Ajax with swing and multithreading
i want to know ,can we use ajax with swing (multithreading)
You have asked a question that is full of buzzwords that you obviously don't understand.
The answer to your question is not going to help much.
What are you really trying to do?
Similar Messages
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Problems with SEA and Multithread library
I've try to develop a multithread sub-agent. I've call the pthread_create in agent_init() function. The thread open an UDP socket and wait for messages from other processes.
The daemon and sub-agent with it's thread start correctly (apparently) but immediately after i receive the following error:
signals_init() failed: sigset(32, SIG_IGN) failed [errno: Invalid argument(22)]
and the sub-agent stops.
Is There some incompatibilty between SEA and multithread library?
Can you help me?
ThanksHi,
You are correct, there is a patch required for the multithreading support.
The bug number is 4224980 and the synopsis is Multi-threaded support needed for SEA subagents.
This bug fix has gone into 107709-07 (Sparc Solaris 7) and is already fixed in Solaris 8 FCS. Please download this patch and after that test your agent on Solaris 7.
This is assuming you have Solaris 7(Sparc) installed and that you are using the SEA donwload that is supported on Solaris 7. If you are on Solaris 8 and then you are using the Solaris 7 binaries then also you may run into this error. So ensure you are using freshly installed Solaris 8 if you are interested in Solaris 8 and not a mixed SEA env.
Hope the above information helps.
Thanks
Sujeet (Sun-DTS) -
I need help with Applets and Multithreading
[hello all. first time poster. big fan of java.]
now to the important matter: Applets and Threads
=======================================
1) I have an applet with that implements the runnable interface, and has one thread (and a simple animation). If I try to view this applet in the applet viewer with JGrasp, it spits an insane error telling me
"java.security.AccessControlException: access denied (java.lang.RuntimePermission modifyThreadGroup)"
but, if I run the applet through a web browser, by putting it in an html document, it runs correctly, without error
What on earth is wrong, and how do I fix it?!?
2) I want to put 2 threads in my applet?
If I implement the Runnable interface, I can only have one Run() method in my applet, right?
So how do I define behaviour for 2 threads when I only have one run method in which to define the behaviour? Can I use two threads with the runnable interface, or do I have to make objects of my own defined thread classes?
3) I tried to make 2 threads in my applet by creating my own thread classes, and instantiating them in my applet (instead of implementing the runnable interface).
I still get the same insane error as I mentioned in my first point (which I expected), except now, the applet won't work even when viewed through a web browser!!
Please please help me. I am frustrated beyond belief (at what is probably a very simple problem)
I have searched and searched all over and found no answers on thisIf I try to view this applet in the applet viewer with JGrasp, it spits an insane error telling me
"java.security.AccessControlException: access denied (java.lang.RuntimePermission modifyThreadGroup)"Don't know anything about JGrasp, but it runs with pretty tight security - thats what this insane error is all about. Use the appletviewer or a browser.
If I implement the Runnable interface, I can only have one Run() method in my applet, right?Correct
So how do I define behaviour for 2 threads when I only have one run method in which to define the behaviour?
Can I use two threads with the runnable interface, or do I have to make objects of my own defined thread classes?You can create two Runnable implementations (classes) in your applet.
example (missing code)
class MyApplet extends Applet {
void doSomething() {
void doSomethingElse() {
void startThreads() {
Thread t = new Thread(new Runnable() { public void run() { doSomething();}});
t.start();
t = new Thread(new Runnable2());
t.start();
class Runnable2 implements Runnable {
public void run() {
doSomethingElse();
}If the above seems confusing, read up on anonymous and inner classes.
3) I tried to make 2 threads in my applet by creating my own thread classesTry not subclassing thread - this causes a security check -
Drawing a color string with swing and Graphics2D
hi guys,
I am trying to draw a string on a JPanel, and can do so successfully with plain boring text using drawString(string, int, int). How can I change the font and color? Thanks!Read the API for java.awt.Graphics.
db -
Mouse Right-Click menu with JTextField and swing
Hello,
I created a small app for providing an organized gui to insert data and log it to a text file. I just recently converted it to swing to improve the functionality of it and try to get away from some of the bugs I found in using regular java.awt.
So far so good, all of my complaints with regular awt are gone using swing, but I have one problem I see as a real pain.
With a TextField in java.awt you can right click and get the standard mouse-menu. The mouse menu is nice for cut/copy/paste type operations and I do not want to lose this functionality.
