DOM Parsing Not working in Applet.
Hi,
I ve an applet (parserapplet)which contains the DOM parsing. So xalan.jar(nearly 780 kb) required to assist the parsing. I gave archive="xalan.jar" in My html file. But the jar file is not downloaded from the archive tag. and ClassnotFoundException is thrown.
the exact exception is:
======================
com.ms.security.SecurityExceptionEx[Host]: cannot access file C:\WINNT\Java\lib\jaxp.properties
at com/ms/security/permissions/FileIOPermission.check
at com/ms/security/PolicyEngine.deepCheck
at com/ms/security/PolicyEngine.checkPermission
at com/ms/security/StandardSecurityManager.chk
at com/ms/security/StandardSecurityManager.checkRead
at java/io/File.exists
at javax/xml/parsers/DocumentBuilderFactory.findFactory
at javax/xml/parsers/DocumentBuilderFactory.newInstance
at parserapplet.parseXMLMessage
at parserapplet.init
at com/ms/applet/AppletPanel.securedCall0
at com/ms/applet/AppletPanel.securedCall
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.run
at java/lang/Thread.run
javax.xml.parsers.FactoryConfigurationError: java.lang.ClassNotFoundException: org/apache/crimson/jaxp/DocumentBuilderFactoryImpl
at javax/xml/parsers/DocumentBuilderFactory.newInstance
at parserapplet.parseXMLMessage
at parserapplet.init
at com/ms/applet/AppletPanel.securedCall0
at com/ms/applet/AppletPanel.securedCall
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.run
at java/lang/Thread.run
I know signing the applet a bit. But though it is signed , second exception is constantly thrown. so please write in detail the procedure to sign the applet. and how to download xalan.jar in html page etc.,
I require how to download the jar files, and after the completion of downloading of the jar files only, the applet should get executed. or shall i use different jar file(like crimson.jar?). This is urgent requirement.Please help me.!
the classes for the parsing are not at all downloaded and hence the problem.
help me reg that.
thank you in advance/.
Prasanna kumar k.
Hello Prasanna kumar k.
First you should sign your jar files (xerces.jar crimson.jar and xalan.jar) and recreate a cab files
xerces.cab crimson.cab xalan.cab. To do that you should download sdk for java from microsoft .
create testkey named testkey.pvk
1. makecert -sv testkey.pvk -n "CN=your name" test.cer
convert to public key
2. cert2spc test.cer test.spc :
create cab file
3. cabarc -p -c -r -s 6144 test.cab
sign the cab file
4. signcode -j java.dll -jp -low -spc -v testkey.pvk -n test.cab
after that you should use thia files in html:
<!doctype html public "//W3//DID HTML 3.2 Final//EN">
<HTML>
<HEAD>
<META content="text/html; charset=iso-8859-1">
<TITLE>IBM Host On-Demand 6.0</TITLE>
</HEAD>
<BODY BACKGROUND="mankolpr/custom/img/Drawing1.gif">
<CENTER>
<IMG src="mankolpr/custom/img/images/ot_hod_log.gif">
<P>
<APPLET archive="crimson.jar,xerces.jar,xalan.jar" CODE="test.class" WIDTH=584 HEIGHT=450>
<PARAM NAME=cabinets VALUE=crimson.cab,xerces.cab,xalan.cab>
<PARAM NAME=background VALUE="pink">
<p>If you are reading this message, your client platform is not capable of running
IBM Host On-Demand. To run IBM Host On-Demand, you must have a Java-enabled web
browser such as Netscape Navigator or Microsoft Internet Explorer.
</APPLET>
</CENTER>
</BODY>
</HTML>
Best Regards,
Tzur Emzari
Project Manager
Local Authority Data Processing Center LTD
ISRAEL
Tel : 972-4-8615754, Fax : 972-4-8661977
Cell : 972-53-532448
[email protected] <mailto:[email protected]>
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Pt$sahmad43 wrote:
Saber did you take a look at my code? I am building array using two methods , and i dont wont to try the third for no reason,You are building a string not an array. My experience is that the array approach generally has less problems than the single string approach and is easier to debug.
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>
thanksBye -
i cant seem to be able to select the values from the imported xml file and i dont understand why?
my jsp page:
<%@ page import="java.util.*;" %>
<%@ page contentType="text/html; charset=ISO-8859-5" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<html>
<head>
<title>Interactive Experience Database - Template 1</title>
<LINK REL="STYLESHEET" TYPE="text/css" HREF="style.css">
</head>
<body>
<FORM>
<c:import var="xmlfile" url="/cv.xml"/>
<x:parse var="doc" xml="${xmlfile}"/>
<x:out select="$doc/cv/ContactInfo/PersonName"/>
</form>
</body>
</html>the xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE cv>
<cv>
<ContactInfo>
<PersonName>Donald Smith</PersonName>
</ContactInfo>
</cv>thanks, one thing that annoys me is that that apache
make it so hard to download anything, finding the
binary is so time consuming, ive been looking for the
last half hour. its a jokeI kind of agree with you that for certain projects it is a little difficult to find the stable release of the binaries. I personally find it very time consuming to locate the binary for JSTL 1.1 , and finding the binary for Xalan seems a little more easier than finding the one for JSTL 1.1
For Xalan I was quickly able to locate it through google:
Searched for "download apache xalan" , then Google showed me
http://xml.apache.org/xalan-j/downloads.html then I clicked on :
http://www.apache.org/dyn/closer.cgi/xml/xalan-j
~~~~~~~~~~~~~~~~~~~~~~
But for JSTL 1.1 it took quite a number of steps :
Searched on Google for : "download JSTL 1.1"
First link showed:
http://java.sun.com/products/jsp/jstl/downloads/index.html
Shows the link for Standard 1.0 instead of Standard 1.1
(A newbie to JSTL wouldn't know that there's a 1.1 final release download available)
another link for the same keywords takes me to:
http://jakarta.apache.org/taglibs/
Then I click on downloads: http://jakarta.apache.org/taglibs/#Downloads
but it only shows Nightly Builds downloads not the stable release ones.
