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Articles indexed Monday April 26 2010

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  • Restore previously serialized JFrame-object, how?

    - by elementz
    Hi all. I have managed to serialize my very basic GUI-object containing a JTextArea and a few buttons to a file 'test.ser'. Now, I would like to completely restore the previously saved state from 'test.ser', but seem to have a misconception of how to properly deserialize an objects state. The class MyFrame creates the JFrame and serializes it. public class MyFrame extends JFrame implements ActionListener { // Fields JTextArea textArea; String title; static MyFrame gui = new MyFrame(); private static final long serialVersionUID = 1125762532137824262L; /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub gui.run(); } // parameterless default contructor public MyFrame() { } // constructor with title public MyFrame(String title) { } // creates Frame and its Layout public void run() { JFrame frame = new JFrame(title); JPanel panel_01 = new JPanel(); JPanel panel_02 = new JPanel(); JTextArea textArea = new JTextArea(20, 22); textArea.setLineWrap(true); JScrollPane scrollPane = new JScrollPane(textArea); scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED); panel_01.add(scrollPane); // Buttons JButton saveButton = new JButton("Save"); saveButton.addActionListener(this); JButton loadButton = new JButton("Load"); loadButton.addActionListener(this); panel_02.add(loadButton); panel_02.add(saveButton); // Layout frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.getContentPane().add(BorderLayout.CENTER, panel_01); frame.getContentPane().add(BorderLayout.SOUTH, panel_02); frame.setSize(300, 400); frame.setVisible(true); } /* * */ public void serialize() { try { ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("test.ser")); oos.writeObject(gui); oos.close(); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } public void actionPerformed(ActionEvent ev) { System.out.println("Action received!"); gui.serialize(); } } Here I try to do the deserialization: public class Deserialize { static Deserialize ds; static MyFrame frame; public static void main(String[] args) { try { ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.ser")); frame = (MyFrame) ois.readObject(); ois.close(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } } Maybe somebody could point me into the direction where my misconception is? Thx in advance!

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  • flex and jsf access the same instance of bean

    - by David
    i integrate a flex app in a jsf-icefaces app (in a jspx site with the ice:outputmedia-tag) and want to access the same instance of a bean from flex by remote, that jsf inject. i already connect with blazeds to a java-bean. this bean - like all other beans - get other beans by injection of jsf, but when i access the bean by remote from flex it doesnt hold the injected beans (like localizer and accesmanager, both session scoped) and i can't connect to the jsf session (FacesContext.getCurrentInstance() is null). this is because flex create a new instance of the bean and it’s not the same current instance, that jsf inject, i think. i can connect from flex to the database by create a new entity manager in the java bean, but that's not what i want, because it's again another entity manager...i want persist and get data over the accessmanager-bean. i know exadel fiji and flamingo, but i couldn't work with fiji, because my jsf app include the icefaces components and then it doesn't work with richfaces which fiji needs. and flamingo work only with jboss seam and spring. is it right? i also read about the spring-flex-integration, but the jsf application did not create with spring and i don't want to integrate spring in such a large jsf app. yesterday i read about the FlexFactory interface. this interface i have to implement in my own Factory and set it in the service-config.xml of blazeds as a factory read this. i still implement my own factory but i only get application scoped beans over the servlet context which i get over FlexContext.getServletContext().getAttribute("Bean"); and not session scoped beans... i hope there is a chance to connect throw flex and jsf... thanks!

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  • Does GetVolumeNameForVolumeMountPoint() return the GUID of a volume?

    - by sxingfeng
    Does GetVolumeNameForVolumeMountPoint() return the GUID of a volume in c++? GetVolumeNameForVolumeMmountPoint() { LPCTSTR lpszvolumeMountPoint, LPTSTR lpszVolumeName, DWORDcchBufferLength, } I mean if I am using a removeable disk. will the lpszVolumeName remained the same on the same computer? Does it return a certain ID for a certain volume everytime I insert the disk on my computer' USBport. And Make sure different disk's volumes will get different result? Many Thanks!

