Applet and external applcations

Hi at all, I'm new in java, I want to build a html page (+ applet, or other) that can execute an
external application, read and write files. This page is loaded from an Apache server (so through the network). Applet can solve my problem?
Thank.
FM

You want to execute this application on the client, the computer where the applet is running in a browser? Or do you want to execute it on the server, the computer where the HTML page came from?
If on the client, you can do this with an applet only if you sign the applet. If on the server, you can also do it but it depends on what it is you want to run.

Similar Messages

Socket communication failure between Java applet and C++ application

I have a java applet that connects to a C++ application via Java's ServerSocket and Socket objects. THe C++ application is using the Winsock 2 API. The applet and application are running on an NT workstation (SP 6) and using IE (5.5) For a very simple C++ test applications the communictions work fine. Once more code gets added to the C++ application the portion of the socket that C++ listens to seems to close. Upon performing a recv call the return value is a zero. Microsoft insists this is a sign the Java side has shut down the socket. The Java applet can still receive messages from the C++ app but C++ cannot receive responses from the Java side. Java throws no exceptions and an explicit check of the socket shows no errors. Again, what puzzles me is that it works for simple C++ applications. Are there any known conflicts between Java and C++ in this regard?
I have inlcuded the basic java code segments below.
/ run Method.
* This method is called by the Thread.start() method. This
* method is required for the implementation of the Runnable interface
* This method sets up the server side socket communication and
* contiuously loops looking for requests from a external
* socket.
* @author Chris Duke
public void run(){
     // create socket connections
     boolean success = false;
     try {
         cServerSocket = new ServerSocket(cPortID);
         System.out.println("Waiting for client to connect...");
         cClientSocket = cServerSocket.accept();
         System.out.println("Client connected");
         // Create a stream to read from the client
         cInStream = new BufferedReader(new InputStreamReader(
           cClientSocket.getInputStream()));
         // Create a stream to write to the client
         cOutStream = new PrintWriter(
           cClientSocket.getOutputStream(), true);
         success = true;
     }catch (IOException e) {
         System.out.println("CommSocket:Run - Socket Exception(1) " + e);
         success = false;
     // if the socket was successfully created, keep the thread running
     while (success){
         try{
            // check socket to see if it is still available for reading
            if (cInStream != null && cInStream.ready()){
                // check for an incoming message
                String message = ReceiveMessage();
                // Send message to listeners
                Event(message);
            if (cInStream == null){
                success = false;
                System.out.println("CommSocket:Run - shutdown");
         }catch (IOException e){
            System.out.println("CommSocket:Run - Socket not ready exception");
            break;
// SendMessage method -
* Sends a text message to a connected listener through port specified by portID
* @author Chris Duke
* @param String message - This will be the message sent out through the server
* socket's port specified by portID.
   public void SendMessage(String message){
      cOutStream.println(message);
      if (cOutStream.checkError() == true)
        System.out.println("SendMessage : Flush = Error");
      else{
        System.out.println("SendMessage : Flush - No Error");
   }

a very simple C++ test applications the communictions work fine. Once more code gets added to the C++ application the portion of the socket that C++ listens to seems to close.
This quite strongly implicates the extra code in the C++ App. The firstly thing I would try would be telnet. Try connecting to both versions of the C++ Application and manually reproducing a proper exchange.
a recv call the return value is a zero. Microsoft insists this is a sign the Java side has shut down the socket.
A correct implementation of recv should return the number of bytes received, or -1 for an error. A zero return indicates no bytes received not a socket closed/error. This sounds like FUD to me.
Are there any known conflicts between Java and C++ in this regard?
I can see no obvious faults, though the code is incomplete, I don't think it's an sockets implementation issue, at either end, it sounds more likely to be a protocol/handshaking bug in the C++ App.

From Applet to "external world" (continued)

this question is an extension to a previous thread (http://forum.java.sun.com/thread.jsp?forum=31&thread=431830)
URL callScriptURL = new URL("javascript:setGlob(" + param + ")");
seems to generate a MalformedURLException:
this is what I got::
java.net.MalformedURLException: unknown protocol: javascript
In order to get rid of this exception, should I use the address of the html page (the html page that calls the Applet [and can I get it from the Applet with a special function without passing it as a parameter to the applet?]) followed by a # sign, then the javascript:setGlob.... string ?