But with swing and JTextField I am not getting the menu. I right click in there and get nothing. My UIManager is loading the OS one (windows) and I cannot find a way to recover this feature.
Does anyone know how I can get this working?
Thanks,
LucasWell as I posted here to try and see if there was a way to recover what the OS already provides I have struggled through creating a popup menu.
I have the cut, copy, paste and selectall complete but I am struggling with the undo option. -
Problems with SwingWorker and classes in my new job, ;), can you help me?
Hi all, ;)
First of all, sorry about my poor English.
I have a problem with Swing and Threads, I hope you help me (because I'm in the firsts two weeks in my new job)
I have two classes:
Form1: Its a JPanel class with JProgressBar and JLabel inside.
FormularioApplet: (the main) Its a JPanel class with a form1 inside.
I have to download a file from a server and show the progress of the download in the JProgressBar. To make it I do this:
In Form1 I make a Thread that update the progress bar and gets the fole from the server.
In FormularioApplet (the main) I call to the method getDownloadedFile from Form1 to get the File.
THE PROBLEM:
The execution of FormularioApplet finishes before the Thread of Form1 (with download the file) download the file. Then, when I call in FormularioApplet the variable with the file an Exception: Exception in thread "AWT-EventQueue-1" java.lang.NullPointerException is generated.
First main begins his execution, then call to Form1 (a thread) then continues his execution and when the execution is finished ends the execution os Form1 and his thread.
How can I do for main class call the function and the Thread download his file after main class assign the file of return method?
How can I pass information froma class include an a main class. Form1 can't send to main (because main class made a Form1 f1 = new Form1()) any information from his end of the execution. I think if Form1 can say to main class that he finishes is job, then main class can gets the file.
I put in bold the important lines.
Note: My level of JAVA, you can see, is not elevated.
THANKS A LOT
Form1 class:
package es.cambrabcn.signer.gui;
import java.awt.HeadlessException;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.StringTokenizer;
import java.util.Vector;
import javax.swing.SwingUtilities;
public class Form1 extends javax.swing.JPanel {
//Variables relacionadas con la clase original DownloadProgressBar
private InputStream file;
private int totalCicles;
private int totalFiles;
private int currentProgress;
private SwingWorker worker;
private ByteArrayOutputStream byteArray;
private boolean done;
/** Creates new form prueba */
public Form1() {
initComponents();
this.byteArray = new ByteArrayOutputStream();
progressBar.setStringPainted(true);
//this.totalFiles = totalFiles;
currentProgress = 0;
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
// <editor-fold defaultstate="collapsed" desc=" C�digo Generado ">
private void initComponents() {
label1 = new javax.swing.JLabel();
progressBar = new javax.swing.JProgressBar();
statusLabel = new javax.swing.JLabel();
setBackground(new java.awt.Color(255, 255, 255));
setMaximumSize(new java.awt.Dimension(300, 150));
setMinimumSize(new java.awt.Dimension(300, 150));
setPreferredSize(new java.awt.Dimension(300, 150));
label1.setFont(new java.awt.Font("Arial", 1, 18));
label1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
label1.setText("Barra de progreso");
statusLabel.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
statusLabel.setText("Cargando");
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
.addContainerGap()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
.add(org.jdesktop.layout.GroupLayout.LEADING, statusLabel, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 280, Short.MAX_VALUE)
.add(org.jdesktop.layout.GroupLayout.LEADING, progressBar, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 280, Short.MAX_VALUE)
.add(org.jdesktop.layout.GroupLayout.LEADING, label1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 280, Short.MAX_VALUE))
.addContainerGap())
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(label1)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(progressBar, 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(statusLabel)
