to execute the calculate procedure after the data in the detail table exists.
What I tried:
- call the calculate procedure in the setCoreTable method. --> at this point, there is no data in the table and this results in a nullPointerException when the pages is loaded.
- call the calculate procedure on the valueChangeListener of the material list --> this doesn't work because totals are calculated for the previous details set.
- I tried to add the call in one of the table listeners but I cannot find a listener that is executed after data is loaded in the table...
for testing purpose only, I added a button: calculateTotals that calculates the totals. This works correctly.Hi,
if you use page fragments exposed in an ADF region, you have two options I see
1. Use a method call activity to call the managed bean
2. Use a hidden UI component that references the setter/getter exposed in a managed bean and just use this as an indication for the page fragment being loaded
Keragala
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