No, it won't work. I'm not aware of any means to include a Javascript call in an URL for the browser to execute. This would be an HTTP thing, which wouldn't be able to assume the existence of Javascript.
The javascript: protocol works only in the browser because the mechanism java.net.URL uses to create URL objects gets it's protocol handlers from the browser directly, and if the browser supports this protocol, it works, but browsers without javascript support probably would throw this exception too. It's the same problem with https: protocols outside applets in regular apps, without including the a protocol handler class to support it.
Of course, you can write your own protocol handler for javascript: (or someone may have one already), but what would you do with it anyway. You probably wouldn't be able to pass this to a browser from an external application anyway.

Time Capsule and External HD as Network Attached Storage

I was wondering if I can
a. Attached and external hard drive to my Time Capsule and access is wirelessly?
b. Back up to that external hard drive using Time Machine?
c. Access that external hard drive and Time Capsule from a remote place off site?
Thanks

a. Yes
b. I think so. But why not just use the TCs hard disk for TM backups?
c. Apparently so based on these instructions I have found: (Haven't tried it myself)
In the Finder preferences check the box "show server" to mount to desktop.
Under Airport Utility:
Disks - check over wan and check file sharing and write down the ip address
Under the Finder, use the GO function to find your server ie the hard drive on the TC. In the window provided type afp://ip address then password if applicable. The hard drive should mount and be shown on the desktop.

What is main diff b/w imported Archives and External Defination in IR

What is main diff b/w imported Archives and External Defination in IR

Hi Vijay,
ED-standard schema for describing the message structure.If you have the structure provided to you from some external application you can use it in PI directly without recreating in PI.you can import following formats which are used to describe message schema
WSDL (Web Service Description Language),
XSD (XML Schema Definition Language),
DTDs (Document Type Definitions)
Imported Archives: its used basically for java and xslt mapping where you create the required mapping externally using some tools
(java-eclipse/NWDS .XSLT-stylus studio).You can also implement XSLT and Java mappingsf and save them as archives in the Integration Repository.
read More details here
[ED|http://help.sap.com/saphelp_nwesrce/helpdata/en/26/9e97b0f525d743882936c2d6f375c7/content.htm]
[Imported Archives|http://help.sap.com/saphelp_nw04/helpdata/en/4c/b2ad3de2d76b3be10000000a114084/content.htm]
Regards,
Srinivas

Difference Between Applet and Swing

Difference Between Applet and Swing

The advantages and disadvantages of both applets and Swing are the small fluffy elephants you get inside of every box. They're quite well trained and can skeletonize your neighbors' annoying pets upon command.

Macbook pro 15" mid 2010 i spilled water on keyboard now it wont power on if the battery is connected and the keys on keyboard doesnt work it works fine with no battery and external keyboard if i order a battery and new keyboard will every else work again

macbook pro 15" mid 2010 i spilled water on keyboard now it wont power on if the battery is connected and the keys on keyboard doesnt work it works fine with no battery and external keyboard if i order a battery and new keyboard will every else work again lik it did before

If you have records that show that you've taken your MacBook Pro in for a year to fix the machine, I would escalate the problem to Apple Customer Relations - unfortunately I don't have a number for Spain.
It would only seem logical to me that if you've been trying to have the machine repaired during the time that the 'recall' was in effect that you should be eligible for a new logic board. But only customer relations will be able to make that call.
Good luck - take the issue as high up the food chain as you can and see what happens.
Clinton

Mid 2010 Macbook Pro sleep and external display problem

I recently upgraded to the new 2010 15 inch core i7 Macbook Pro. The problem i have is that it will not detect an external display (23inch Cinema) after waking from sleep. This happens after using the display to extend the desktop and also when using the Macbook in closed mode.
I've managed to get it to detect the display only after either restarting the Macbook completely or by going into energy saver and switching to dedicated graphics then going back to detect display.
It seems that when on integrated graphics it doesn't register that an external display is connected. If i leave a program open and running that causes the dedicated graphics to kick in then it works ok. If i close all programs, shut the macbook pros lid, computer sleeps and external display shuts off. If i click the mouse to wake with lid closed, apple logo lights, machine starts up few seconds later macbook returns to sleep. If i open the screen the machine wakes as normal but the external monitor doesn't.
Any help is much appreciated as its starting to frustrate me now...
Many thanks
oh and im running OSX 10.6.3

