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  • Game works on netbeans but not outside netbeans in jar file?

    - by Michael Haywood
    I am creating a basic game of 'Pong'. I have finished the game apart from a few glitches I need to remove. The game runs perfectly in netbeans but if I create a jar file errors come up causing it to not work. I am quite new to java but I believe it is something to do with my code looking for the images but the images have not been loaded up yet. Here is the error. How can I get this to work outside of netbeans in a jar file? C:\Users\michael>java -jar "C:\Users\michael\Documents\NetBeansProjects\Pong\dis t\Pong.jar" Exception in thread "main" java.lang.NullPointerException at javax.swing.ImageIcon.<init>(Unknown Source) at pong.BallMainMenu.<init>(BallMainMenu.java:19) at pong.Board.gameInit(Board.java:93) at pong.Board.addNotify(Board.java:86) at java.awt.Container.addNotify(Unknown Source) at javax.swing.JComponent.addNotify(Unknown Source) at java.awt.Container.addNotify(Unknown Source) at javax.swing.JComponent.addNotify(Unknown Source) at java.awt.Container.addNotify(Unknown Source) at javax.swing.JComponent.addNotify(Unknown Source) at javax.swing.JRootPane.addNotify(Unknown Source) at java.awt.Container.addNotify(Unknown Source) at java.awt.Window.addNotify(Unknown Source) at java.awt.Frame.addNotify(Unknown Source) at java.awt.Window.show(Unknown Source) at java.awt.Component.show(Unknown Source) at java.awt.Component.setVisible(Unknown Source) at java.awt.Window.setVisible(Unknown Source) at pong.Pong.<init>(Pong.java:16) at pong.Pong.main(Pong.java:23)

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  • How to open files which are located in VirtualBox's Guest Machine from Netbeans of Host Machine

    - by Bakhtiyor
    I have Ubuntu 10.04 installed in my Host Machine and it has VirtualBox. I have Guest Machine wich runs Ubuntu 10.10. I have NetBeans installed in Host Machine and need to open my project files which are located in Guest Machine. The reason I need it is because in my working place I have not access to install any applications, that is why I have Guest Machine where I have Web Server installed on it and also I have one web application that I am developing. I need to open that web application files from Guest Machine's Netbeans in order to modify/create new files for my web application. I have configured SSH server of Guest Machine and added port redirection in the VirtualBox so that now I can connect to it from Host Machine. But I could not find any way to open those files from Netbeans. Could anybody give me advice about how can I do that please? UPDATE I forgot to say that I don't want to use SharedFolders.

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  • USB driver problems (Windows 8.1)

    - by HelloWorld
    Every time I turn on my laptop the USB ports don't work and the drivers have an error. In order to fix this I'm forced to start the Device Manager, uninstall all the USB drivers, open the Control Panel, click Find and fix problems (under System and Security), click Configure a device (under Hardware and Sound) and then when that window pops up just hit Next until I can see my USB drivers reinstalled and working in the Device Manager window under Universal Serial Bus controllers. I found this way to fix it but I would like a permanent solution so that I don't have to do this every time I turn on the machine. Any ideas? When I bought the machine it had Window 7 installed but I later upgraded it to Windows 8.0 and then 8.1 after that.

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  • Mapping a Piped Shell Command in Vim

    - by michaelmichael
    In a previous question I asked about mapping evaluated code to a new window in MacVim. I got a great solution, but it presented another question: How can I map a key command in my .vimrc that involves piping output in the shell? As a simple example, let's say I wanted to pipe the results of ls -a to a new MacVim window. From the Vim command line I can enter !ls -a | mvim -, and the results will appear in a new window. Great! Now, I add that to my .vimrc: nmap <Leader>r :w !ls | mvim<CR> Vim now throws an error every time I try to source my .vimrc, which reads as follows: E492: Not an editor command: mvim<CR> Any ideas on how to overcome this?

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  • How can one manage thousands of IF...THEN...ELSE rules?

    - by David
    I am considering building an application, which, at its core, would consist of thousands of if...then...else statements. The purpose of the application is to be able to predict how cows move around in any landscape. They are affected by things like the sun, wind, food source, sudden events etc. How can such an application be managed? I imagine that after a few hundred IF-statements, it would be as good as unpredictable how the program would react and debugging what lead to a certain reaction would mean that one would have to traverse the whole IF-statement tree every time. I have read a bit about rules engines, but I do not see how they would get around this complexity.

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  • How to automatically save sessions with multiple windows in FireFox

    - by Matthew Talbert
    I've used primarily FF's built-in session management until recently. Now my needs have become more sophisticated. What I want is to be able to have two windows, one with a fixed set of tabs (approximately 5) and the other with "automatic save". That is, when I start FF, I want 1 window to open with my 5 tabs, and another to open with whatever I had when I shut down FF. I've installed "Session Manager", but I can't seem to get it to do what I want. It will save one window, but when I close one window, it removes that one from the session. Any suggestions to do this with either Session Manager or another plugin would be great.