Then I click on JSTL1.1 on the left nav takes me to
http://jakarta.apache.org/taglibs/doc/standard-doc/intro.html
The download link finally takes me to:
http://people.apache.org/builds/jakarta-taglibs/nightly/
which is again nightly
Then I carefully read and finally see:
Download the Binary Distribution of the Final Release:
http://jakarta.apache.org/site/downloads/index.html
Then I click on TagLibs
http://jakarta.apache.org/site/downloads/downloads_taglibs.html
and pick Standard 1.1 Tag lib (assuming that is JSTL 1.1)
http://jakarta.apache.org/site/downloads/downloads_taglibs-standard.cgi
I guess I could report this issue to Apache Taglibs and have them make it more efficient to locate the download for the Taglibs. -
Mouse Drag is not working in Applets
In our application we are using applets in containing in IFRAMES in IE to display different type of graphs and animations etc. User can open/close these Applets and iframes to navigate from one data view to other. During this navigation sometimes mouse drag event stops and all drag related operations like scrolls etc stops responding to drag operations in all applets in same JVM.
My investigation shows that swing component hierarchy gets corrupted somehow and this exception is thrown
EventMulticaster.eventDispatched(Toolkit.java:2244)
at java.awt.Toolkit.notifyAWTEventListeners(Toolkit.java:2203)
at java.awt.Component.dispatchEventImpl(Component.java:4528)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4603)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4255)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
at java.awt.Container.dispatchEventImpl(Container.java:2085)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
peerComponents in Container class is returning null on call to getLocationOnScreen that causes this exception.
I fixed the issue in awt library but ORACLE license terms don't allow redistribution of modified version of awt.
Please help me fix this issue in applet code or suggest me to bypass license restrictions.
Thanks in advance!
Luqman877922 wrote:
peerComponents in Container class is returning null on call to getLocationOnScreen that causes this exception.
I fixed the issue in awt library but ORACLE license terms don't allow redistribution of modified version of awt.Something Oracle do allow is to raise a bug report. On that report they invite you to post a work-around or fix. That would be the place to put the fix you have devised. Oracle will (supposedly) fix it, then you (and everyone else) can enjoy the fix as a free upgrade in the next version.
They also offer 'support contracts' (AFAIU) in which you might pursue your own immediate fixes. But raise the bug report anyway. -
Scrolling not working in applet
I'm a Java/Applet/Swing newbie and I have run into the following problem. I can't seem to make an applet with a JEditorPane in a JScrollPane scroll programmatically. If I click on the editor pane and enter text, it scrolls, but setCaretPosition() or scrollToReference() don't seem to have any effect. I would be very grateful if anyone could tell me what is wrong with the following simplified code that exhibits the problem and how should I correct it.
Thanks,
Mike
===================
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.net.*;
public class SourceTest extends JApplet {
JEditorPane editorPane;
String newline = "\n";
String sourceCode;
public void start() {
sourceCode = new String("<html><body><pre>");
for(int i = 0; i < 1000; i++) {
sourceCode += "x<br>";
sourceCode += "</pre></body></html>";
editorPane = new JEditorPane("text/html", sourceCode);
editorPane.setEditable(false);
JScrollPane scrollPane = new JScrollPane(editorPane);
//Add Components to the Applet.
Container contentPane = getContentPane();
contentPane.add(scrollPane);
// *** Try to scroll, but it doesn't work
editorPane.setCaretPosition(400);
}I have something similar in an applet working just fine. I do the scroll pane logic a bit differently:
JScrollPane myScrollPane = new JScrollPane();
myPanel.add(myScrollPane, BorderLayout.CENTER);
myScrollPane.getViewport().add(myEditorPane, null);
First stmt is straight forward. Second stmt is just adding the scroll pane to the panel -- also straight forward. Third statement is the one that is different than the way you do it.