I thought it was intermittent to begin with until i started looking into it. By leaving programs open, like aperture, before i put the machine to sleep it appears to wake the external monitor up without a problem. If i shut all programs or leave basic things open like safari and mail which don't require the dedicated graphics, then upon wake it wont register an external screen is connected.
Manually detecting displays in settings doesn't work.
Disconnecting and reconnecting mini display port doesn't work.
Turning off power to cinema display and powering back up doesn't work.
To get the display going again its either 1) turn off macbook pro and re-boot or 2) re-start the machine then the display is automatically recognised. Or 3) launch a programme that kicks in dedicated graphics then manually go in and detect displays again..... like magic the display then springs to life.
No ideas anyone??

IIS, Javascript, Signed Applet and ASP Blank Page Problem

Hi,
I'm having a problem using a Signed Applet in a site that runs in a IIS (Windows Server 2003).
My aspx web page uses the applet to read my smart card and get information from it.
This applet uses an auxiliar dll (stored in a second Signed Jar file) in order to read the information from my smart card.
The way the solution is design:
1) Aspx page is asked from server
2) Internet Explorer recieve the page and asks the server for it content (images, applet, javascripts, etc)
3) After this the JVM runs (console opens)
4) After the Aspx page render fully a javascript register onload fires and call an applet method
5) Applet receive the call and run the logic of the method:
     - reads the smart card;
     - calls Javascript function in order to fill aspx fields with information from smart card
     - calls Javascript function the simulates a click in a botton of aspx page (in order to call server side part sending data readed from smart card to server)
5) The server makes some logic with the information receive and responds to client registering in aspx page a call to another Javascrit function
6) The client received the asnwer from server and runs the Javascript function registered on step 5)
     This Javascript calls another method from applet and runs the following logic:
     - reads more information from smart card;
     - call javascript function in order to fill more fields of aspx page with the information readed
     - calls Javascript function the simulates a click in a botton of aspx page (in order to call server side part sending data readed from smart card to server)
7) The server makes some logic and call another pages with no Applets
8) Client asks for a second page with the same applet and we start with another logic express on steps 1);2);3),4);5) and then 7).
This is all ok, until sometimes the server stop responding correcly for requests regarding this two pages with the Applet.
When this happens the server just responds with a blank page.
     - with fiddler I can seer the request for the aspx page (that uses the applet)
     - but server responds with a blank html page
The JVM doesn't fire.
The IIS log don't show errors.
The eventviewer doesn't show errors.
The problem is solved with an IIS reset or a Application Pool reset.
After a while the problem returns.
This problem occours for other user in another machine, the server just stops responding correcly to request regarding pages with applets, the other pages still continue to work.
If we disable Java Control Panel->Advanced->Java Plug-in->Enable the next-generation Java Plug-in the problem seend to stop, but we can't force all clients to disable this option right?
Or there is a way to force the Applet to run with this option disabled?
As anyone experience similar problem?
Regards,
OF

This is all ok, until sometimes the server stop responding correcly for requests regarding this two pages with the Applet.
When this happens the server just responds with a blank page.
- with fiddler I can seer the request for the aspx page (that uses the applet)
- but server responds with a blank html pageWell, if http requests look identical in case of success and failure (pay attention to cookies, etc) then it has to be something on the server side.
It could be that server gets into this wrong state because of previous requests made by applet but it is hard to tell.
I am not clear how old/new plugin can make a difference unless your applets run in the legacy mode (i.e. you are actually trying to reuse SAME instance of the applet when
it is loaded next time).
I'd start with
1) carefully comparing good/bad sessions
2) checking whether server will serve correct response to another client when it serves "bad" page for current client
3) add debug statements to aspx - it is scripted page, may be some condition is not met and then it returns blank?
4) record all http requests in one session until you get to "error" state and then use any http server testing tool to "replay" this set of requests.
You should be able to get server into the same state without use of applet. Then you can try to tweak set of requests to see what makes a difference.

