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  • Why is my file being cleared if I don't save it?

    - by Kat
    My program is suppose to maintain a collection of Photos in a PhotoAlbum. It begins by reading a folder of photos and adds them to my PhotoAlbum. It then prints a menu that allows the user to list all the photos, add a photo, find a photo, save, and quit the program. Right now if I run my program it will add the 100 photos to the PhotoAlbum, but if I quit the program without saving, it clears the file I am reading from even if I haven't added a photo or done anything to the PhotoAlbum and I'm not sure why. Here is my method for printing to a file: private static void saveFile(PrintWriter writer) { String result; ArrayList<Photo> temp = album.getPhotoAlbum(); for (int i = 0; i < temp.size(); i++){ result = temp.get(i).toString() + "\n"; writer.println(result); } writer.close(); } And where the PrintWriter is instantiated: File file = new File(args[0] + File.separator + "album.dat"); try { PrintWriter fout = new PrintWriter(new FileWriter(file)); fileWriter = fout; } catch (IOException e){ System.out.println("ReadFromFile: Folder " + args[0] + " is not found."); System.exit(0); } And where it is called in my runMenu Method: private static void runMainMenu(Scanner scan) { String input; do { showMainMenu(); input = scan.nextLine().toLowerCase(); switch (input.charAt(0)) { case 'p': System.out.println(album.toString()); break; case 'a': album.addPhoto(readPhoto(scan, t)); break; case 'f': findMenu(scan); break; case 's': saveFile(fileWriter); System.exit(0); break; case 'q': break; default: System.out.println("Invalid entry: " + input.charAt(0)); break; } } while (!input.equalsIgnoreCase("q")); }

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  • Strange behaviour of NSString in NSView

    - by Mee
    Trying to create a Skat-Game, I encountered the following problem: isBidding is a Boolean value indicationg, the program is in a certain state, [desk selected] is a method calling returning the current selected player, chatStrings consists of dictionaries, saving strings with the player, who typed, and what he typed - (void)drawRect:(NSRect)rect { NSMutableDictionary * attributes = [NSMutableDictionary dictionary]; [attributes setObject:[NSFont fontWithName:playerFont size:playerFontSize] forKey:NSFontAttributeName]; [attributes setObject:playerFontColor forKey:NSForegroundColorAttributeName]; [[NSString stringWithFormat:@"Player %i",[desk selected] + 1]drawInRect:playerStringRect withAttributes:attributes]; if (isBidding) { [attributes setObject:[NSFont fontWithName:chatFont size:chatFontSize] forKey:NSFontAttributeName]; [attributes setObject:chatFontColor forKey:NSForegroundColorAttributeName]; int i; for (i = 0; i < [chatStrings count]; i++, yProgress -= 20) { if (isBidding) [[NSString stringWithFormat:@"Player %i bids: %@",[[[chatStrings objectAtIndex:i]valueForKey:@"Player"]intValue], [[chatStrings objectAtIndex:i]valueForKey:@"String"]] drawAtPoint:NSMakePoint([self bounds].origin.x, yProgress) withAttributes:attributes]; else [[NSString stringWithFormat:@"Player %i: %@",[[[chatStrings objectAtIndex:i]valueForKey:@"Player"]intValue], [[chatStrings objectAtIndex:i]valueForKey:@"String"]] drawAtPoint:NSMakePoint([self bounds].origin.x, yProgress) withAttributes:attributes]; } if (isBidding) [[NSString stringWithFormat:@"Player %i bids: %@",[desk selected] + 1, displayString] drawAtPoint:NSMakePoint([self bounds].origin.x, yProgress) withAttributes:attributes]; else [[NSString stringWithFormat:@"Player %i: %@",[desk selected] + 1, displayString] drawAtPoint:NSMakePoint([self bounds].origin.x, yProgress) withAttributes:attributes]; yProgress = chatFontBegin; } } This is the part determining the string's content, the string is contributed by an [event characters] method. -(void)displayChatString:(NSString *)string { displayString = [displayString stringByAppendingString:string]; [self setNeedsDisplay:YES]; } The problem if have is this: when typing in more than two letters the view displays NSRectSet{{{471, 574},{500, 192}}} and returns no more discription when I try to print it. then I get an EXC_BAD_ACCESS message, though I have not released it (as far as I can see) I also created the string with alloc and init, so I cannot be in the autorelease pool. I also tried to watch the process when it changes with the debugger, but I couldn't find any responsible code. As you can see I am still a beginner in Cocoa (and programming in general), so I would be really happy if somebody would help me with this.