.addContainerGap(73, Short.MAX_VALUE))
}// </editor-fold>
// Declaraci�n de variables - no modificar
private javax.swing.JLabel label1;
private javax.swing.JProgressBar progressBar;
private javax.swing.JLabel statusLabel;
// Fin de declaraci�n de variables
public byte[] getDownloadedFile(String documentToSign){
//Variables locales
byte puente[] = null;
try{
//Leemos el documento a firmar
StringTokenizer st = new StringTokenizer(documentToSign, ";");
Vector<URL> fileURL = new Vector<URL>();
HttpSender sender = new HttpSender(null);
//Introducimos la lista de URLs de archivos a bajar en el objeto Vector
for(; st.hasMoreTokens(); fileURL.add(new URL(st.nextToken())));
//Para cada URL descargaremos un archivo
for(int i = 0; i < fileURL.size(); i++) {
file = sender.getMethod((URL)fileURL.get(i));
if(file == null) {
Thread.sleep(1000L);
throw new RuntimeException("Error descarregant el document a signar.");
System.out.println("Form1 Dentro de getDownloadFile, Antes de startDownload()");
//Fijamos el valor del n�mero de ciclos que se har�n seg�n el tama�o del fichero
this.totalCicles = sender.returnCurrentContentLength() / 1024;
this.progressBar.setMaximum(totalCicles);
//Modificamos el texto del JLabel seg�n el n�mero de fichero que estemos descargando
this.statusLabel.setText((new StringBuilder("Descarregant document ")).append(i + 1).append(" de ").append(fileURL.size()).toString());
statusLabel.setAlignmentX(0.5F);
*//Iniciamos la descarga del fichero, este m�todo llama internamente a un Thread*
*this.startDownload();*
*System.out.println("Form1 Dentro de getDownloadFile, Despu�s de startDownload()");*
*//if (pane.showProgressDialog() == -1) {*
*while (!this.isDone()){*
*System.out.println("No est� acabada la descarga");*
*if (this.isDone()){*
*System.out.println("Thread ACABADO --> Enviamos a puente el archivo");*
*puente = this.byteArray.toByteArray();*
*System.out.println("Form1 getDownloadFile() tama�o puente: " + puente.length);*
*else{*
*Thread.sleep(5000L);*
*// throw new RuntimeException("Proc�s de desc�rrega del document a signar cancel�lat.");*
catch (HeadlessException e) {
//javascript("onSignError", new String[] {
//(new StringBuilder("UI: ")).append(e.getMessage()).toString()});
e.printStackTrace();
catch (MalformedURLException e) {
//javascript("onSignError", new String[] {
//(new StringBuilder("CMS: ")).append(e.getMessage()).toString()});
e.printStackTrace();
catch (HttpSenderException e) {
//javascript("onSignError", new String[] {
//(new StringBuilder("CMS: ")).append(e.getMessage()).toString()});
e.printStackTrace();
catch (InterruptedException e) {
//javascript("onSignError", new String[] {
//(new StringBuilder("CMS: ")).append(e.getMessage()).toString()});
e.printStackTrace();
//System.out.println("Form1 getDownloadFile() tama�o puente: " + puente.length);
return puente;
public void updateStatus(final int i){
Runnable doSetProgressBarValue = new Runnable() {
public void run() {
progressBar.setValue(i);
SwingUtilities.invokeLater(doSetProgressBarValue);
public void startDownload() {
System.out.println("Form1 Inicio startDownload()");
System.out.println("Form1 Dentro de startDownload, antes de definir la subclase SwingWorker");
System.out.println(done);
worker = new SwingWorker() {
public Object construct() {
System.out.println("Form1 Dentro de startDownload, dentro de construct(), Antes de entrar en doWork()");
return doWork();
public void finished() {
System.out.println("Form1 Dentro de startDownload, dentro de finished(), Antes de asignar done = true");
System.out.println(done);
done = true;
System.out.println("Form1 Dentro de startDownload, dentro de finished(), Despu�s de asignar done = true");
System.out.println(done);
statusLabel.setText("Completado, tama�o del archivo: " + (byteArray.size() / 1024) + "KB");
System.out.println("Form1 Dentro de startDownload, antes de worker.start()");
worker.start();
System.out.println("Form1 Dentro de startDownload, antes de salir de startDownload");
System.out.println(done);
System.out.println("Form1 Dentro de startDownload, despu�s de worker.start()");
* M�todo doWork()
* Este m�todo descarga por partes el archivo que es necesario descargar, adem�s de actualizar
* la barra de carga del proceso de carga de la GUI.