DNS Forwarding Same Internal and External Zone

Hi,<o:p></o:p>
So we have decided that we want our internal domain to be the same as our external domain e.g. domain.uk. I understand that split DNS can be used
to fulfil this requirement but is it possible to set up a forward so if the DNS entry is not available in the internal zone it will forward onto one of our external name servers where it can resolve?<o:p></o:p>
We are basically trying to avoid having to add the entry on both external and internal DNS servers for it to resolve. So far I have added the external name servers to
the forwarders and disabled root hints which didn’t work. I’ve tried to add a conditional forwarder but it says the zone already exists. It seems the only to achieve the internal resolution is by creating the DNS entry both internally and externally.<o:p></o:p>
Does anyone know if this is the case? It seems strange that you couldn’t point the DNS to another external name server for resolution? <o:p></o:p>
Any help would be appreciated.<o:p></o:p>

You must ask in networking forum
https://social.technet.microsoft.com/Forums/en-US/home?forum=winserverNIS&filter=alltypes&sort=lastpostdesc

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 this

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)"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

Delivery report shows status of Pending for external address. Email sent to both internal and external addresses.

We have an Exchange 2013 on-premise server and seem to have an issue with emails sent to internal and external users at the same time.
The issue came to light because someone sent an email to 44 recipients, of which one was internal. None of the external recipients received the email. I checked the delivery report in the EAC and found the internal email marked as 'Delivered' and all of
the external ones marked as 'Pending'. I checked the queues and there were none. I did some testing and sent an email to just one of the external addresses on the list, it arrived. I tried sending the email again to all of the recipients, the external ones
all showed 'Pending'. I tried it again, but this time excluded the internal email address and all of the 43 external emails were immediately delivered.
So it seems that the issue only arises when we are sending to both internal and external addresses.
I then tried a test email to one internal address and one external address. The Delivery report says that the internal address was delivered immediately, while the external address is 'Pending' and gives more information saying: 'Message delivery is taking
longer than expected. There may be system delays. For more information, contact your helpdesk.'. To add further mystery to this, the email was actually delivered.
So, I have two concerns:
First is seems that some emails sent both internally and externally are only arriving internally. This is a huge problem because I don't know how many have been affected. There may be many lost emails we don't know about.
Second, it looks like I can't trust the delivery report. It says pending for some emails which didn't arrive, but it also says pending for some which did arrive. That is no good at all.
For info the server is running Windows Server 2012. I have run a Microsoft Update to check if there are any to apply and the only Exchange one is a spam filter update, which I doubt has any bearing but I will apply when I get chance.

Hi Neil,
According to the description, I find a related KB on Exchange 2010:
https://support.microsoft.com/kb/2694474?wa=wsignin1.0
It has the similar situation as yours.
This issue occurs because a function in a message tracking component tries to obtain the information for the recipient instead of the external recipient.
Please try to upgrade to the latest Exchange update to check whether this issue can be solved.
Also please check whether Throttling has been set.
Please run "Get-TransportService | fl" to check the MaxOutboundConnections parameter value.
More details to see:
Message throttling
http://technet.microsoft.com/en-us/library/bb232205(v=exchg.150).aspx
Thanks
If you have feedback for TechNet Subscriber Support, contact
[email protected]
Mavis Huang
TechNet Community Support

Can I split my itunes music library between and internal and external hard drive?

Is it possible to have music on the two different drives and still be able to make playlists from both drives to put on my ipod? Here's my situation: I'm using a Dell 32 bit computer running Vista Home Premium SP2 which I share with other users. I have a large itunes library (40g+ of music only) that's starting to hog the hard disk space from other users. If possible, I would like to split off part of my itunes library to an external hard drive while still having access to the entire library for my ipod. Ideally I would like to have all my downloaded songs on both the internal and external drives so I'll have backups in case a drive fails, while putting all the music I have hard copies of solely on the external drive. Any help on how this can be done would be appreciated.

If you manually manage your itues library, you can store parts of it on an external drive, or on an internal drive. Just keep in mind that in iTunes that you must set a default location for iTunes to manage it's files, and that will be the default location for iTunes to store anything it downloads. You would need to manuay manage moving things from there if tht is not where you want them stored.
Perhaps a "better" solution would be for you to invest a little mone into 2 external drives. One to hold your entire iTunes library, and the second to be your off-line backup of the first. This is the method I have gone with and I like how it works for me. My entire iTunes library is on an external (portable) 320GB drive. Then, when iTunes is not running, I will clone my external drive onto a second drive I happen to have, this way if I have any failure of my primary drive, I lose at most about a weeks worth of content. For me, I purchase little content during a week, but I do move a fairly large volume of podcasts. With the entire library being on the external drive, if I ever have to swap to using my backup drive iTunes wil just think that it hasn't run and downloaded anything for a week, and all the "lost" content will be re-downloaded automatically. This won't work for apps or purchased content, but for subscribed podcasts, it is great.