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  • Ttrigger extra paramter

    - by fire
    According to the jQuery manual you can send extra parameters (as an array) when calling a trigger. I am using this at the moment: $('#page0').trigger('click', [true]); How would I pick up whether the paramter has come through or not when using this? $('ul.pages li a').click(function() { // Do stuff if true has been passed as an extra parameter });

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  • c# ListView focus on second column

    - by James
    I have a ListView with several columns, let's say column A,B,C,D in that order, sorted by column A. In long lists I could press a letter on my keyboard and scroll down to the first item in column A that begins with the letter pressed. A new column has been inserted at the beginning, yet I still want to be able to press a letter on my keyboard and scroll according to the values in column A which is now the second column. How can I set the focus back to column A without making it the first column?

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  • directoryperdb issue

    - by Rich Blumer
    I installed MongoDB to run as a Windows Service on Win 7 and everything runs well. However, when I attempt to use the command --directoryperdb, it does not recognize this command. Does anyone know how to resolve this issue?

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  • Code golf: combining multiple sorted lists into a single sorted list

    - by Alabaster Codify
    Implement an algorithm to merge an arbitrary number of sorted lists into one sorted list. The aim is to create the smallest working programme, in whatever language you like. For example: input: ((1, 4, 7), (2, 5, 8), (3, 6, 9)) output: (1, 2, 3, 4, 5, 6, 7, 8, 9) input: ((1, 10), (), (2, 5, 6, 7)) output: (1, 2, 5, 6, 7, 10) Note: solutions which concatenate the input lists then use a language-provided sort function are not in-keeping with the spirit of golf, and will not be accepted: sorted(sum(lists,[])) # cheating: out of bounds! Apart from anything else, your algorithm should be (but doesn't have to be) a lot faster! Clearly state the language, any foibles and the character count. Only include meaningful characters in the count, but feel free to add whitespace to the code for artistic / readability purposes. To keep things tidy, suggest improvement in comments or by editing answers where appropriate, rather than creating a new answer for each "revision". EDIT: if I was submitting this question again, I would expand on the "no language provided sort" rule to be "don't concatenate all the lists then sort the result". Existing entries which do concatenate-then-sort are actually very interesting and compact, so I won't retro-actively introduce a rule they break, but feel free to work to the more restrictive spec in new submissions. Inspired by http://stackoverflow.com/questions/464342/combining-two-sorted-lists-in-python

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  • Two windows fullscreen on two different screen.

    - by sirithang
    Hi! I'm actually working on an app to display an image onto a Dome. The dome projection system is constitued of two projector and a pc running a GentoO Linux and KDE, with nvidia TwinView system. Since here i've used SDL to display a fullscreen windows, and it display my app onto the two screen. But i just figured that i need to project two different images, one on each projector. That's why i search for a solution to display a fullscreen window on the first screen (projector) and another on the second. But SDL fullscreen just extend the window to the two screens. I can use any librairie (since it light and free, as i will wrap it into my small "API"), or change display setting. BTW it would be nice to have openGL support, since SDL manage only one window ^^"

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  • ldap_bind_s returning LDAP_SUCCESS with wrong credentials

    - by rezna
    Hi guys, I have this little problem. I want to authenticate user against LDAP (Windows Active Directory), everything works OK, but the combination (good user, good password, wrong domain). LDAP* ldap = ldap_init(L"myserver", 389); ULONG ldap_version = 3; ULONG ret = LDAP_SUCCESS; ret = ldap_set_option(ldap, LDAP_OPT_PROTOCOL_VERSION, (void*)&ldap_version); ret = ldap_connect(ldap, NULL); SEC_WINNT_AUTH_IDENTITY ai; ai.Domain = (unsigned short*)BAD_DOMAIN; ai.DomainLength = wcslen(BAD_DOMAIN); ai.User = (unsigned short*)OK_USER; ai.UserLength = wcslen(OK_USER); ai.Password = (unsigned short*)OK_PASS; ai.PasswordLength = wcslen(OK_PASS); ai.Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE; ret = ldap_bind_s(ldap, NULL, (PWCHAR) &ai, LDAP_AUTH_NTLM); // !!! HERE !!! ret = ldap_unbind_s(ldap); On the line marke '!!! HERE !!!' I'd expect 0x31 or any other error returned. Instead I get LDAP_SUCCESS :( Any suggestions? Thx, Milan

