Web chat useing java

I want to develop a web chat useing java for my new web project!How can i do it.

UsthadThegreat wrote:
I want to develop a web chat useing java for my new web project!How can i do it.1. Learn basic Java.
2. Learn intermediate to advanced topics such as multithreading and socket communication.
3. Develop requirements.
4. Develop an architecture and design.
5. Use the results of steps 1-4 to write Java code that realizes your web chat application.

Similar Messages

Creating Web Services using Java Implementation

Hi,
This is quite a general question on how to create a Web Service using Java Implementation that needs to conform to a client XML schema.
Here are my Version specs,
I am using Jdeveloper 10.1.3.4.0 and deploying onto OAS 10.1.3.
I will be creating a J2ee 1.4 (JAX-RPC) Web Service using Document/Wrapped style.
I have been provided an XML schema from the client which is quite complex.
Using a top-down approach, I can create my WSDL file and import the XML Schema for my type definitions.
The Web service aim is to accept some parameters and return some data from the Oracle Database. The
XML response from the web service must conform to the element, attribute definitions in the provided XML schema.
From a Java implementation approach, what is the best (simplest or quickest) way to retrieve data from the Oracle
tables and map each fields/column to the required XML output (defined in the XML schema).
I'm not too concerned with using Java to retrieve data from the Database, more with how I can map the data returned
to the required output. Can this mapping task be controlled within the Java program?
Thanks in advance.

Hi,
This is quite a general question on how to create a Web Service using Java Implementation that needs to conform to a client XML schema.
Here are my Version specs,
I am using Jdeveloper 10.1.3.4.0 and deploying onto OAS 10.1.3.
I will be creating a J2ee 1.4 (JAX-RPC) Web Service using Document/Wrapped style.
I have been provided an XML schema from the client which is quite complex.
Using a top-down approach, I can create my WSDL file and import the XML Schema for my type definitions.
The Web service aim is to accept some parameters and return some data from the Oracle Database. The
XML response from the web service must conform to the element, attribute definitions in the provided XML schema.
From a Java implementation approach, what is the best (simplest or quickest) way to retrieve data from the Oracle
tables and map each fields/column to the required XML output (defined in the XML schema).
I'm not too concerned with using Java to retrieve data from the Database, more with how I can map the data returned
to the required output. Can this mapping task be controlled within the Java program?
Thanks in advance.

Create web service using java class

Hi,
I created the web service using java class then i deployed this web service in to the weblogic admin server.when i tested this process it is working fine.
when I tested The generated WSDL to this process in browser(IE). it is not working.
I need to to invoke this webservice from another BPEL but this WSDL is not working.

Hi,
when i created the webservice in jdeveloper by default it is connected to integrated weblogic server and generates this wsdl.
http://localhost:7101/helloApplication-javaexcel-context-root/MyWebService1Soap12HttpPort?WSDL
then I deployed this webservice in to the Adminserver.it gives the following URL.
http://192.168.56.1:7001/extracExcelToCSV-extractExcelToCSV-context-root/ExtractExcelToCSVSoap12HttpPort?wsdl
This URL is not working but when i tested this process it is working fine.
It is giving below error when i try to invoke from jdeveloper
Error while reading wsdl file
caused by:java.net.connectExcepption :Connection timed out:connect

How to embed 3D models in web page using JAVA?

Hello
I'm doing a project at University to create a virtual tour of a village. I am creating the buildings in MAYA using polygon planes and cubes and then exporting to VRML.
I plan to embed each individual model into a separate web page. Then when the user clicks on a location in a 2D map they will be taken to the web page containing that building.
However, I can't work out how to embed these 3D models into web pages using JAVA. Can anyone help me with this, please?
Also, I've been told to use JAVA 3D to interact with the project but am unclear as to how JAVA 3D would be used in this project - aqny ideas/suggestions welcome!
M.

If you use Java-plugin, you can embed Java3D in a web page.
Here is the URL(http://www.geovista.psu.edu/products/demos/LorenzAttractor3D/index.html) which used Java3D.
I hope this helps.
Masa

Printing Web contents using Java Fx.

Hi,
How to Print Web contents using Java Fx application? ie, displaying a web page as it is on the application..........
Thanks......

You might want to try to SwingComponentize third-party Java web browser (JDic, NativeSwing).
Another recommended alternative is to wait for the JWebPane because it is designed to work with JavaFX (http://weblogs.java.net/blog/alex2d/archive/2008/12/jwebpane_projec_1.html). No date is given to JWebPane's release though. JWebPane will be my Christmas's wish.