How to use DataSource and External transaction in 9ias?

I'm working on a project that the application server needs to connect to over 100 databases.
I'd like to use connection pooling and external transaction service defined in OC4J's Datasources.
I wonder if anyone has an example of using datasource and external transaction service for OC4J.
Right now, I export toplink project to a java source and do the initialization there manually but I don't know how to use Datasource to get connections and how to use the external transaction service in the java code for OC4J.
I really appreciate you help.
Wei

Here is a fill in the blank example on how you could set this up through code:
Project project = new MyProject();
// alternatively, use the XMLProjectReader
server = project.createServerSession();
server.getLogin().useExternalConnectionPooling();
server.getLogin().setConnector(new JNDIConnector(new javax.naming.InitialContext(), "jdbc/DataSourceName"));
// the next line depends on the type of driver you want to use.
server.getLogin().useOracleThinJDBCDriver();
server.getLogin().useOracle();
server.getLogin().setUserName("username");
server.getLogin().setPassword("password");
server.getLogin().useExternalTransactionController();
server.setExternalTransactionController(new Oracle9iJTSExternalTransactionController());
server.logMessages();
server.login();

SharePoint 2013 - Office Web Apps - Internal and External Use

I have successfully installed SharePoint 2013 and Office Web Apps on Azure VMs inside an Azure Virtual Network (IaaS model). Everyting is working well. However, my testing has shown that external users and internal users can't use Office Web Apps at the
same time.
Office Web Apps, installed on its own vm, accomodates an external and internal URL quite well. However, SharePoint 2013 appears to only allow one setting for WOPI Zone, either internal or external but not both. I've set the WOPI zone to Internal-HTTPS (Set-SPWOPIZone
–Zone “internal-https”). OWA works just fine if accessed from inside the Azure Virtual Network. However, if I try to access from outside the Virtual Network, from the Internet, Office Web Apps fails. The exact oppisite is also true. I can set WOPI Zone to
External-HTTPS and accessing from the Internet works fine, but accessing inside the Virtual Network fails.
Am I missing something? I, obviously, want Office Webs Apps to function properly for both internal and external users simultaneously.
I appreciate any help anyone can provide here.
Glenn

Hi Glenn,
To have both the use of Internet and Internal available to your end-users, you first need to configure AAM setting. Open Central Administration > Application Management > Configure alternate access mappings. Let's say there is an existing web application
named http://sharepoint and my end-users from local network are able to access it using the URL http://sharepoint (root site collection). Here you need to add the Internet URL by select the web application and click Edit Public URLs. Add the Internet domain
to the web application, e.g http://sharepoint.abc.com. You don't necessarily have to edit binding setting in IIS. Before continuing next steps, make sure you are able to access http://sharepoint.abc.com from the Internet while being able to access http://sharepoint
from local network (aka Internal).
On the machine where Office Web App (OWA) Server 2013 is installed, open PowerShell to add OWA module and use the following command to re-create a new OWA server farm if you've completed configuring it previously.
New-OfficeWebAppsFarm -InternalUrl "http://owa" -ExternalUrl "http://owa.abc.com" -EditingEnabled.
In this case, I'm not using SSL certificate to encrypt data over the Internet. You can use Internet-public IP of the OWA server like -ExternalUrl "http://198.xxx.xxx.xx". Add CertifcateName parameter if you want to use whether CA-issued certificate
or self-signed certificate.
On your SharePoint machine, you need to re-bind all WFE machines to WAC farm using the cmdlet New-SPWOPIBinding. Next, you need to set the WOPI zone for both internal and external.
Set-SPWOPIZone -zone "external-http"
Note: I'm not all using certificate in my guidance. But the steps to have it configured is just to add more parameter.
I've recently successfully deployed OWA multi-server farm for both internal and internet uses for two big clients. In real-world scenario, ideally OWA should be published through firewall (Forefront UAG, TMG, F5...etc). Please let me know if you still have
issues after following my steps. My email: [email protected]
Regards,
-T.s
Thuan Soldier
A 23-year-old man loving Microsoft technologies and making crazy ideas on business journey.
SharePoint Vietnam |
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Applet and external applcations

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