Hope that helps. If it doesn't, let me know and I'll copy your code and try to fix it. -
Need help in getting common DOM API to work
Grettings, all -
I'm up against the wall. I have spend a lot of time trying to get Common DOM API to work to no avial. So far I tried it with Netscape 6.2.3, Mozilla 1.0 and MSIE 6. My problem is that while I get non-null Document, all calls on it return null. Here is the code snippet I have:
public class Foo extends Applet {
Applet m_appletThis;
StringBuffer m_sbuf;
public void init() {
m_appletThis = this;
m_sbuf = new StringBuffer();
addItem("initializing... ");
try {
JSObject jsWin = JSObject.getWindow(this);
JSObject jsDoc = (JSObject)jsWin.getMember("document");
String sName = (String)jsDoc.getMember("name");
Object oLocation = (JSObject)jsDoc.getMember("location");
addItem("location=" + oLocation);
String sTitle = (String)jsDoc.getMember("title");
addItem("title=" + sTitle);
addItem("initialized! ");
catch (JSException e) {
e.printStackTrace();
public void start() {
addItem("starting... ");
DOMService ds = null;
try {
ds = DOMService.getService(this);
String sTitle = (String)ds.invokeAndWait(new DOMAction() {
public Object run(DOMAccessor da) {
Document doc = da.getDocument(m_appletThis);
return doc.getNodeValue();
addItem(sTitle);
// let's try again
Document doc = (Document)ds.invokeAndWait(new DOMAction() {
public Object run(DOMAccessor da) {
Document doc;
NamedNodeMap nnm;
Node node;
doc = (Document)da.getDocument(m_appletThis);
nnm = doc.getAttributes();
NodeList nl = doc.getChildNodes();
if (null == nl)
addItem("no children!");
else
for (int i = 0; i < nl.getLength(); i++) {
node = nl.item(i);
addItem((null == node) ?
("no node" + i) : node.getNodeName());
if (null == nnm)
addItem("no attribs!");
else {
node = nnm.getNamedItem("location");
if (null == node)
addItem("no node!");
else
addItem(node.getNodeValue());
return doc;
catch (DOMUnsupportedException e1) {
e1.printStackTrace();
catch (DOMAccessException e2) {
e2.printStackTrace();
addItem("started! ");
public void stop() {
addItem("stopping... ");
public void destroy() {
addItem("preparing for unloading...");
void addItem(String newWord) {
System.out.println(newWord);
m_sbuf.append(newWord + "\r\n");
repaint();
public void paint(Graphics g) {
Dimension dim = getSize();
//Draw a Rectangle around the applet's display area.
g.drawRect(0, 0, dim.width - 1, dim.height - 1);
//Draw the current string inside the rectangle.
g.drawString(m_sbuf.toString(), 5, 15);
This produces the following output:
initializing...
location=file:///foo.bar.html
title=
initialized!
starting...
null
no children!
no attribs!
started!
As starting/started lines show all of my attempts to get access to browsers DOM fail.
I will really appreciate any advice you can provide. Thanks in advance.
- Andrewhi,
i desperately tried similar things and, after studying some forum entries, it seems to me that common dom DOES NOT WORK...
sorry for us, but bugparade promises to fix that in 1.4.2 (somewhen in 2003 :-( )
if you need dom-access try jsobject or the ibm directDOM-technology, that seems to work much better..
greets,
dirk -
HT5559 Java web start does not work
I have followed the instructions in this article, including the last step about web start, but it still does not work, neither applets or web start. When I try to launch a JWS application by double clicking it I get the dreaded warning dialog:
To open this Web Start application, you need to download the Java Runtime Environment.
Click “More Info…” to visit the website for the Java Runtime Environment.
I do have a JRE installed, 1.6, since I for compatibility reasons can't upgrade.
Trying to launch a web start application from the commandline looks like this:
$ javaws /tmp/airview.jnlp
Java Web Start splash screen process exiting ...
Can not find message file: No such file or directory
Regular Java-programs work fine.
$ java -version
java version "1.6.0_37"
Java(TM) SE Runtime Environment (build 1.6.0_37-b06-434-11M3909)
Java HotSpot(TM) 64-Bit Server VM (build 20.12-b01-434, mixed mode)Read this thread https://discussions.apple.com/thread/4789691?tstart=0
This fixed the issue for me:
sudo /usr/libexec/PlistBuddy -c "Delete :JavaWebComponentVersionMinimum" /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/XProtect.meta. plist
In the comments to the linked article someone suggests to comment out the node in stead of deleting it. Probably safer (it's explained further down how to do that). Anyway I already spent to much time on this nonsense, deleted it and it worked, so I'm happy. -
Web Cam applet is not working in great consistency
Hi... My video capturing applet is not working very well.
The image stream is displayed on the web page in JPEG format with 0.5 quality. However, it crashes after a while and the it does not release the vfw resource.
I have to restart my machine in order to execute it again.
Can anyone please help?
Thanks.
CarterOk. Thanks.