public Object doWork() {
System.out.println("Form1 doWork() this.byteArray.size(): " + this.byteArray.size());
try {
byte buffer[] = new byte[1024];
for(int c = 0; (c = this.file.read(buffer)) > 0;) {
this.currentProgress++;
updateStatus(this.currentProgress);
this.byteArray.write(buffer, 0, c);
this.byteArray.flush();
this.file.close();
this.currentProgress = totalCicles;
updateStatus(this.currentProgress);
} catch(IOException e) {
e.printStackTrace();
System.out.println("Form1 doWork() FINAL this.byteArray.size(): " + this.byteArray.size());
//done = true;
System.out.println("AHORA DONE = TRUE");
return "Done";
public boolean isDone() {
return this.done;
FormularioApplet class (main)
package es.cambrabcn.signer.gui;
import java.awt.Color;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URL;
import java.security.Security;
import java.util.StringTokenizer;
import java.util.Vector;
import javax.swing.SwingUtilities;
import netscape.javascript.JSObject;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import sun.security.provider.Sun;
import be.cardon.cryptoapi.provider.CryptoAPIProvider;
public class FormularioApplet extends java.applet.Applet {
//Variables globales
int paso = 0;
private static final String JS_ONLOAD = "onLoad";
private static final String JS_ONLOADERROR = "onLoadError";
private static final int SIGNATURE_PDF = 1;
private static final int SIGNATURE_XML = 2;
//private String signButtonValue;
private int signatureType;
private String documentToSign;
private String pdfSignatureField;
private Vector<String> outputFilename;
private Color appletBackground = new Color(255, 255, 255);
private Vector<byte[]> ftbsigned;
* Initializes the applet FormularioApplet
public void init(){
try {
SwingUtilities.invokeLater(new Runnable() {
//SwingUtilities.invokeAndWait(new Runnable() {
//java.awt.EventQueue.invokeAndWait(new Runnable() {
public void run() {
try{
readParameters();
initComponents();
catch(FileNotFoundException e){
javascript(JS_ONLOADERROR, new String[] {
(new StringBuilder("Init: ")).append(e.getMessage()).toString()});
e.printStackTrace();
catch(IOException e) {
javascript(JS_ONLOADERROR, new String[] {
(new StringBuilder("Init: ")).append(e.getMessage()).toString()});
e.printStackTrace();
catch (Exception e) {
javascript(JS_ONLOADERROR, new String[] {
(new StringBuilder("Init: ")).append(e.getMessage()).toString()});
e.printStackTrace();
javascript(JS_ONLOAD, null);
/** This method is called from within the init() method to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
// <editor-fold defaultstate="collapsed" desc=" C�digo Generado ">
private void initComponents() {
this.setSize(350, 450);
appletPanel = new javax.swing.JPanel();
jPanel1 = new javax.swing.JPanel();
jTextField1 = new javax.swing.JLabel();
jPanel2 = new javax.swing.JPanel();
label = new javax.swing.JLabel();
jPanel3 = new javax.swing.JPanel();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
setLayout(new java.awt.BorderLayout());
appletPanel.setBackground(new java.awt.Color(255, 255, 255));
appletPanel.setMaximumSize(new java.awt.Dimension(350, 430));
appletPanel.setMinimumSize(new java.awt.Dimension(350, 430));
appletPanel.setPreferredSize(new java.awt.Dimension(350, 430));
jPanel1.setBackground(new java.awt.Color(255, 255, 255));
jPanel1.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 102, 204)));
jTextField1.setFont(new java.awt.Font("Arial", 1, 18));
jTextField1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
jTextField1.setText("SIGNATURA ELECTRONICA");
org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.add(jTextField1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 308, Short.MAX_VALUE)
.addContainerGap())
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.add(jTextField1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 24, Short.MAX_VALUE)
.addContainerGap())
jPanel2.setBackground(new java.awt.Color(255, 255, 255));
jPanel2.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 102, 204)));
label.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
label.setIcon(new javax.swing.ImageIcon("C:\\java\\workspaces\\cambrabcn\\firmasElectronicas\\logo.gif"));
org.jdesktop.layout.GroupLayout jPanel2Layout = new org.jdesktop.layout.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.add(label, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 308, Short.MAX_VALUE)
.addContainerGap())
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.add(label)
.addContainerGap(229, Short.MAX_VALUE))
jPanel3.setBackground(new java.awt.Color(255, 255, 255));
jPanel3.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 102, 204)));
//this.jButton1.setVisible(false);
//this.jButton2.setVisible(false);
jButton1.setText("Seg\u00fcent");
jButton1.setAlignmentX(0.5F);
//Cargamos el primer formulario en el JPanel2
loadFirstForm();
//Modificamos el texto del bot�n y el contador de pasos.