Resources for implementing HTTP web server using java

hi ,
Thanks for giving your precious time in reading the message.I want to build a HTTP web server using java,which will run on my machine and I can communicate with it through web browser(IE) using HTTP requests and response.
I know java language, but quite new to network programming.I want to gain enough knowledge on network programming in java.Can you please suggest me good books or any other resources available on the internet for the required subject.Any help will be greatly appreciated.
my email-id is : [email protected]

hi there my friend,
I am writing my own web server too. in w3c there is a sample web server called jigsaw-open source :) and simple-
I do think it worth trying.
you can contact me if you want to share some source and info. cause I will.
[email protected]
but within 2 weeks I will be back for studying for my web server. you have to wait for a while.

How to access .asmx Web Service using JAVA? Newbie

Hello Experts,
Currently, I have a project where in I have to access a ,NET web service. It is made of C#. I just want to ask how will I start the accessing process? I made this simple equation on how my project is.
Java Project + C#.Net Web Service = Integration
1. Do i need to create a Web Service too for the Java Project? If yes, What are the necessary tools needed for the creation of this Java Web Service?
2. The .NET Web Service is available online. (It is made by other people).
3. Based on the equation, what is the equivalent technology for the + sign?
4. Can you site a concrete example for accessing a web service?
5. I'm new here. Totally I have no idea where to start.
6. Thank you experts.
Edited by: Benedict.Aluan on 05 30, 08 1:38 PM
Edited by: Benedict.Aluan on 05 30, 08 1:39 PM

Hello
Thanks a lot for your help ...
I am developing simple J2EE based web service client using IBM WSAD 5.1. I have used the following code to call .asmx web service in Java
String url = "http://www.w3schools.com/webservices/tempconvert.asmx?wsdl";
     String namespace = "http://tempuri.org/";
     name = request.getParameter("txtName");
     try
          System.out.println("In Internet Service");
          ServiceFactory factory = ServiceFactory.newInstance();
          Service serv = factory.createService(new URL(url),new QName(namespace,"TempConvert"));
          System.out.println("Got Service......");
          Call obj = (Call)serv.createCall();
          System.out.println("Got Call......");
          obj.setProperty(Call.ENCODINGSTYLE_URI_PROPERTY,"");
          obj.setProperty(Call.OPERATION_STYLE_PROPERTY,"wrapped");
          obj.setTargetEndpointAddress(url);
          obj.setPortTypeName(new QName(namespace,"TempConvertSoap"));
          obj.setOperationName(new QName(namespace,"FahrenheitToCelsius"));
          obj.addParameter("param1",XMLType.XSD_STRING,String.class,ParameterMode.IN);
          obj.setReturnType(XMLType.XSD_STRING);
          System.out.println("Parameters Set.....");
          Object[] params = new Object[]{name};
          k = (String)obj.invoke(params);
          System.out.println("Result: "+k);
     catch(Exception e)
        System.out.println("Exception is : "+e);
    }But this code is throwing exception that
Invalid Address "http://www.w3schools.com/webservices/tempconvert.asmx?wsdl"I have also tried this URL with Java Proxy. But it showing the same error.
Plz can u tell me how to access .asmx web service ?
Waiting 4 reply.

Call web service using Java code

Hi all,
Sorry if this question sounds stupid. I am new to web services.
I am having a web service written in oracle, using soap-api. I want to call this web service in Java application, parse the result and save it in the database.
Can anyone please guide me on this or give me some related link. I tried searching on google, tried to implement some of the solutions I got in search results, but it was not that helpful.
Waiting for your help. Please guide me through this.
Waiting for your replies. Thanks in advance.
Regards,
Kinnaree