Sender Applet
import javax.swing.*;
import java.io.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
/*<applet code="myGUIApplet.class" width="300" height="300"></applet>*/
public class myGUIApplet extends JApplet implements ActionListener
private JPanel bottom=new JPanel();
private JPanel centVisual=new JPanel();
private JPanel connectionAddress=new JPanel();
private JButton capture=new JButton("Start Capturing");
private JButton stops=new JButton("Stop");
private JMenuBar menubar=new JMenuBar();
private JMenu file=new JMenu("file");
private JMenuItem fileItem1=new JMenuItem("Exit");
private JLabel serverip=new JLabel("Server IP");
private JTextField setIP=new JTextField();
public static JTextField ServerInfo=new JTextField();
private MyTransmitter mytrans;
private String ip;
public static final String DEFAULT_MULTICAST_IP="226.10.10.20";
public static final String DEFAULT_PORT="80";
public void init()
//setSize(400,400);
setLayout(new BorderLayout());
menubar.add(file);
file.add(fileItem1);
bottom.setLayout(new BorderLayout());
bottom.setBackground(Color.black);
bottom.add("West",capture);
bottom.add("East",stops);
connectionAddress.setLayout(new BorderLayout());
connectionAddress.add("North",serverip);
connectionAddress.add("South",setIP);
ServerInfo.setEditable(false);
connectionAddress.add("Center",ServerInfo);
setIP.addActionListener(this);
setIP.setText("");
capture.setBackground(Color.lightGray);
capture.addActionListener(this);
stops.addActionListener(this);
fileItem1.addActionListener(this);
add("South",bottom);
add("North",menubar);
add("Center",connectionAddress);
public void actionPerformed(ActionEvent ae){
Object source=ae.getSource();
if(source==capture){
if(setIP.getText().equals(""))
ip=DEFAULT_MULTICAST_IP;
else{
ip=setIP.getText();
if(mytrans!=null){
mytrans.stopTransmitter();
mytrans=null;
System.out.println(" - Connecting to "+ip+" port: "+DEFAULT_PORT);
ServerInfo.setText(" - Connecting to "+ip+" port: "+DEFAULT_PORT);
mytrans=new MyTransmitter(ip,DEFAULT_PORT,ServerInfo);
mytrans.start();
if(source==stops){
if(mytrans!=null)
mytrans.stopTransmitter();
System.exit(0);
if(source==fileItem1){
if(mytrans!=null)
mytrans.stopTransmitter();
System.exit(0);
public void destroy(){
if(mytrans!=null){
mytrans.stopTransmitter();
import java.awt.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
import java.net.InetAddress;
import javax.media.*;
import javax.media.protocol.*;
import javax.media.protocol.DataSource;
import javax.media.format.*;
import javax.media.control.TrackControl;
import javax.media.control.QualityControl;
import javax.media.rtp.*;
import javax.media.rtp.rtcp.*;
import javax.media.rtp.*;
import java.io.InputStream;
import javax.media.rtp.RTPManager;
public class MyTransmitter extends Thread
private MediaLocator videoLocator;
private String ipAddress;
private int basePort;
private Integer stateLock=new Integer(0);
private boolean failure;
private Processor processor;
private DataSource videoDataInput,videoDataOutput;
private RTPManager rtpMgrs[];
private VideoFormat JPEG_VIDEO=new VideoFormat(VideoFormat.JPEG_RTP);
private SendStream sendStream;
private SourceDescription descriptionList[];
private JTextField infoField;
public MyTransmitter(String ips,String ports,JTextField ServerInfo){
infoField=ServerInfo;
ipAddress=ips;
Integer bPort=Integer.valueOf(ports);
if(bPort!=null)
basePort=bPort.intValue();
public void run()
initializeVideo();
if(videoLocator!=null){
createMyProcessor();
createMyManager();
// May be should put inside the if..else statements
//createMyTransmitter();
// Initailize the video
public void initializeVideo()
// Stre the devices in a vector
VideoFormat format=new VideoFormat(VideoFormat.RGB);
Vector deviceList=CaptureDeviceManager.getDeviceList(format);
CaptureDeviceInfo deviceInfo=null;
// If there is more than one device detected
if(deviceList.size()>0){
// Set the first device to device Info
// GEt the media locator of the devie
deviceInfo=(CaptureDeviceInfo)deviceList.elementAt(0);
videoLocator=deviceInfo.getLocator();
}else{
System.out.println(" --X No device found...");
infoField.setText(" --X No device found...");
public void createMyProcessor()
boolean result=false;
DataSource ds=null;
// Check if the media locator is null
if(videoLocator==null){
System.out.println(" --X No video locator..");
infoField.setText(" --X No video locator...");
System.out.println(" - Trying to create a Processor..");
infoField.setText(" - Trying to create a Processor..");
// Attempt to create DataSource from media locator
try{
ds=Manager.createDataSource(videoLocator);
}catch(Exception ex){
System.out.println(" --X Unable to create dataSource : "+ex.getMessage());
System.out.println(" - Video data source is created..");
infoField.setText(" - Video data source is created..");
// Try to create Processor from DataSource
try{
processor=Manager.createProcessor(ds);
}catch(NoProcessorException npe){
System.out.println(" --X Unable to create Processor: "+npe.getMessage());
infoField.setText(" --X Unable to create Processor: "+npe.getMessage());
catch(IOException ioe){
System.out.println(" --X IOException creating Processor..");
infoField.setText(" --X IOException creating Processor..");
// Wait for the processor to be configured
result=waitForState(processor,Processor.Configured);
if(result==false){
System.out.println(" --X Could not configure processor..");
infoField.setText(" --X Could not configure processor..");
// Set the track controls for processor
TrackControl []tracks=processor.getTrackControls();
if(tracks==null || tracks.length<1){
System.err.println(" --X No track is found..");
infoField.setText(" --X No track is found..");
// Set the content description of processor to RAW_RTP format
// This will limit the supported formats to reported from
// Track.getSupportedFormats() to valid RTP format
ContentDescriptor cdes=new ContentDescriptor(ContentDescriptor.RAW_RTP);
processor.setContentDescriptor(cdes);
Format []supported;
Format chosen=null;
boolean atLeastOneTrack=false;
for(int i=0;i<tracks.length;i++){
Format format=tracks.getFormat();
if(tracks[i].isEnabled()){
supported=tracks[i].getSupportedFormats();
// WE've set the output content to RAW_RTP.