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  • Welcome to the ISV Migration Center (IMC) Team blog

    - by lukasz.romaszewski(at)oracle.com
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Welcome to the ISV Migration Center (IMC) Team blog.The IMC is a a team of senior Oracle technical consultants who's aim is to enable partners to rapidly and successfully adopt and implement Oracle's latest technology.  The IMC consultants are trained and equipped to deliver leading-edge, enterprise-quality technology solutions. This blog has been created to serve as an  information exchange platform on Oracle Fusion Middleware and Database products so you will find how-tos, articles, demos and other technical resources.  We will also publish our upcoming workshops, webcasts and seminars so make sure you check it regularly to get the latest updates.   Here's our team:Lukasz Romaszewski Java & middleware specialist, 8 years experience in architecting, developing and supporting enterprise solutions based on J2EE and Oracle Database technology. At Oracle from April 2008, working as an IMC Migration Consultant in Oracle Partner Hub in Cracow, Poland. Helping Oracle Partners in migrating their solutions to the latest Oracle Fusion Middleware stack, running hands-on migration workshops and seminars across Europe. Experienced in the following areas and products Oracle Weblogic Application Server 11gApplication Development Framework (ADF)Oracle SOA Suite 11gOracle Forms 6i, 10g and 11gOracle Database (PL/SQL, AQ, XML DB)Java EE 5.0 based architecture Murat Teksoz Oracle DB and DB options - Oracle Linux- Apex- Oracle Business intelligence specilist, 13 years experince in Database managment, Performans Tuning, Diagnosting ,Installation and Configurationg database, Database Security, High Avalibility and Disaster Recovery solutions. Working at Oracle IMC Istanbul from September 2008, delivering partner workshops and seminars in Europe and Central Asia. Experienced in the following areas and products Oracle 9i,10g,11g Database SolutionsOracle Partitioning, Total Recall Advantage compressingOracle High Avalability Solutions - Real Application ClusterOracle Disaster Recovery Solutions - Oracle DataguardOracle Grid ControlOracle LinuxOracle Business intelligence solutions - Oracle Bi 10g-11gMigration Tools (Sqldeveloper) - Migrate from SqlServer,Mysql,Sysbase,Db2 to Oracle DatabaseOracle APEX (Application Express Tool) Vadim Melnikov Oracle Database specialist with DB Options, Linux and virtualization skills. Vadim has more than 8 years experience with Oracle products and is now working as Database consultant in Oracle IMC Moscow as employee of FORS Development center, Russian Oracle Platinum partner. Helping Oracle Partners to migrate solutions to Oracle from other platforms and adopt new oracle technologies, running workshops and seminars. Experienced in the following areas and products Oracle Database 9i,10g,11g Database Solutions (SQL, PL/SQL, Installing, Configuring, Performance Tuning, Diagnosting, Database management)Oracle DB options (Partitioning, Total Recall, Advanced compression)Oracle Enterprise ManagerOracle Enterprise LinuxOracle VM 2 for x86Migration to Oracle DatabaseOracle Application Express Gokhan Gungor Java (J2EE) Lead Developer and Architect. Designed and Developed Web Applications, Middleware Systems/Services, Desktop Applications and Back-end Tools/Services using Java, WebLogic Server, JBoss and Open Source Frameworks. Joined Oracle in 2010 as Fussion middleware consultant in Istanbul IMC , responsible for running migration and adoption workshops and seminars covering Java technology, ADF, WebLogic and SOA and providing technical consultancy for migration projects. Experienced in the following areas and products Oracle WebLogic ServerApplication Development Framework (ADF)JDeveloperJava EE (EJB, JMS, Servlet, JSP, JSF, JavaMail, JTA, JAAS, JSTL, JAXB)Java SE (JavaBeans, JDBC, XML, XSL, RMI, JNDI, JAXP)Oracle Database 10g,11g Dmitry Nefedkin Oracle Middleware & Java specialist, 7+ years experience in developing, designing enterprise solutions based on Oracle Database and Middleware, developing Oracle e-Business Suite customizations, designing integration architecture within the companies . Joined Oracle team in October 2010 as IMC FMW Consultant in Oracle Alliances & Channels in Moscow, Russia. Experienced in the following areas and products Oracle Weblogic Application Server 11gOracle Service Bus 11gOracle SOA Suite 10g (BPEL PM, ESB, OWSM)Oracle Application Server 10gOracle Forms 6i and 9iOracle BI PublisherOracle ADF 10gOracle Database (SQL tuning, PL/SQL, AQ, Streams)Java EE 5 developmentCheck out our web site as well: Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} http://www.oracle.com/partners/en/most-popular-resources/027930

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  • Trouble installing Ubuntu 12.04 from USB