Hi all,
From my java code, I tried giving
String testStr = service.search("and formatted_address like '%Test House%'");
This service method is defined on my SearchPortType.java file. This and the searchClient.java, as I mentioned earlier are auto generated files by myeclipse IDE. I gave WSDL URL, which generated these two files.
This helped me invoking the service, but it gives me an exception as below:
Exception in thread "main" org.codehaus.xfire.XFireRuntimeException: Could not invoke service.. Nested exception is org.codehaus.xfire.fault.XFireFault: Couldn't send message.
org.codehaus.xfire.fault.XFireFault: Couldn't send message.
     at org.codehaus.xfire.fault.XFireFault.createFault(XFireFault.java:89)
     at org.codehaus.xfire.handler.OutMessageSender.invoke(OutMessageSender.java:30)
     at org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:131)
     at org.codehaus.xfire.client.Invocation.invoke(Invocation.java:79)
     at org.codehaus.xfire.client.Invocation.invoke(Invocation.java:114)
     at org.codehaus.xfire.client.Client.invoke(Client.java:336)
     at org.codehaus.xfire.client.XFireProxy.handleRequest(XFireProxy.java:77)
     at org.codehaus.xfire.client.XFireProxy.invoke(XFireProxy.java:57)
     at $Proxy8.search(Unknown Source)
     at com.imriel.client.cbre.chelsea.util.test.searchClient.main(searchClient.java:104)
Caused by: org.codehaus.xfire.XFireException: Couldn't send message.
     at org.codehaus.xfire.transport.http.HttpChannel.sendViaClient(HttpChannel.java:145)
     at org.codehaus.xfire.transport.http.HttpChannel.send(HttpChannel.java:48)
     at org.codehaus.xfire.handler.OutMessageSender.invoke(OutMessageSender.java:26)
     ... 8 more
Caused by: java.net.ConnectException: Connection timed out: connect
     at java.net.PlainSocketImpl.socketConnect(Native Method)
     at java.net.PlainSocketImpl.doConnect(Unknown Source)
     at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
     at java.net.PlainSocketImpl.connect(Unknown Source)
     at java.net.SocksSocketImpl.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at java.net.Socket.<init>(Unknown Source)
     at java.net.Socket.<init>(Unknown Source)
     at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:79)
     at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:121)
     at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:706)
     at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1321)
     at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:386)
     at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:170)
     at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396)
     at org.codehaus.xfire.transport.http.CommonsHttpMessageSender.send(CommonsHttpMessageSender.java:369)
     at org.codehaus.xfire.transport.http.HttpChannel.sendViaClient(HttpChannel.java:123)
     ... 10 more
Any ideas, where I am wrong????
Regards,
Kinnaree

OpenGL in C++ displayed on a web browser using java??

I have a OpenGL application written in CPP that I would like to display on a web browser.
I was wondering if their is a way to do this using java. Maybe somekind of java wrap.
Thank you

Maybe some kind of ActiveX control perhaps ?
Not too familar with ActiveX programming though...
regards,
Owen

Voice chat using java rtp

hi
i got voice transmission and receiving in java rtp but some what delay is there
i tried reduce the delay but still i have problem
i tried with GSM_RTP,LINEAR,ULAW ,etc but still delay is there
any one help me please
source code is avaliable in :
http://javasolution.blogspot.com/2007/04/simple-application-for-voice.html

bendash wrote:
My questions are:
- Is it a good idea to implement a voice chat feature using the Java Sound API, something similar to the example above on the link?If you need to do the voice chat in Java for whatever reason, then yes...
- Is it possible to somehow fix that delay? if yes, then how?From what I saw from glancing at that code, it's transporting the audio streams via a TCP stream. TCP streams retransmit data when it's lost, which is actually something that you don't want in a real-time application. If you lose some packets with audio data, and those are retransmitted, your receiver is getting progressively more and more behind (because the audio stream has to wait for the missing bytes to arrive before it can continue.
For a simple application like yours, your best bet would be to divide the audio stream into buffer-sized chunks (1024 bytes might be a good buffer size), and transmit those in UDP packets. Make sure to add a packet number to the UDP packets. On the other end, just write some code so that out of order packets are ignored (so if packet 4 arrives after packet 6, for instance, you drop that packet rather than playing it after 6... so you'd get 123(silence)567...

How to access PL/SQL Web Services using java

New to Webservices. Created PL/SQL Web Service using JDeveloper. Vendor is not sure how to access it using java. Can anyone please help to point in the right direction or provide some sample ?

So if I'm correct you have already exposed a PL/SQL procedure or function as web service?
In that case you can generate a proxy (client) for the generated web service using JDeveloper. It will generate Java code which invokes the web service.
See the wizard in JDeveloper, it should be in the same category as the create PL/SQL web service wizard.
Regards, Ronald

Monitor a web server using java

Hi All,
How can we monitor the webserver and its performance using java? what are the steps we should follow to do it and which java package i should concentrate to do this task?Give me some ideas about this?
regards,
Maheshwaran Devaraj

I should monitor the up time, response time, status of server , and If it is going to Not responding state I should recover the server and also need to generate the report about the server performance.