// So, all the supporte formats should work with RAW_RTP.
// We will pick the first one.
if(supported.length>0){
if(supported[0] instanceof VideoFormat){
chosen=checkVideoSize(tracks[i].getFormat(),supported[0]);
}else
chosen=supported[0];
tracks[i].setFormat(chosen);
System.out.println(" Track "+i+" is transmitted in "+chosen+" format.. ");
infoField.setText(" Track "+i+" is transmitted in "+chosen+" format.. ");
atLeastOneTrack=true;
}else{
// If no format is suitable, track is disabled
tracks[i].setEnabled(false);
}else
tracks[i].setEnabled(false);
if(!atLeastOneTrack)
System.out.println("atLeastOneTrack: "+atLeastOneTrack);
System.out.println(" --X Could Not find track to RTP format..");
infoField.setText("atLeastOneTrack: "+atLeastOneTrack);
infoField.setText(" --X Could Not find track to RTP format..");
result=waitForState(processor,Controller.Realized);
if(result==false){
System.out.println(" --X Could NOT realize processor...");
infoField.setText(" --X Could NOT realize processor...");
// Set the JPEG Quality to value 0.5
setJPEGQuality(processor,0.5f);
// Set the output Data Source
videoDataOutput=processor.getDataOutput();
//Start the processor
processor.start();
public void setJPEGQuality(Processor p,float values)
Control []cs=p.getControls();
QualityControl qc=null;
VideoFormat JPEGFmt=new VideoFormat(VideoFormat.JPEG);
// Loop through the ocntrols to find the Quality control for the JPEG encoder
for(int i=0;i<cs.length;i++){
if(cs[i] instanceof QualityControl && cs[i] instanceof Owned){
Object owner=((Owned)cs[i]).getOwner();
// Check if the owner is the Codec
// Check the format of output as well
if(owner instanceof Codec){
Format fmts[]=((Codec)owner).getSupportedOutputFormats(null);
// Loop through the supported format and set the quality to 0.5
for(int j=0;j<fmts.length;j++){
qc=(QualityControl)cs[i];
qc.setQuality(values);
System.out.println(" - Quality is set to "+values+" on "+qc);
infoField.setText(" - Quality is set to "+values+" on "+qc);
break;
if(qc!=null)
break;
public Format checkVideoSize(Format originalFormat,Format supported)
int width,height;
Dimension size=((VideoFormat)originalFormat).getSize();
Format jpegFormat=new Format(VideoFormat.JPEG_RTP);
Format h263fmt=new Format(VideoFormat.H263_RTP);
if(supported.matches(jpegFormat)){
width=(size.width%8 == 0 ? size.width:(int)(size.width%8)*8);
height=(size.height%8 == 0 ? size.height:(int)(size.height%8)*8);
}else if(supported.matches(h263fmt)){
if(size.width<128){
width=128;
height=96;
}else if(size.width<176){
width=176;
height=144;
}else{
width=352;
height=288;
}else{
// Unknown format, just return it.
return supported;
return (new VideoFormat(null,new Dimension(width,height),Format.NOT_SPECIFIED,null,Format.NOT_SPECIFIED)).intersects(supported);
public boolean waitForState(Processor p,Integer status)
p.addControllerListener(new StateListener());
failure=false;
if(status==Processor.Configured){
p.configure();
}else if(status==Processor.Realized){
p.realize();
//Wait until an event that confirms the success of the method, or failure of an event
while(p.getState()<status && !failure){
synchronized(getStateLock()){
try{
// Wait
getStateLock().wait();
}catch(InterruptedException ie){
return false;
if(failure)
return false;
else
return true;
public Integer getStateLock(){
return stateLock;
public void setFailure(){
failure=true;
public void createMyManager()
SessionAddress destAddress;
InetAddress ipAddr;
int port;
SourceDescription srcDesList[];
PushBufferDataSource pbds=(PushBufferDataSource)videoDataOutput;
PushBufferStream pbss[]=pbds.getStreams();
rtpMgrs=new RTPManager[pbss.length];
for(int a=0;a<pbss.length;a++){
try{
// RTP Managers or RTP Manager?????