    - by Kyle J
    I want to dual-boot Ubuntu Desktop 12.04 on my new ultrabook which has an Intel i7 3517U processor 6GB RAM Windows 7, 64-bit no CD/DVD drive I created my bootable USB stick using pendrivelinux.com with the "ubuntu-12.04.1-desktop-i386.iso". I am following these directions because they include nice screenshots; however, I do not get very far in the process. I am able to boot into the Live Desktop, and then I try to install onto my hard disk. Here are the series of actions that I take next: First, I see this ( http://i.imgur.com/vucYH ) window, and click 'continue' Then I get this ( http://imgur.com/2wESc ) window, and click 'continue' again This appears: and I get worried because it seems like there is no recognition that I have Windows installed. According to the directions I am following, I should see /dev/sda1 and /dev/sda2 partitions. In the drop-down menu at the bottom the only "Device for boot loader installation" is /dev/sdb and no information is shown. I am hesitant to click 'Install Now' for fear of what it might do to Windows. 4. I click 'Quit' and cancel the installation, but then about 5 seconds later this ( http://imgur.com/a/yXi0C ) window pops up (I have expanded it to full screen to scroll and show all the details). 5. Another second later this ( http://imgur.com/vxcrN ) comes up. I'm not sure how relevant this is. Does anyone have any insight into this issue?? Why does it not show my current Windows partition? What would happen if I tried to continue with the installation process? Thanks! PS - sorry, it would only let me post 2 hyperlinks as a new user

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  • Licensing approach for .NET library that might be used desktop / web-service / cloud environment

    - by Bobrovsky
    I am looking for advice how to architect licensing for a .NET library. I am not asking for tool/service recommendations or something like that. My library can be used in a regular desktop application, in an ASP.NET solution. And now Azure services come into play. Currently, for desktop applications the library checks if the application and company names from the version history are the same as the names the key was generated for. In other cases the library compares hardware IDs. Now there are problems: an Azure-enabled web-application can be run on different hardware each time (AFAIK) sometimes the hardware ID for the same hardware changes unexpectedly checking the hardware ID or version info might not be allowed in some circumstances (shared hosting for example) So, I am thinking about what approach I can take to architect a licensing scheme that: is friendly to customers (I do not try to fight piracy, but I do want to warn the customer if he uses the library on more servers than he paid for) can be used when there is no internet connection can be used on shared hosting What would you recommend?

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  • links for 2010-06-14

    - by Bob Rhubart
    White Paper: Application Portfolio Rationalization: How IT Standardization Fuels Growth Co-authors Hamidou Dia and Roy Hunter describe an Enterprise Architecture approach to application portfolio rationalization. (tags: oracle otn entarch) @soatoday: Cloud & Compliance: Write a Solid Prenup "Think of your cloud contract as a prenuptial agreement," says Oracle ACE Director Jordan Braunstein. "There must be clear recourse and commitments." (tags: soa cloud oracleace entarch) @fteter: Resilience and Relationships "Take a look at your own enterprise architecture with these ideas in mind," suggests Oracle ACE Director Floyd Teter, "and see if your outlook doesn't change." (tags: entarch complexity oracleace) @lucasjellema: Calling an EJB from a SOA Composite Application using the EJB Binding based on Java Interface Oracle ACE Director Lucas Jellema illustrates the use of one of several new capabilities in Oracle SOA Suite 11g R1 Patch Set 2 (11.1.1.3.0). (tags: soa oracleace middleware soasuite oracle)

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  • Easily Close All Tabs in Google Chrome

    - by Asian Angel
    Do you find yourself with a lot of tabs open but dread closing all but one manually? Now you can close all of your tabs with a single click, and have just one ready to go with the Close all Tabs extension. Before We all find ourselves with a lot of tabs open sooner or later. That is not so bad until we realize that we need to close all of them and get back to work. A person could open a new tab and manually close the rest or close the entire window and restart Chrome. But a single click solution would be a lot more convenient. After There it is…the single click solution. Just click the Toolbar Button and BOOM! One fresh window with a single new tab page showing. Now if you could only take the rest of the day off… Conclusion The Close all Tabs extension may not be something that everyone would use, but if you are tired of manually closing all of those tabs then you will definitely like it. Links Download the Close all Tabs extension (Google Chrome Extensions) Similar Articles Productive Geek Tips Focused New Tabs Quick-Fix for Google ChromeVisually Browse Through Your Open Tabs in Google ChromeMake Google Chrome Open with Pinned TabsStupid Geek Tricks: Compare Your Browser’s Memory Usage with Google ChromeEasily Control a Large Amount of Tabs in Google Chrome TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Acronis Online Backup DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows Fun with 47 charts and graphs Tomorrow is Mother’s Day Check the Average Speed of YouTube Videos You’ve Watched OutlookStatView Scans and Displays General Usage Statistics How to Add Exceptions to the Windows Firewall Office 2010 reviewed in depth by Ed Bott

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  • Changes to the LINQ-to-StreamInsight Dialect