//this.jButton1.setText("Siguiente");
//this.jButton1.setVisible(true);
//this.jButton2.setVisible(true);
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
jButton2.setText("Cancel\u00b7lar");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
org.jdesktop.layout.GroupLayout jPanel3Layout = new org.jdesktop.layout.GroupLayout(jPanel3);
jPanel3.setLayout(jPanel3Layout);
jPanel3Layout.setHorizontalGroup(
jPanel3Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel3Layout.createSequentialGroup()
.addContainerGap()
.add(jButton1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 94, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 112, Short.MAX_VALUE)
.add(jButton2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 102, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
jPanel3Layout.setVerticalGroup(
jPanel3Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel3Layout.createSequentialGroup()
.addContainerGap()
.add(jPanel3Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jButton2)
.add(jButton1))
.addContainerGap())
org.jdesktop.layout.GroupLayout appletPanelLayout = new org.jdesktop.layout.GroupLayout(appletPanel);
appletPanel.setLayout(appletPanelLayout);
appletPanelLayout.setHorizontalGroup(
appletPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, appletPanelLayout.createSequentialGroup()
.addContainerGap()
.add(appletPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
.add(org.jdesktop.layout.GroupLayout.LEADING, jPanel2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.add(org.jdesktop.layout.GroupLayout.LEADING, jPanel1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.add(org.jdesktop.layout.GroupLayout.LEADING, jPanel3, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap())
appletPanelLayout.setVerticalGroup(
appletPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, appletPanelLayout.createSequentialGroup()
.addContainerGap()
.add(jPanel1, 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(jPanel2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(jPanel3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
add(appletPanel, java.awt.BorderLayout.CENTER);
}// </editor-fold>
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
this.destroy();
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
changeForms(this.paso);
// Declaraci�n de variables - no modificar
private javax.swing.JPanel appletPanel;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
private javax.swing.JLabel jTextField1;
private javax.swing.JLabel label;
// Fin de declaraci�n de variables
* M�todo readParameters
* M�todo que inicializa los valores de los par�metros internos, recibidos por par�metro.
private void readParameters() throws FileNotFoundException, IOException {
???????????????? deleted for the forum
addSecurityProviders();
* M�tode loadFirstForm
* Aquest m�tode carrega a jPanel2 el formulari que informa sobre la c�rrega dels arxius
private void loadFirstForm(){
//Form1 f1 = new Form1(stream, i + 1, fileURL.size(), sender.returnCurrentContentLength(), appletBackground);
//Form1 f1 = new Form1(fileURL.size(), sender.returnCurrentContentLength());
Form1 f1 = new Form1();
//Lo dimensionamos y posicionamos
f1.setSize(310, 150);
f1.setLocation(10, 110);
//A�adimos el formulario al JPanel que lo contendr�
this.jPanel2.add(f1);
//Validem i repintem el JPanel
jPanel2.validate();
jPanel2.repaint();
//Descarreguem l'arxiu a signar
*System.out.println("FormularioApplet Dentro de loadFirstForm(), antes de llamar a getDownloadFile()");*
*byte obj[] = f1.getDownloadedFile(this.documentToSign);*
if (obj == null){
System.out.println("Lo que devuelve f1.getDownloadedFile(this.documentToSign) es NULL");
else{
System.out.println("Lo que devuelve f1.getDownloadedFile(this.documentToSign) NO es NULL");
System.out.println("obj: " + obj.length);
this.ftbsigned.add(obj);
System.out.println("FormularioApplet Dentro de loadFirstForm(), despu�s de llamar a getDownloadFile()");
//Indicamos que el primer paso ya se ha efectuado
this.paso++;
* M�tode changeForms
* Aquest m�tode carrega a jPanel2 un formulari concret segons el valor de la variable global "paso"
private void changeForms(int paso){
/*A cada paso se cargar� en el JPanel y formulario diferente
* Paso previo: Se realiza en la inicializaci�n, carga el formulario, descarga el archivo y muestra la barra de carga.
* Case 1: Se carga el formulario de selecci�n de tipo de firma.
* Case 2: Se carga el formulario de datos de la persona que firma.
this.paso = paso;
switch(paso){
case 1:
//Creamos un objeto de formulario (seleccion de tipo de firma)
Form2 f2 = new Form2();
//Lo dimensionamos y posicionamos
f2.setSize(310, 185);
f2.setLocation(10, 110);
//Quitamos el formulario 1 y a�adimos el formulario 2 al JPanel
this.jPanel2.remove(1);
this.jPanel2.add(f2);
//Validem i repintem el JPanel
jPanel2.validate();
jPanel2.repaint();
//Modificamos el contador de pasos.