rtpMgrs[a]=RTPManager.newInstance();
port=basePort;
ipAddr=InetAddress.getByName(ipAddress);
SessionAddress localAddr=new SessionAddress(InetAddress.getLocalHost(),port+20);
destAddress=new SessionAddress(ipAddr,port,1);
Integer myipprefix=Integer.valueOf(ipAddress.substring(0,3));
if((myipprefix.intValue()>223) && (myipprefix.intValue()<240)){
rtpMgrs[a].initialize(destAddress);
}else{
rtpMgrs[a].initialize(localAddr);
rtpMgrs[a].addTarget(destAddress);
System.out.println(" Created RTP session: "+ipAddress+" "+port+" to "+destAddress);
infoField.setText(" Created RTP session: "+ipAddress+" "+port+" to "+destAddress);
if(videoDataOutput!=null){
sendStream=rtpMgrs[a].createSendStream(videoDataOutput,0);
sendStream.start();
System.out.println(" RTP stream is started..");
infoField.setText(" RTP stream is started..");
}catch(UnsupportedFormatException ex){
System.out.println(" --X Unsupported Format : "+ex);
infoField.setText(" --X Unsupported Format : "+ex);
catch(IOException ioe){
System.out.println(" --X IOException : "+ioe.getMessage());
infoField.setText(" --X IOException : "+ioe.getMessage());
catch(Exception ex){
System.out.println(" --X Unable to create RTP Manager...");
System.out.println(ex.getMessage());
infoField.setText(" --X Unable to create RTP Manager..."+ex.getMessage());
/*public void createMyTransmitter()
try{
if(videoDataOutput!=null){
sendStream=rtpMgrs[i].createSendStream(videoDataOutput,0);
sendStream.start();
}catch(UnsupportedFormatException ex){
System.out.println(" --X Unsupported Format : "+ex);
infoField.setText(" --X Unsupported Format : "+ex);
catch(IOException ioe){
System.out.println(" --X IOException : "+ioe.getMessage());
infoField.setText(" --X IOException : "+ioe.getMessage());
public void stopTransmitter(){
if(processor!=null){
processor.stop();
processor.close();
processor=null;
// Loop through RTP Managers and close all managers..
// Dispose them for garbage collection
for(int i=0;i<rtpMgrs.length;i++){
rtpmgrs[i].removeSendStream(this);
rtpMgrs[i].removeTargets("Session ended..");
rtpMgrs[i].dispose();
//rtpMgrs.removeTargets("Session ended..");
//rtpMgrs.dispose();
* StateListener class to handle Controller events
class StateListener implements ControllerListener{
public void controllerUpdate(ControllerEvent ce){
if(ce instanceof ControllerClosedEvent){
processor.close();
/* Handle all controller events and notify all
waiting thread in waitForState method */
if(ce instanceof ControllerEvent){
synchronized(getStateLock()){
getStateLock().notifyAll();
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Client Applet
import javax.media.*;
import javax.media.protocol.*;
import javax.media.protocol.DataSource;
import javax.media.control.BufferControl;
import javax.media.control.*;
import javax.media.format.*;
import javax.media.rtp.*;
import javax.media.rtp.rtcp.*;
import javax.media.rtp.event.*;
import com.sun.media.rtp.RTPSessionMgr;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.io.*;
import java.net.*;
import java.net.URL;
import java.net.Socket;
/*<applet code="clientPlayerApplet.class" width="400" height="300">
<param name=ServerIPS value="192.168.0.9">
<param name=ServerPort value="80">
<param name=TimeToLive value="1">
<param name=archive value="clientPlayerApplet.jar">
</applet> */
public class clientPlayerApplet extends JApplet implements ControllerListener, ReceiveStreamListener,SessionListener
String sessions[]=null;
RTPManager rtpmgrs[]=null;
boolean dataReceived=false;
Object myDataSync=new Object();
private Player player;
//private String serveripadd="226.10.10.20";
//private int serverPort=2020;
//private int timeToLive=1;
private JPanel panel;
private Vector currentParticipant;
public void init()
panel=new JPanel();
setLayout(new BorderLayout());
add("Center",panel);
//String[] urls;
/*urls[0]=getParameter("ServerIPS");
urls[1]="/";
urls[2]=getParameter("ServerPort");*/
String []urls={new String(getParameter("ServerIPS")+"/"+getParameter("ServerPort")+"/"+getParameter("TimeToLive"))};
sessions=urls;
initializePlayer();
public void initializePlayer(){
try{
InetAddress ipAddr;
SessionAddress localAddr=new SessionAddress();
SessionAddress destAddr;
rtpmgrs=new RTPManager[sessions.length];
currentParticipant=new Vector();
//rtpmgrs=new RTPManager();
SessionLabel session=null;
//Open RTP session
for(int i=0;i<sessions.length;i++){
try{
session=new SessionLabel(sessions[i]);
//session=new SessionLabel(sessions);
}catch(IllegalArgumentException iae){
System.out.println(" --X Unable to parse the sesion address given");
System.out.println(" - Open RTP session for "+session.port);
rtpmgrs[i]=(RTPManager) RTPManager.newInstance();
rtpmgrs[i].addSessionListener(this);
rtpmgrs[i].addReceiveStreamListener(this);
ipAddr=InetAddress.getByName(session.addr);
if(ipAddr.isMulticastAddress()){
localAddr=new SessionAddress(ipAddr,session.port,session.ttl);
destAddr=new SessionAddress(ipAddr,session.port,session.ttl);
}else{
localAddr=new SessionAddress(InetAddress.getLocalHost(),session.port);
destAddr=new SessionAddress(ipAddr,session.port);
rtpmgrs[i].initialize(localAddr);
BufferControl bc=(BufferControl)rtpmgrs[i].getControl("javax.media.control.BufferControl");
if(bc!=null)
bc.setBufferLength(600);
rtpmgrs[i].addTarget(destAddr);
}catch(Exception ex){
System.out.println(" --X Cannot create RTP Session "+ex.getMessage());
long currentTime=System.currentTimeMillis();
long waitingDuration=10000;
try{
synchronized(myDataSync){
while(!dataReceived && (System.currentTimeMillis() - currentTime < waitingDuration)){
if(!dataReceived){
myDataSync.wait(1000);
}catch(Exception ex){
System.out.println(" --X myDataSync interrupted...");