    - by Roman Schindlauer
    In previous versions of StreamInsight (1.0 through 2.0), CepStream<> represents temporal streams of many varieties: Streams with ‘open’ inputs (e.g., those defined and composed over CepStream<T>.Create(string streamName) Streams with ‘partially bound’ inputs (e.g., those defined and composed over CepStream<T>.Create(Type adapterFactory, …)) Streams with fully bound inputs (e.g., those defined and composed over To*Stream – sequences or DQC) The stream may be embedded (where Server.Create is used) The stream may be remote (where Server.Connect is used) When adding support for new programming primitives in StreamInsight 2.1, we faced a choice: Add a fourth variety (use CepStream<> to represent streams that are bound the new programming model constructs), or introduce a separate type that represents temporal streams in the new user model. We opted for the latter. Introducing a new type has the effect of reducing the number of (confusing) runtime failures due to inappropriate uses of CepStream<> instances in the incorrect context. The new types are: IStreamable<>, which logically represents a temporal stream. IQStreamable<> : IStreamable<>, which represents a queryable temporal stream. Its relationship to IStreamable<> is analogous to the relationship of IQueryable<> to IEnumerable<>. The developer can compose temporal queries over remote stream sources using this type. The syntax of temporal queries composed over IQStreamable<> is mostly consistent with the syntax of our existing CepStream<>-based LINQ provider. However, we have taken the opportunity to refine certain aspects of the language surface. Differences are outlined below. Because 2.1 introduces new types to represent temporal queries, the changes outlined in this post do no impact existing StreamInsight applications using the existing types! SelectMany StreamInsight does not support the SelectMany operator in its usual form (which is analogous to SQL’s “CROSS APPLY” operator): static IEnumerable<R> SelectMany<T, R>(this IEnumerable<T> source, Func<T, IEnumerable<R>> collectionSelector) It instead uses SelectMany as a convenient syntactic representation of an inner join. The parameter to the selector function is thus unavailable. Because the parameter isn’t supported, its type in StreamInsight 1.0 – 2.0 wasn’t carefully scrutinized. Unfortunately, the type chosen for the parameter is nonsensical to LINQ programmers: static CepStream<R> SelectMany<T, R>(this CepStream<T> source, Expression<Func<CepStream<T>, CepStream<R>>> streamSelector) Using Unit as the type for the parameter accurately reflects the StreamInsight’s capabilities: static IQStreamable<R> SelectMany<T, R>(this IQStreamable<T> source, Expression<Func<Unit, IQStreamable<R>>> streamSelector) For queries that succeed – that is, queries that do not reference the stream selector parameter – there is no difference between the code written for the two overloads: from x in xs from y in ys select f(x, y) Top-K The Take operator used in StreamInsight causes confusion for LINQ programmers because it is applied to the (unbounded) stream rather than the (bounded) window, suggesting that the query as a whole will return k rows: (from win in xs.SnapshotWindow() from x in win orderby x.A select x.B).Take(k) The use of SelectMany is also unfortunate in this context because it implies the availability of the window parameter within the remainder of the comprehension. The following compiles but fails at runtime: (from win in xs.SnapshotWindow() from x in win orderby x.A select win).Take(k) The Take operator in 2.1 is applied to the window rather than the stream: Before After (from win in xs.SnapshotWindow() from x in win orderby x.A select x.B).Take(k) from win in xs.SnapshotWindow() from b in     (from x in win     orderby x.A     select x.B).Take(k) select b Multicast We are introducing an explicit multicast operator in order to preserve expression identity, which is important given the semantics about moving code to and from StreamInsight. This also better matches existing LINQ dialects, such as Reactive. This pattern enables expressing multicasting in two ways: Implicit Explicit var ys = from x in xs          where x.A > 1          select x; var zs = from y1 in ys          from y2 in ys.ShiftEventTime(_ => TimeSpan.FromSeconds(1))          select y1 + y2; var ys = from x in xs          where x.A > 1          select x; var zs = ys.Multicast(ys1 =>     from y1 in ys1     from y2 in ys1.ShiftEventTime(_ => TimeSpan.FromSeconds(1))     select y1 + y2; Notice the product translates an expression using implicit multicast into an expression using the explicit multicast operator. The user does not see this translation. Default window policies Only default window policies are supported in the new surface. Other policies can be simulated by using AlterEventLifetime. Before After xs.SnapshotWindow(     WindowInputPolicy.ClipToWindow,     SnapshotWindowInputPolicy.Clip) xs.SnapshotWindow() xs.TumblingWindow(     TimeSpan.FromSeconds(1),     HoppingWindowOutputPolicy.PointAlignToWindowEnd) xs.TumblingWindow(     TimeSpan.FromSeconds(1)) xs.TumblingWindow(     TimeSpan.FromSeconds(1),     HoppingWindowOutputPolicy.ClipToWindowEnd) Not supported … LeftAntiJoin Representation of LASJ as a correlated sub-query in the LINQ surface is problematic as the StreamInsight engine does not support correlated sub-queries (see discussion of SelectMany). The current syntax requires the introduction of an otherwise unsupported ‘IsEmpty()’ operator. As a result, the pattern is not discoverable and implies capabilities not present in the server. The direct representation of LASJ is used instead: Before After from x in xs where     (from y in ys     where x.A > y.B     select y).IsEmpty() select x xs.LeftAntiJoin(ys, (x, y) => x.A > y.B) from x in xs where     (from y in ys     where x.A == y.B     select y).IsEmpty() select x xs.LeftAntiJoin(ys, x => x.A, y => y.B) ApplyWithUnion The ApplyWithUnion methods have been deprecated since their signatures are redundant given the standard SelectMany overloads: Before After xs.GroupBy(x => x.A).ApplyWithUnion(gs => from win in gs.SnapshotWindow() select win.Count()) xs.GroupBy(x => x.A).SelectMany(     gs =>     from win in gs.SnapshotWindow()     select win.Count()) xs.GroupBy(x => x.A).ApplyWithUnion(gs => from win in gs.SnapshotWindow() select win.Count(), r => new { r.Key, Count = r.Payload }) from x in xs group x by x.A into gs from win in gs.SnapshotWindow() select new { gs.Key, Count = win.Count() } Alternate UDO syntax The representation of UDOs in the StreamInsight LINQ dialect confuses cardinalities. Based on the semantics of user-defined operators in StreamInsight, one would expect to construct queries in the following form: from win in xs.SnapshotWindow() from y in MyUdo(win) select y Instead, the UDO proxy method is referenced within a projection, and the (many) results returned by the user code are automatically flattened into a stream: from win in xs.SnapshotWindow() select MyUdo(win) The “many-or-one” confusion is exemplified by the following example that compiles but fails at runtime: from win in xs.SnapshotWindow() select MyUdo(win) + win.Count() The above query must fail because the UDO is in fact returning many values per window while the count aggregate is returning one. Original syntax New alternate syntax from win in xs.SnapshotWindow() select win.UdoProxy(1) from win in xs.SnapshotWindow() from y in win.UserDefinedOperator(() => new Udo(1)) select y -or- from win in xs.SnapshotWindow() from y in win.UdoMacro(1) select y Notice that this formulation also sidesteps the dynamic type pitfalls of the existing “proxy method” approach to UDOs, in which the type of the UDO implementation (TInput, TOuput) and the type of its constructor arguments (TConfig) need to align in a precise and non-obvious way with the argument and return types for the corresponding proxy method. UDSO syntax UDSO currently leverages the DataContractSerializer to clone initial state for logical instances of the user operator. Initial state will instead be described by an expression in the new LINQ surface. Before After xs.Scan(new Udso()) xs.Scan(() => new Udso()) Name changes ShiftEventTime => AlterEventStartTime: The alter event lifetime overload taking a new start time value has been renamed. CountByStartTimeWindow => CountWindow