this.paso++;
break;
case 2:
//Creamos un objeto de formulario (seleccion de tipo de firma)
Form3 f3 = new Form3();
//Lo dimensionamos y posicionamos
f3.setSize(310, 175);
f3.setLocation(15, 130);
//Quitamos el formulario 1 y a�adimos el formulario 3 al JPanel
this.jPanel2.remove(1);
this.jPanel2.add(f3);
//Validem i repintem el JPanel
jPanel2.validate();
jPanel2.repaint();
//Modificamos el texto del bot�n y el contador de pasos.
this.jButton1.setText("Finalizar");
this.paso++;
break;
default:
//Finalizar el Applet
//C�digo que se encargue de guardar el archivo en el disco duro del usuario
break;
private void addSecurityProviders() throws FileNotFoundException, IOException {
Security.addProvider(new CryptoAPIProvider());
if (signatureType == SIGNATURE_PDF) {
Security.addProvider(new BouncyCastleProvider());
else {
Security.addProvider(new Sun());
private File createOutputFile(String filename, int index) {
return new File((String)outputFilename.get(index));
protected Object javascript(String function, String args[]) throws RuntimeException {
//Remove
if (true) return null;
try {
Vector<String> list = new Vector<String>();
if(args != null) {
for(int i = 0; i < args.length; i++) {
list.addElement(args);
if(list.size() > 0) {
Object objs[] = new Object[list.size()];
list.copyInto(objs);
return JSObject.getWindow(this).call(function, objs);
} catch(UnsatisfiedLinkError e) {
e.printStackTrace();
throw new RuntimeException((new StringBuilder()).append(e).append("\nFunci�: ").append(function).toString());
} catch(Throwable e) {
e.printStackTrace();
throw new RuntimeException((new StringBuilder()).append(e).append("\nFunci�: ").append(function).toString());
return JSObject.getWindow(this).call(function, new Object[0]);
Edited by: Kefalegereta on Oct 31, 2007 3:54 AM
Edited by: Kefalegereta on Oct 31, 2007 4:00 AMLook at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
Change the channel on your wireless router. Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
Another thing to try - Go into your router security settings and change from WEP to WPA with AES.
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
If none of the above suggestions work, look at this link.
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
Cheers, Tom -
Alright, before you guys flip out and say post it to the swing forum, why does the swing forum say read only? Now I have searched the forum but cannot find anything that deals with swing and the kind I am doing. So if you can provide some advice or some help, it would be greatly appreciated. This is my last hurdle to tackle in my school project.
I tried a StringBuffer approach but it kept giving me an error saying it would not work with JTextArea? Maybe the code was wrong?
This needs to take the text on the screen which I have and post it reversed when the "Reverse" button is clicked... I have been searching the web and these forums and all the different reverse methods and theories are confusing me, I try to copy them and get them to work but I just keep receiving errors. What is the best way to do this with using GUI?
else if (actionCommand.equals("Reverse"))
reverseMemo = theText.getText();
/*Is this where I would put the reverse code?*/
theText.setText(reverseMemo);
}Thanks,
JessJust write a method to reverse the text
read the string in reverse and start plugging the values into a string buffer (inside a loop of course)
then display results:
textfield.setText(stringbuffer.toString());
This is my last hurdle to tackle in my school project.I highly doubt it.
The fact you are asking this question shows me you did not learn anything about Java much less computer science. Your question has nothing to do with swing. -
it is possible to create a standalone file, that works with swing and it can take less than 0.5MB (JRE takes 9MB)
What's jView?
There's a JViewport() in the API but no JView? -
hi,
has anyone seen problems with Swing via VNC? i've seen components not being redrawn and am wondering if this is because Swings redraw routines are not triggering a VNC refresh because they are not done at the same level as native OS redraw.
this sounds plausible but surely Windows knows at some level that a redraw has occured to refresh the screen content? I don't know anything about Windows API but would guess that there are events broadcast related to redraw which VNC is catching to efficiently communicate what has changed on screen?
any help appreciated,
thanks,
asjfI have had a lot of problems with Swing and some of the other remote desktop like programs (PC Anywhere & Timbuktu to be specific). But I have always had good luck with VNC... I think they do something fundamentally different that works better. So to answer your question... no :)
-
Trying to register with ePrint and getting error code.Ajax submit failed: error = 403, Forbidden.
Trying to register with ePrint and getting error code.Ajax submit failed: error = 403, Forbidden. I need help??
To bypass this error attempt either a restart of your computer, or use an alernate broser such as firefox or chrome. If you already have another browser the latter may be the easier fix.
Jon-W
I work on behalf of HP
Please click “Accept as Solution ” on the post that solves your issue to help others find the solution.