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  • MkMapView Zoom Level

    - by meetS
    I m using MkMapView with google maps.I succeed to show map view and address with annotation pin.But I want increased zoom level.How Can I Set it programmatically?? (void) showMyAddress { //Hide the keypad MKCoordinateRegion region; MKCoordinateSpan span; span.latitudeDelta=0.2; span.longitudeDelta=0.2; CLLocationCoordinate2D location = [self addressLocation]; region.span=span; region.center=location; if(addAnnotation != nil) { [mapView removeAnnotation:addAnnotation]; [addAnnotation release]; addAnnotation = nil; } addAnnotation = [[AddAnnotation alloc] initWithCoordinate:location ]; [addAnnotation setMTitle:@"abc"]; [addAnnotation setMSubTitle:@"def."] [mapView addAnnotation:addAnnotation]; [mapView setRegion:region animated:TRUE]; [mapView regionThatFits:region]; } -(CLLocationCoordinate2D) addressLocation { NSString *urlString = [NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%@&output=csv", [@"abc" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; NSString *locationString = [NSString stringWithContentsOfURL:[NSURL URLWithString:urlString] encoding:NSStringEncodingConversionAllowLossy error:nil]; NSArray *listItems = [locationString componentsSeparatedByString:@","]; double latitude = 0.0; double longitude = 0.0; if([listItems count] >= 4 && [[listItems objectAtIndex:0] isEqualToString:@"200"]) { latitude = [[listItems objectAtIndex:2] doubleValue]; longitude = [[listItems objectAtIndex:3] doubleValue]; } else { } CLLocationCoordinate2D location; location.latitude = latitude; location.longitude = longitude; return location; }

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  • How to listen to JComboBox's width changes?

    - by agnieszka
    I tried PropertyChangeListener with property set to "width", "Width", "size" and "Size". PropertyChangeListener widthChangeListener = new PropertyChangeListener() { @Override public void propertyChange(PropertyChangeEvent evt) { //code } }; streamsComboBox.addPropertyChangeListener("width", widthChangeListener); projectsComboBox.addPropertyChangeListener("width", widthChangeListener); vobsComboBox.addPropertyChangeListener("width", widthChangeListener); Nothing works - the handler method is never fired. What should I do to handle JComboBox's size change? Where does the property name come from anyway?

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  • How does Symfony pass members set in an action to a template?

    - by Martin Chatterton
    How does a member set inside an action... $this->foo = 'bar'; ...become a variable accessible from a template... echo $foo; // bar I would like to know how it is achieved at a framework level. There is a lot of documentation on how to use Symfony, but I've not managed to find much about how it all fits together behind the scenes (class structure/inheritance etc). Thanks in advance for your help!

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  • Putting logic in ViewModel get'ers

    - by Yngvebn
    What do you think about putting Get-logic in the getters of a ViewModel? Something like: public class DummyViewModel { public int Id { get; set; } private DummyObject myObject; public DummyObject MyObject { get { if (MyObject == null) { DummyRepository repo = new DummyRepository(); myObject = repo.Get(Id); } return myObject; } } } Is this bad practice, or totally fine? I find my controllers getting really bloated by doing all the get-logic there, but I'm really torn as to where I should put it... My reason for doing it this way, is that I can pass the ViewModel to different types of view, and only the neccessary DB-lookup will be performed based on what property is requested.

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  • passing xml to a webservice

    - by Neale
    I have a simple web service that will have one method: DoTransactions(xlm) Now the reason that i am using XML as a parameter is due to the fact that the parameters will often change. So for example it could be: <payload> <userId>1234</userid> <partnerId>ptn654</partnerId> </payload> OR <payload> <partnerId>ptn654</partnerId> <items> <item1> <cost>10</cost> <description>This is item 1</description> </item1> </items> </payload> As you can see the XML string will always change (this is due to a client request) Would it be better to rather pass in a string and parse the XML in the method or should is there a better way to do it. This web service will be used for varios different code languages.