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  • Is it worth it to switch from home-grown remote command interface to using JMX

    - by Sam Goldberg
    Without knowing too much about JMX, I've always assumed that it would be the best approach for building in remote management to our standalone Java server application. Our server application has some minimal remote control capability, using text commands sent via TCP/IP socket to it. Using the home grown approach, it is fairly to add a new command. (Just create new command text, and the code to handle that in the message receiver). On the other hand, we have hardly implemented any commands, even though there are many things we would like to be able to execute remotely. I am trying to weigh the value of moving to incorporating JMX (learning it, and building the interfaces), versus just sticking with the home-grown approach. Does anyone have any experience or advice regarding changing an existing application to use JMX?

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  • Global menu not showing in Ubuntu 12.10 with Unity

    - by William
    I am on Ubuntu 12.10 with Unity shell. I am not quite sure what happened, but today I noticed that the menubar (containing 'File, Edit, etc...') is not appearing on the panel as it used to (i.e. the global application menu), but on the application window under the title bar. The only application that still uses global menu is Chromium. Any ideas what settings may have changed? Also, when I right click on the desktop and select "Change Desktop Background", System Settings opens, instead of the "Appearance" settings. Apparently, here is a related question, with no answer: Global menu and HUD suddenly broken EDIT: I noticed this behavior on three of my computers after an update (I do not remember exactly which packages were updated). Now when I try to run apt-get upgrade, I get: The following packages have been kept back: gnome-control-center gnome-control-center-data I guess something is going on with updates. Any info would be appreciated.