Connecting to http web site using java socket

Hi,
Sockets in Java I believe are reusable. Once created, it can be used to send a request using its input stream and get back a response using the output stream. My problem is I am trying to connect to a website using java socket but I am unable to get a response (though the same works fine I use URL and URLConnection). Can anyone tell me whats wrong? Below is the client program:
public class HttpAdapterTest {
     public static void main(String[] args) {
          try {
               Socket socket = new Socket("www.google.com", 80);
               BufferedWriter out = new BufferedWriter(
                              new OutputStreamWriter(socket.getOutputStream()));
               out.write("GET /help/basics.html HTTP/1.1");
               out.flush();
               BufferedReader in = new BufferedReader(
                                        new InputStreamReader(ucon.getInputStream()));
               String line = null;
               while((line = in.readLine()) != null) {
                    System.out.println(line);
               in.close();
          } catch (Exception e) {
               e.printStackTrace();
}

Look at the JSSE examples. You need to setup a key store, add the jsse jars to your classpath, yadda, yadda, yadda....

Web Services using Java 6

Hi,
Well, I've been very enthusiastic in implementing a new application that's taking advantage of the newly introduced technology that Java 6 has to offer, instant web services that is. I've implemented the web services and was also able to launch the internal server that comes with the JDK. I must admit that life became really easy due to those introduced technologies, it saved me a lot of time. Furthermore, now I've reached a point where an application I'm integrating with needs to call my server by invoking a simple http request, however, since my server only provides web services I'm kind of stuck and can't think of an easy (fast) solution... I wouldn't like returning to the frustrating old days where I had to use Tomcat and also Axis in order to support both of these functionalities... the question is whether there is a simple way to also expose a simple servlet by using the internal Java 6 server or maybe there is a way to expose a webservice that is actually a servlet...
your answers are very appreciated :)
thanks,
Gil.
Edited by: GilBa on Apr 15, 2009 2:05 PM

Hi,
well, I've taken your advice seriously and immediately turned into embedding Jetty into my application...
However, due to the fact that I'm a newbie to both Jetty and Web Services I have gotten to a point where I no longer manage to continue :-(
In order to enable web services I've followed this guideline ([http://gorik.wordpress.com/2008/03/15/jax-ws-and-jetty/]), however, it seems to mislead in some points or at least lacks some vital information I suppose...
I could not successfully access my webservice even after doing the following actions:
1 - Writing web service source code and using webservice annotations.
2 - Successfully generating wsdl and xsd files
3 - Successfully running Jetty server
4 - created folders under jetty\webapps\ : myApplication\WEB-INF, myApplication\wsdl
5 - copied jar file holding the webservice into WEB-INF lib, copied the wsdl under the wsdl lib
6 - created a web.xml file under myApplication with the following content:
<web-app version="2.4? mlns="http://java.sun.com/xml/ns/j2ee" xsi:schemalocation="http://java.sun.com/xml/ns/j2ee [http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd]">
<description>fromwsdl</description>
<display-name>fromwsdl</display-name></web-app>
<listener>
<listener-class>com.sun.xml.ws.transport.http.servlet.WSServletContextListener</listener-class></listener> <servlet>
<description>JAX-WS endpoint - fromwsdl</description>
<display-name>fromwsdl</display-name>
<servlet-name>WebServices</servlet-name>
<servlet-class>com.sun.xml.ws.transport.http.servlet.WSServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>WebServices</servlet-name>
<url-pattern>/NadlanWebServices</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>60</session-timeout>
</session-config>
{code}
and what happens when I launch Jetty server is that it claims that it cannot find index.jsp file which is the file that's configured in jetty/etc/webdefault.xml,
though clearly, it should have not looked for this file due to the servlet mapping I've configured in the web.xml that appears above...
please help ....
thanks,

Widget Problem - Web Clip using Java Fails

I installed the Snow Leopard upgrade on my iMac yesterday. Since then, any Java web clips I had in Dashboard prior to the upgrade no longer work. I tried removing them and adding them back, but it didn't help. The Java clips work when accessed directly from Safari. They just don't load when accessed from Dashboard.
When the web clip tries to load if I click on the error's details, I get the following:
Java Plug-in 1.6.0_15
Using JRE version 1.6.0_15-b03-219 Java HotSpot(TM) Client VM
User home directory = /Users/stan
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
p: reload proxy configuration
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
Does anyone have a solution to this problem?

HI,
The most recent Software Update might help this unless you have already downloaded and installed it.
Go to the Apple Menu/Software Updates. If you don't have the Java for Mac OS 10.6 Update 1 installed the Software Update utility will download and install for you.
This update just became available yesterday.
You may also need to Trash and Dashboard preference file.
com.apple.dashboard.plist
~/Library/Preferences. Move that file to the Trash and restart your Mac.
Carolyn

Web chat useing java

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