if(!dataReceived){
System.out.println(" No RTP Stream Data is received.." );
public void destroy()
for(int i=0;i<currentParticipant.size();i++){
//if(player!=null)
((MyPlayList)currentParticipant.elementAt(i)).close();
// Loop through the RTP Managers
// -> Remove the stream listener
// -> Remove the target address
// -> Dispose the RTP Manager for garbage collection
currentParticipant.removeAllElements();
for(int i=0;i<rtpmgrs.length;i++){
if(rtpmgrs[i]!=null){
rtpmgrs[i].removeReceiveStreamListener(this);
rtpmgrs[i].removeTargets(" Closing session..");
rtpmgrs[i].dispose();
rtpmgrs[i]=null;
MyPlayList find(Player pl){
for(int i=0;i<currentParticipant.size();i++){
MyPlayList mpl=(MyPlayList)currentParticipant.elementAt(i);
if(mpl.clientPlay==pl)
return mpl;
return null;
MyPlayList find(ReceiveStream rs){
for(int i=0;i<currentParticipant.size();i++){
MyPlayList mpl=(MyPlayList)currentParticipant.elementAt(i);
if(mpl.stream==rs)
return mpl;
return null;
* ReceiveStream Listener function *
public synchronized void update(ReceiveStreamEvent rse)
RTPManager mgr=(RTPManager)rse.getSource();
ReceiveStream stream=rse.getReceiveStream();
Participant participant=rse.getParticipant();
if(rse instanceof RemotePayloadChangeEvent){
System.out.println(" -- Received Payload Change Event..");
System.out.println(" Sorry, no payload change is allowed.");
}else if(rse instanceof NewReceiveStreamEvent){
try{
// Once the new stream is detected, create the datasource
stream=((NewReceiveStreamEvent)rse).getReceiveStream();
DataSource outputDS=stream.getDataSource();
// Get RTP Controller to find the format
RTPControl rtpctl=(RTPControl)outputDS.getControl("javax.media.rtp.RTPControl");
if(rtpctl!=null){
System.out.println(" -> Received new rtP stream: "+rtpctl.getFormat());
}else
System.out.println(" -> Received new RTP stream");
if(participant!=null){
System.out.println(" -> New stream received from: "+participant.getCNAME());
}else{
System.out.println(" -> New stream detected... ");
player=Manager.createPlayer(outputDS);
if(player==null)
return;
System.out.println(" - Player is created...");
player.addControllerListener(this);
player.realize();
// Helper class to identify the player and stream
MyPlayList mpl=new MyPlayList(player,stream);
// Add the helper class object to Vector
currentParticipant.addElement(mpl);
// Notify initializePlayer() that a new stream has arrived
synchronized(myDataSync){
dataReceived=true;
myDataSync.notifyAll();
}catch(Exception ex){
System.out.println(" --X NewReceiveStream Exception: "+ex.getMessage());
return;
}else if(rse instanceof ByeEvent){
System.out.println(" - BYE packet received from "+participant.getCNAME());
MyPlayList mpls=find(stream);
if(player!=mpls){
mpls.close();
currentParticipant.removeElement(mpls);
if(mgr!=null){
mgr.removeReceiveStreamListener(this);
mgr.removeTargets(" Closing session..");
mgr.dispose();
mgr=null;
}else if(rse instanceof StreamMappedEvent){
if(stream!=null && stream.getDataSource()!=null){
DataSource myds=stream.getDataSource();
RTPControl rtpctrl=(RTPControl)myds.getControl("javax.media.rtp.RTPControl");
System.out.println(" -> The previously unidentified stream ");
if(rtpctrl!=null)
System.out.println(" "+rtpctrl.getFormat());
System.out.println(" has been identified as sent by :"+participant.getCNAME());
* Session Listener
public void update(SessionEvent sesevt)
if(sesevt instanceof NewParticipantEvent){
Participant part=((NewParticipantEvent)sesevt).getParticipant();
System.out.println(" -> A new partcipant has joined :"+part.getCNAME());
* ControllerListener for Players
public synchronized void controllerUpdate(ControllerEvent ce)
Player p=(Player)ce.getSource();
if(p==null)
return;
if(ce instanceof RealizeCompleteEvent){
MyPlayList mpls=find(p);
if(mpls!=null){
p.start();
if(p.getVisualComponent()!=null){
panel.add(player.getVisualComponent());
panel.validate();
if(ce instanceof ControllerErrorEvent){
p.removeControllerListener(this);
MyPlayList mpls=find(p);
if(mpls!=null){
// Close the player
// Remove the player helper class object from the list
p.close();
currentParticipant.removeElement(mpls);
System.out.println("Receiver internal error: "+ce);
class SessionLabel{
public String addr=null;
public int port;
public int ttl;
SessionLabel(String session) throws IllegalArgumentException
int off;
String portStr=null;
String ttlStr=null;
if(session!=null && session.length() >0){
while(session.length()>1 && session.charAt(0)=='/')
session=session.substring(1);
off=session.indexOf('/');
if(off==-1){
if(!session.equals(""))
addr=session;
}else{
addr=session.substring(0,off);
session=session.substring(off+1);
off=session.indexOf('/');
if(off==-1){
if(!session.equals(""))
portStr=session;
}else{
portStr=session.substring(0,off);
session=session.substring(off+1);
off=session.indexOf('/');
if(off==-1){
if(!session.equals(""))
ttlStr=session;
}else{
ttlStr=session.substring(0,off);
if(addr==null)
throw new IllegalArgumentException();
if(portStr!=null)
try{
Integer ints=Integer.valueOf(portStr);
if(ints!=null)
port=ints.intValue();
}catch(Throwable t){
System.out.println(" --X PortStr Error..");
throw new IllegalArgumentException();
}else
throw new IllegalArgumentException();
if(ttlStr!=null){
try{
Integer intsttl=Integer.valueOf(ttlStr);
if(intsttl!=null)
ttl=intsttl.intValue();
}catch(Throwable t){
System.out.println(" --X PortStr Error..");
throw new IllegalArgumentException();
class MyPlayList{
Player clientPlay;
ReceiveStream stream;
MyPlayList(Player p,ReceiveStream rs){
clientPlay=p;
stream=rs;
public void close()
clientPlay.close(); -
DOM parsing In Applet (URgent)
Is it possible to implement DOM parsing in Applet?