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  • Game Center Leaderboard not dismissing

    - by FireStorm
    I was implementing Game Center into my app and all was going well except for the leaderboard done button not dismissing the leaderboard even with gameCenterControllerDidFinish added in. I call up the leaderboard with the touch of a button in the .m file as so: - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches anyObject]; CGPoint location = [touch locationInNode:self]; SKNode *node = [self nodeAtPoint:location]; if ([node.name isEqualToString:@"rankButton"]) { [self runAction:[SKAction playSoundFileNamed:@"fishtran.m4a" waitForCompletion: NO]]; GKGameCenterViewController *gameCenterController = [[GKGameCenterViewController alloc] init]; if (gameCenterController != nil) { gameCenterController.viewState = GKGameCenterViewControllerStateAchievements; UIViewController *vc = self.view.window.rootViewController; [vc presentViewController: gameCenterController animated: YES completion:nil]; } } else if ([node.name isEqualToString:@"Leaderboard"]) { GKGameCenterViewController *gameCenterController = [[GKGameCenterViewController alloc] init]; if (gameCenterController != nil) { gameCenterController.viewState = GKGameCenterViewControllerStateLeaderboards; UIViewController *vc = self.view.window.rootViewController; [vc presentViewController: gameCenterController animated: YES completion:nil]; } } ... and then I added thegameCenterControllerDidFinish immediately after as so: - (void)gameCenterControllerDidFinish:(GKGameCenterViewController*)gameCenterController { UIViewController *vc = self.view.window.rootViewController; [vc dismissViewControllerAnimated:YES completion:nil]; } and the done button still doesn't work and i haven't been able to find any solutions. And yes, I do have GKGameCenterControllerDelegate in my .h file. Any help would be greatly appreciated, Thanks!

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  • Mutating Programming Language?

    - by MattiasK
    For fun I was thinking about how one could build a programming language that differs from OOP and came up with this concept. I don't have a strong foundation in computer science so it might be common place without me knowing it (more likely it's just a stupid idea :) I apologize in advance for this somewhat rambling question :) Anyways here goes: In normal OOP methods and classes are variant only upon parameters, meaning if two different classes/methods call the same method they get the same output. My, perhaps crazy idea, is that the calling method and class could be an "invisible" part of it's signature and the response could vary depending on who call's an method. Say that we have a Window object with a Break() method, now anyone (who has access) could call this method on Window with the same result. Now say that we have two different objects, Hammer and SledgeHammer. If Break need to produce different results based on these we'd pass them as parameters Break(IBluntObject bluntObject) With a mutating programming language (mpl) the operating objects on the method would be visible to the Break Method without begin explicitly defined and it could adopt itself based on them). So if SledgeHammer calls Window.Break() it would generate vastly different results than if Hammer did so. If OOP classes are black boxes then MPL are black boxes that knows who's (trying) to push it's buttons and can adapt accordingly. You could also have different permission sets on methods depending who's calling them rather than having absolute permissions like public and private. Does this have any advantage over OOP? Or perhaps I should say, would it add anything to it since you should be able to simply add this aspect to methods (just give access to a CallingMethod and CallingClass variable in context) I'm not sure, might be to hard to wrap one's head around, it would be kinda interesting to have classes that adopted themselves to who uses them though. Still it's an interesting concept, what do you think, is it viable?

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  • How do I cancel a time-delayed screenshot?

    - by coversnail
    I'm using the default screenshot application that comes with Ubuntu gnome-screenshot When I was using it earlier to take screenshots of the lock screen I had set a long time delay, but forgot to change it back after I'd finished. When I next took a timed screenshot I had to wait a long time for it to take because the delay was still set so long. Clicking the icon to relaunch the screenshot application has no effect whilst the timer is in effect, I imagine there is probably a simple terminal command to shut down an application, but I don't know it! Is there a way to do this?