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  • Network with bridge and port forwarding?

    - by rafek
    Hi! Below is my current (and planned) home network configuration. I would like to connect my non-wifi-capable desktop to my home network. The question is: HOW? What device do I need? The primary requiremen is that I need to be able to forward ports to my desktop. How would I achieve this? Is there something like "double port forwarding"? Could anyone please explain this configuration to me? Thank you in advance!

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  • Lancement du forum d'entraide dédié à Scala, l'un des langages alternatifs pour la plateforme Java

    Ce nouveau forum d'entraide est destiné aux questions sur Scala. Avant de poser votre question, prenez le temps de consulter les ressources à votre disposition :Documentation officielle La catégorie Scala du blog de djo.mos Pour vos questions sur Lift, merci de privilégier le forum Autres Frameworks Web Java. Pour toute autre question sur des frameworks s'appuyant sur Scala, si vous ne trouvez pas de forum adapté à la problématique traitée, merci de privilégier le présent forum en p...

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  • Convert sql query

    - by nisha
    I have used this query in sql,pls convert this query to use for access database. Table structure is UserID,Username,LogDate,LogTime WITH [TableWithRowId] as (SELECT ROW_NUMBER() OVER(ORDER BY UserId,LogDate,LogTime) RowId, * FROM @YourTable), [OddRows] as (SELECT * FROM [TableWithRowId] WHERE rowid % 2 = 1), [EvenRows] as (SELECT *, RowId-1 As OddRowId FROM [TableWithRowId] WHERE rowid % 2 = 0) SELECT [OddRows].UserId, [OddRows].UserName, [OddRows].LogDate, [OddRows].LogTime, [EvenRows].LogDate, [EvenRows].LogTime FROM [OddRows] LEFT JOIN [EvenRows] ON [OddRows].RowId = [EvenRows].OddRowId

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  • Virtual Cam - Cam Split .NET

    - by Fish
    I'm looking for a virtual webcam driver to use in a .NET project, this project will be GPL, and have no idea how many installations there will be The idea is that the application is using the webcam without locking the device. Found a couple of programs that do the job, but either in application and/or too expensive: * http://www.softservice.org/products_camsplitter.html (9.99$/installation) * splitcamera.com (program, no SDK available) All idea's are welcome

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  • Format fixed-format text file lines

    - by EugeneP
    there's a text file first second third 1 2 3 yes no ok hmmmmmmm yep_a_long_word_it_is ahahahahahahha what java functions /libs to use to align words so that they are looked like this (fixed width based on the longest column's length), let's say center align: first second third 1 2 3 yes no ok hmmmmmmm yep_a_long_word_it_is ahahahahahahha

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  • Packing jQuery plugin - jFeed

    - by David Neale
    I have a modified version of the jFeed plugin and now want to pack the four source files. There is a Makefile and some perl scripts in the download but I don't know how to use them. This is the file structure: \Makefile \proxy.php \src\jatom.js \src\jfeed.js \src\jfeeditem.js \src\jrss.js \build\packer\jsPacker.pl \build\packer\Pack.pm \build\packer\ParseMaster.pm

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  • Loading a gallery of external images with JQuery

    - by pingu
    Hi guys, I'm creating a gallery of images pulled in via a twitter image hosting service, and I want to show a loading graphic before they are displayed, but the logic seems to be failing me. I'm trying to do it the following way: <ul> <li> <div class="holder loading"> </div> </li> <li> <div class="holder loading"> </div> </li> <li>...</li> <li>...</li> </ul> Where there "loading" class has an animated spinner set as it's background image. JQuery: $('.holder').each(function(){ var imgsrc = http://example.com/imgsrc; var img = new Image(); $(img).load(function () { $(this).hide(); $(this).parent('.holder').removeClass('loading'); $(this).parent().append(this); $(this).fadeIn(); }) .error(function () { }).attr('src', imgsrc); }); Which isn't working - I'm not sure that the logic is correct and how to access the "holder" from inside the img.load nested function. What would be the best way to build this gallery so that the images display only after they've been loaded?

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