Click the KUDOS STAR on the left to say “Thanks” for helping! -
Is it possible to create a tree with drag-and-drop functionality using ajax
I saw these samples;
Scott Spendolini's AJAX Select List Demo
http://htmldb.oracle.com/pls/otn/f?p=33867:1:10730556242433798443
Building an Ajax Memory Tree by Scott Spendolini
http://www.oracle.com/technology/pub/articles/spendolini-tree.html
Carl Backstrom ApEx-AJAX & DHTML examples;
http://htmldb.oracle.com/pls/otn/f?p=11933:5:8901671725714285254
Do you think is it possible to create a tree with drag-and-drop functionality using ajax and apex like this sample; http://www.scbr.com/docs/products/dhtmlxTree/
Thank you,
Kind regards.
TonguçHello,
Sure you can build it, I just don't think anyone has, you could also use their solution as well in an APEX page it's just a matter of integration.
Carl -
AIR with JavaScript and AJAX (noob design issues)
Okay, so as the subject states, I'm a noob when it comes to designing an AIR app. My question is kind of two fold:
First, as a matter of design, I've got a main window that has several drop-down type menus "File", "Preferences", "Help" that kind of thing. My plan was to keep reusing the main window for each of my different screens (unless a pop-up/dialog type screen was called for)
Anyway, the application I'm writing will, in part, handle a database of patrons. So under one of the menus (File in this case) I've got a "Patron" option. Clicking on "Patron" fires a function called newPatron() which in turn calls my function ebo.displayScreen('patron.htm'). This latter function takes the filename passed in and reads that file then dumps it's contents out to the main screen.
So, my main window consists (in part) of the following html:
<body onload="ebo.doLoad();">
<div id="content"></div>
</body>
then my displayScreen function looks like this:
function displayScreen(filename){
var my = {};
// get a handle on the file...
my.file = air.File.applicationDirectory(resolvePath(filename);
// get a handle on the stream...
my.stream = new air.FileStream();
//open the stream for read...
my.stream.open(my.file, air.FileMode.READ);
// read the data...
my.data = my.stream.readUTFBytes(my.stream.bytesAvailable);
// close the stream...
my.stream.close();
// update the screen (I'm using jQuery here)
$("#content").empty().append(my.data);
So anyway, this works like a champ. I click on "Patron" from my file menu and the screen changes to display the contents of patron.htm.
Currently, patron.htm just contains the following:
<div style="text-align:left;">
<input type="button" value="add" onclick="ebo.add(1,2);" />
</div>
<div id="result"><div>
ebo.add looks like this:
function add(a,b){
var my = {};
my.result = a + b;
$("#result").empty().append(my.result + "<br />");
So, if anyone hasn't guessed by now, the code contained in the ebo namespace gets included on the main screen when the application loads, and my problem is that despite the fact that once the patron.htm file is loaded in the content div by clicking on the menu option, my button on that screen refuses to work. I've even tried just having the button do an alert directly,
<input type="button" value="add" onclick="alert('AIRRocks!');" />
but even that fails!
So, I added some code to the main page to test a button from there...
<body onload="ebo.doLoad();">
<input type="button" value="add" onclick="ebo.add(1,10);" />
<div id="result"></div>
<div id="content"></div>
</body>
So, now when the main screen loads, I get an "add" button and when I click it the number 11 appears in the "result" div. When I click on the Patron menu option, the new html and javascript are loaded into the "content" div, but the add button in that area refuses to work!
What gives? I'm sure I'm missing something. So I guess the two questions are: is my scheme of loading new content into the main window by reading the contents of a file, flawed in some way? Or am I just missing something about making calls from this dynamically loaded content? It *looks* like it should work fine, but if I can't make javascript calls from the resultant content, then the concept is no good.
I realize this has been a somewhat long winded post, but hopefully it describes in enough detail the problem I'm having. I should maybe add that I've looked at what's in the DOM using the AIR HTML/JS Application Inspector and it looks like everything should work perfectly.
I hope someone out there can help me and might have the patience to explain where I've gone wrong. I might also mention that the only book I've read (or am reading) on AIR with JavaScript and AJAX is "Adobe AIR (Adobe Integrated Runtime) with Ajax: Visual QuickPro Guide"... it really hasn't covered aspects of what makes good design (like what's the best way to reuse the main application window to hold interactive content)... but anyway, there you have it.
Again, I hope someone can help me out.
Thanks!