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  • .NET Security Part 4

    - by Simon Cooper
    Finally, in this series, I am going to cover some of the security issues that can trip you up when using sandboxed appdomains. DISCLAIMER: I am not a security expert, and this is by no means an exhaustive list. If you actually are writing security-critical code, then get a proper security audit of your code by a professional. The examples below are just illustrations of the sort of things that can go wrong. 1. AppDomainSetup.ApplicationBase The most obvious one is the issue covered in the MSDN documentation on creating a sandbox, in step 3 – the sandboxed appdomain has the same ApplicationBase as the controlling appdomain. So let’s explore what happens when they are the same, and an exception is thrown. In the sandboxed assembly, Sandboxed.dll (IPlugin is an interface in a partially-trusted assembly, with a single MethodToDoThings on it): public class UntrustedPlugin : MarshalByRefObject, IPlugin { // implements IPlugin.MethodToDoThings() public void MethodToDoThings() { throw new EvilException(); } } [Serializable] internal class EvilException : Exception { public override string ToString() { // show we have read access to C:\Windows // read the first 5 directories Console.WriteLine("Pwned! Mwuahahah!"); foreach (var d in Directory.EnumerateDirectories(@"C:\Windows").Take(5)) { Console.WriteLine(d.FullName); } return base.ToString(); } } And in the controlling assembly: // what can possibly go wrong? AppDomainSetup appDomainSetup = new AppDomainSetup { ApplicationBase = AppDomain.CurrentDomain.SetupInformation.ApplicationBase } // only grant permissions to execute // and to read the application base, nothing else PermissionSet restrictedPerms = new PermissionSet(PermissionState.None); restrictedPerms.AddPermission( new SecurityPermission(SecurityPermissionFlag.Execution)); restrictedPerms.AddPermission( new FileIOPermission(FileIOPermissionAccess.Read, appDomainSetup.ApplicationBase); restrictedPerms.AddPermission( new FileIOPermission(FileIOPermissionAccess.pathDiscovery, appDomainSetup.ApplicationBase); // create the sandbox AppDomain sandbox = AppDomain.CreateDomain("Sandbox", null, appDomainSetup, restrictedPerms); // execute UntrustedPlugin in the sandbox // don't crash the application if the sandbox throws an exception IPlugin o = (IPlugin)sandbox.CreateInstanceFromAndUnwrap("Sandboxed.dll", "UntrustedPlugin"); try { o.MethodToDoThings() } catch (Exception e) { Console.WriteLine(e.ToString()); } And the result? Oops. We’ve allowed a class that should be sandboxed to execute code with fully-trusted permissions! How did this happen? Well, the key is the exact meaning of the ApplicationBase property: The application base directory is where the assembly manager begins probing for assemblies. When EvilException is thrown, it propagates from the sandboxed appdomain into the controlling assembly’s appdomain (as it’s marked as Serializable). When the exception is deserialized, the CLR finds and loads the sandboxed dll into the fully-trusted appdomain. Since the controlling appdomain’s ApplicationBase directory contains the sandboxed assembly, the CLR finds and loads the assembly into a full-trust appdomain, and the evil code is executed. So the problem isn’t exactly that the sandboxed appdomain’s ApplicationBase is the same as the controlling appdomain’s, it’s that the sandboxed dll was in such a place that the controlling appdomain could find it as part of the standard assembly resolution mechanism. The sandbox then forced the assembly to load in the controlling appdomain by throwing a serializable exception that propagated outside the sandbox. The easiest fix for this is to keep the sandbox ApplicationBase well away from the ApplicationBase of the controlling appdomain, and don’t allow the sandbox permissions to access the controlling appdomain’s ApplicationBase directory. If you do this, then the sandboxed assembly can’t be accidentally loaded into the fully-trusted appdomain, and the code can’t be executed. If the plugin does try to induce the controlling appdomain to load an assembly it shouldn’t, a SerializationException will be thrown when it tries to load the assembly to deserialize the exception, and no damage will be done. 2. Loading the sandboxed dll into the application appdomain As an extension of the previous point, you shouldn’t directly reference types or methods in the sandboxed dll from your application code. That loads the assembly into the fully-trusted appdomain, and from there code in the assembly could be executed. Instead, pull out methods you want the sandboxed dll to have into an interface or class in a partially-trusted assembly you control, and execute methods via that instead (similar to the example above with the IPlugin interface). If you need to have a look at the assembly before executing it in the sandbox, either examine the assembly using reflection from within the sandbox, or load the assembly into the Reflection-only context in the application’s appdomain. The code in assemblies in the reflection-only context can’t be executed, it can only be reflected upon, thus protecting your appdomain from malicious code. 3. Incorrectly asserting permissions You should only assert permissions when you are absolutely sure they’re safe. For example, this method allows a caller read-access to any file they call this method with, including your documents, any network shares, the C:\Windows directory, etc: [SecuritySafeCritical] public static string GetFileText(string filePath) { new FileIOPermission(FileIOPermissionAccess.Read, filePath).Assert(); return File.ReadAllText(filePath); } Be careful when asserting permissions, and ensure you’re not providing a loophole sandboxed dlls can use to gain access to things they shouldn’t be able to. Conclusion Hopefully, that’s given you an idea of some of the ways it’s possible to get past the .NET security system. As I said before, this post is not exhaustive, and you certainly shouldn’t base any security-critical applications on the contents of this blog post. What this series should help with is understanding the possibilities of the security system, and what all the security attributes and classes mean and what they are used for, if you were to use the security system in the future.

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  • Software Center doesn't open (elementary luna - ubuntu 12.04)

    - by zbiba
    When i try to open software center on elementary luna i get the bellow error.... ERROR:root:DebFileApplication import Traceback (most recent call last): File "/usr/share/software-center/softwarecenter/db/init.py", line 4, in from debfile import DebFileApplication, DebFileOpenError File "/usr/share/software-center/softwarecenter/db/debfile.py", line 25, in from softwarecenter.db.application import Application, AppDetails File "/usr/share/software-center/softwarecenter/db/application.py", line 27, in import softwarecenter.distro File "/usr/share/software-center/softwarecenter/distro/init.py", line 198, in distro_instance = _get_distro() File "/usr/share/software-center/softwarecenter/distro/init.py", line 175, in _get_distro distro_class = getattr(module, distro_id) AttributeError: 'module' object has no attribute 'debian' Traceback (most recent call last): File "/usr/sbin/update-software-center", line 38, in from softwarecenter.db.update import rebuild_database File "/usr/share/software-center/softwarecenter/db/update.py", line 33, in from softwarecenter.distro import get_distro File "/usr/share/software-center/softwarecenter/distro/init.py", line 198, in distro_instance = _get_distro() File "/usr/share/software-center/softwarecenter/distro/init.py", line 175, in _get_distro distro_class = getattr(module, distro_id) AttributeError: 'module' object has no attribute 'debian'