I am getting classnotfoundException .
I am giving the code below. pl read the code.
Applet.(parserapplet.java)
=========================
import java.io.*;
import java.awt.*;
import java.net.*;
import java.util.*;
import java.applet.*;
import com.security.*;
// for DOM parsing ....
import javax.xml.parsers.*;
import org.xml.sax.*;
import org.w3c.dom.Document;
import org.w3c.dom.DOMException;
public class parserapplet extends Applet
public void init()
public void start()
try
if (Class.forName("com.ms.security.PolicyEngine") != null)
{ // required for IE
PolicyEngine.assertPermission( PermissionID.SYSTEM );
catch (Throwable cnfe)
System.out.println("Policy Engine Exception: " + cnfe);
try
String str = "<?xml
version=\"1.0\"?><html><body></body></html>";
ByteArrayInputStream bis = new
ByteArrayInputStream(str.getBytes());
System.out.println("After creating input stream");
BufferedInputStream bufIn = new BufferedInputStream(new
DataInputStream(bis));
parseXMLMessage (bufIn);
catch(Exception e){}
// Actual DOM parsing goes here.....
public void parseXMLMessage(InputStream xmlMessage)
Document document = null;
DocumentBuilder documentBuilder = null;
DocumentBuilderFactory documentBuilderFactory = null;
try
documentBuilderFactory = DocumentBuilderFactory.newInstance();
documentBuilder = documentBuilderFactory.newDocumentBuilder();
document = documentBuilder.parse(xmlMessage);
System.out.println("Document node: " + document);
catch(FactoryConfigurationError fce)
System.out.println("Exception Factory configuration error " + fce);
catch(ParserConfigurationException pce)
System.out.println("Exception Parser configuration Exception " pce);
catch(SAXException saxe)
System.out.println("Exception SAX error " + saxe);
catch(Exception e)
System.out.println("Exception " + e);
Html code:
=========
<html>
<body>
<APPLET code="parserapplet.class" archive = "xalan.jar" width=0
height=0
MAYSCRIPT>
<param name=cabbase value=MyApplet.cab>
</APPLET>
</body>
</html>
I have signed the Applet using signcode utility and i have put the
parserapplet.class in the MyApplet cab file and signed it. On invoking
the html file, it request for permission, and after clicking yes, the
applet loads.Fine.
No problem upto this stage.
But after loading of the applet the following exception is thrown in
Javaconsole.
Exception:
=========
com.ms.security.SecurityExceptionEx[Host]: cannot access file
C:\WINNT\Java\lib\jaxp.properties
at com/ms/security/permissions/FileIOPermission.check
at com/ms/security/PolicyEngine.deepCheck
at com/ms/security/PolicyEngine.checkPermission
at com/ms/security/StandardSecurityManager.chk
at com/ms/security/StandardSecurityManager.checkRead
at java/io/File.exists
at javax/xml/parsers/DocumentBuilderFactory.findFactory
at javax/xml/parsers/DocumentBuilderFactory.newInstance
at parserapplet.parseXMLMessage
at parserapplet.init
at com/ms/applet/AppletPanel.securedCall0
at com/ms/applet/AppletPanel.securedCall
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.run
at java/lang/Thread.run
javax.xml.parsers.FactoryConfigurationError:
java.lang.ClassNotFoundException:
org/apache/crimson/jaxp/DocumentBuilderFactoryImpl
at javax/xml/parsers/DocumentBuilderFactory.newInstance
at parserapplet.parseXMLMessage
at parserapplet.init
at com/ms/applet/AppletPanel.securedCall0
at com/ms/applet/AppletPanel.securedCall
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.run
at java/lang/Thread.run
I dont know which .jar file to archive (i tried xalan,crimson, jaxp
but which of no use). I was surprised why the security Exception is
thrown , when parsing.
I have not accessed the System files!( but it searches for
jaxp.properties file!). I think the jar file is not downloaded. How to
verify that it is downloaded in applet?
The above code is only for sample.
If anybody who knows how to correct it please mail me at:
"[email protected]" with corrected code. I want this very
urgently.
Help meeeeeeeeeeeeeeeeeeee!!!!!
Prasanna.Have you found the answer to this problem? I am having a similar problem when running the parser in an ActiveX Bean.
THanks
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