ChrisThanks for responding, Andy. I don't think I'm losing my namespace. That
thought had crossed my mind, which is why (and I thought I put this in my
original post) I tried putting a somple alert in the onclick event of the
button in my "patron.htm" file... but that simple alert doesn't even work.
:o(
Do you still think it's an issue with the namespace? -
Help please with JFRAMES swing and variables
Hi...I need some help with Swing.I need to use the variable "datauser" and read it to operate with it( add,multiply,etc)
I have two independants JFrames.(2 classes in different .java files).
//FRAME1 get user data
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.*;
public class FRAME1 extends javax.swing.JFrame {
public double datauser; //i need this variable
public JPanel jPanel1;
public JTextField jTextField1;
public FRAME1(){
datauser=this.datauser;
jPanel1 = new JPanel();
jTextField1 = new JTextField();
jTextField1.setText("10");
JPanel1.add(jTextField1);
jTextField1.addActionListener(new hearme());
pack();
class hearme implements ActionListener{
public void actionPerformed(ActionEvent e)
{ datauser= Double.parseDouble(jTextField1.getText()); //people write a number
In other JFrame class (another .java file) i put:
public class FRAME2 extends javax.swing.JFrame
double aux;
double multiplyby100() {
aux= datauser *100;
return aux;
ANd i cant get anything just errors ..how can i relate to variables from differents Jframes?? I mean..how can i use a variable from Jframe1 in Jframe2. The actual value that people type in that textfieldoh well thx for ur help...
I meant ..i have 10 differentes Jframes (10 different clases)
SO i have 10 differents windows...Then with a combobox ill choose what Jframe will appear.When a window appears i put ,for instance,parameters for calculating a circle area .Then i select rectangle in the combobox list and appear in the principal window its parameters to write in. Then i choose another element in that combobox and i put parameters for a square.Each one is a different window.I dont want to use Jdialog for that.
The problem is that i want to use a variable defined in one frame to use that value in another class....for example i want to use a variable like this
double side =double.parse(Textfield.getText()); //in a texfield in frame 1
And do something with "side" but in a different class.(different file in the same package)
public class hi() {
double theside;
theside=side; //<---------- here i have problems
//how can i use the variable "side" in the class hi
The exact point is that i want to get all the parameters from the user for each window that appears.And each class Jframe have their own variables .
And i want to access to those variables in real time (what people type)
So i cant find any solution.I have a structure for each window with labels and textfields (to put parameters).And i need to save each variable that people type in those textfields in public variables because i need to operate with data in a different class (for example in a main class).But that data is only saved into the particular classes because variables exist in there.
Thanks in advance for ur answers .I havent slept for hours trying to think of that
thanks! -
Single Frame with Back and Next Jbutton support for Swing
Hi All,
I need a help regarding to th JFrame.
I have to design a tool with Back and next button with a single frame. With Next button action i should move to a new Frame content and with Back button i should back to the previous one.
How should i proceed?
Thanks a lot in advance.1) That's a Swing question. There a {forum:id=950} forum.
2) This is a very common need. There is no built-in widget in the JDK, and a lot of custom approaches, including in libraries. Google for "Java Swing wizard"
3) If you roll your own, the simplest way, as far as the GUI layer goes, is to stuff your panels in a CardLayout, and have your buttons switch the current "card". Very simple: http://download.oracle.com/javase/tutorial/uiswing/layout/card.html
4) The trick may be in keeping the "business logic" in sync (if for example panel 2 depends on processing info from panel 1). If you're new to java and Swing, make sure you understand objects and references -
TextArea with formatted Text, Hyperlinks, and clickable Text with SWING?
Hi again,
Ok if I decide to use Swing, is there any TextArea which supports Formatted Text Hyperlinks AND clickable Text wich calls a callback routine??? I think formatted Text and Hyperlinks are possible with JTextArea and the RTF editorKit, but clickable text, in order to controll the program in some way???
Could anyone help me?
GreetsTry the JEditorPane class.See the intro exapmle at the top of
[url=http://java.sun.com/j2se/1.4.2/docs/api/javax/swin
/JEditorPane.html] this page.That seems to be the solution! Can I use the JTextPane, too? Does a DefaultStyledEditorKit support Hyperlinks and Hyperlinklisteners, too?
In order to realize callback functions I have to insert a HTML-Anchor with the Attribute as the Parameter for my method. Then my HyperlinkListener catches the HyperlinkEvent and the hyperlinkUpdate method reminds the parameter!
Is that right?
Thank you very much!
Greets
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