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  • Design pattern and best practices

    - by insane-36
    I am an iphone developer. I am quite confident on developing iphone application with some minimal feature. I would consider myself as a fair application developer but the code I write is not so much structured. I make vey little use of MVC because I dont seem to find places to impose MVC. Most of the time, I create application with viewcontrollers and very few models only. How could I improve the skill for making my code more reusable, standard, easy and maintainable. I have seen few books on design patterns and tried few chapters myself but I dont seem to skip my habit. I know few of them but I am not being able to apply those patterns into my app. What is the best way to learn the design patterns and coding habit. Any kind of suggestion is warmly welcomed.

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  • What is the best Video Conference integrated solution for Us? [closed]

    - by Andrei B
    we are trying to integrate a simple Video Conferencing (open source) solution into our existing application which is written in C++ and it runs on Linux. I am currently looking at using Ekiga (formely known as GnomeMeeting) or Homer Conferencing (short: Homer). My plan is to "integrate" an existing Video Conferencing client into our existing software. Please give me recommendation on which 3rd party application or library to use to add video conferencing feature to our application. PS: Please don't close this question. I asked it on StackOverflow and it got closed, so where am I supposed to ask this question? If not here, then whats the point of asking lol.

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  • Is there a Google Chrome extension or userscript that will "bottom-justify" form fields?

    - by Dennis Williamson
    When using Google Chrome, I would like to have a page scroll up so the bottom of form fields are at or above the bottom of the window when I click in the text input to begin entering something. However, if the form height is larger than the window, the top should not be scrolled off automatically. I want to go from: to: An bonus essential feature would be for the input box to automatically be resized in height (but not width) to fill the window. This feature ideally would be configurable: enable/disable and margin above and below. There should be no scrolling or resizing for one-line input boxes. Is there an extension or userscript that does something like this?

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  • How these files can be accessed?

    - by harsh.singla
    The files can be accessed from every artifact, such as .bpel, .mplan, .task, .xsl, .wsdl etc., of the composite. 'oramds' protocol is used to access these files. You need to setup your adf-config.xml file in your dev environment or Jdeveloper to access these files from MDS. Here is the sample adf-config.xml. xmlns:sec="http://xmlns.oracle.com/adf/security/config" name="jdbc-url"/ name="metadata-path"/ credentialStoreLocation="../../src/META-INF/jps-config.xml"/ This adf-config.xml is located in directory named .adf/META-INF, which is in the application home of your project. Application home is the directory where .jws file of you application exists. Other than setting this file, you need not make any other changes in your project or composite to access MDS. After setting this up, you can create a new SOA-MDS connection in your Jdev. This enables you to have a resource pallet in which you can browse and choose the required file from MDS.

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  • Using windowmaker with quartz-wm in proxy mode on Snow Leopard

    - by Graham Lee
    I can modify my .xinitrc file to exec /opt/local/bin/wmaker, and get WindowMaker 0.90.2 as my window manager in X11.app. I'd like to use quartz-wm not as a window manager, but to provide the pasteboard integration with Aqua using the --only-proxy flag (see the man page). If I add the following line to .xinitrc: exec /usr/bin/quartz-wm --only-proxy & then WindowMaker never starts, complaining that there's already a window manager running. Is it possible to get the two to play nicely together, or is proxy feature part of the Xquartz server now? It seems that the Xquartz manpage has a number of pasteboard-to-clipboard synchronisation settings, but it's not clear whether quartz-wm needs to be running for those to work.

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  • Introduction to the ADF Debugger

    - by Shay Shmeltzer
    Not that you'll ever need this blog entry - after all there are never bugs in the code that YOU write. But maybe one day one of your peers will ask you for help debugging their ADF application so here we go... One of the cool features of JDeveloper and ADF is the ADF Debugger - a way to debug the declarative pars of Oracle ADF. The debugger goes beyond your regular Java debugger and shows you in a clear way specific information related to Oracle ADF - things like where are you in the taskflow/region hierarchy, what is in your various scopes, what is the value of a specific EL and much more. However, from the number of posts on OTN where people are saying "I placed a System.out.println() to see what the value was...", it seems that not many are familiar with the power of the debugger. So here is a short demo that shows you some aspects of the debugger such as: Setting breakpoints on various ADF artifacts The ADF structure window The ADF Data window The EL Evaluater window Want to learn more about debugging ADF applications - I highly recommend that you go back in time to 2009 and attend Steve Muench's OOW presentation about ADF debugging. Can't travel in time yet? Then the second best option is to look at his very clear ADF Debugging Slides, which were the inspiration to the above demo.

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