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  • Facebooker2 template issue

    - by Srini
    Hi, When i include fb_connect_async_js javascript helper it is throwing an error , Facebooker 2 don't have action view template. Could you please tell me how handle this situation . undefined local variable or method `fb_connect_async_js' for ActionView::Base Thanks, Srini

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  • Security of WCF endpoints

    - by Matt
    For the sake of argument, lets say that I've got a basicHttp WCF service. Besides implementing authentication (login/logout methods), what is stopping someone from just cracking open Visual Studio, adding a web reference to my website's service, and then playing playing around with my service? I'm not familiar with a method of stopping someone from doing this. The idea of someone downloading all of my Data/Operation contracts and then start playing around is keeping me up at night, and I like my sleep!

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  • NSTableViewCell uses value from other cells

    - by Michael Z
    Hi Guys: I have problem with using dequeueReusableCellWithIdentifier method. Whenever I use this one, one cell would display its own value and value that does not belong to it. This first and second images show the problem, while the third image shows the proper data.The problem seems to be caused by old value not being wiped off and the new value being added on top if it. Which seems very strange.

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  • CodeIgniter helper inside controllers

    - by kapitanluffy
    can i call helper functions inside controller classes? let's say i have this controller with the _open_form method class User extends Controller { function _open_form($action){ print_r(form_open($action)); } } i tried echoing out the result of form_open() but it returns null. it seems that helper functions can't be called inside controllers if your wondering why i need to use it inside the controller instead in the view because we are required to use the given template parser xD

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  • Sending data from one Protocol to another Protocol in Twisted?

    - by veb
    Hi! One of my protocols is connected to a server, and with the output of that I'd like to send it to the other protocol. I need to access the 'msg' method in ClassA from ClassB but I keep getting: exceptions.AttributeError: 'NoneType' object has no attribute 'write' Actual code: http://pastebin.com/MQPhduSY Any ideas please? :-)

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  • New to ASP.NET: Webforms vs MVC2

    - by Sahat
    I am new to ASP.NET Development and can't decide between developing with Webforms or MVC 2. Nevermind the pros and cons of each. I've seen mixed opinions of each. But which method would be the best for someone who has no prior experience in ASP.NET or C#? If your answer is: learn both, then which should I learn first? MVC 2 or Webforms?

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  • Java Apache Commons users

    - by Tom Brito
    Is there anything in apache commons to convert a Object to byte array, like the following method does? public static byte[] toByteArray(Object obj) throws IOException { ByteArrayOutputStream baos = new ByteArrayOutputStream(); ObjectOutputStream oos = new ObjectOutputStream(baos); oos.writeObject(obj); oos.flush(); byte[] data = baos.toByteArray(); return data; } [try-finally block closing buffers were omitted to simplify]

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  • error in midlet while implementing command..

    - by garima
    hi I have imported import com.sun.lwuit.Command; import javax.microedition.midlet.; import javax.microedition.lcdui.; in my code but still the following errors are coming... exitCommand = new Command("Exit", Command.EXIT, 2); //line 1 textbox.addCommand(exitCommand); //line 2 Command.EXIT cannot be resolved.. The method addCommand(Command) in the type Displayable is not applicable for the arguments (Command)

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  • How do I... truncate string in an array

    - by ander163
    In a ruby on rails app, I build an array of Project Names and project id values, but want to truncate the length of the names. Current code is: names = active_projects.collect {|proj| [proj.name, proj.id]} I have tried to add a truncate function to the block, but am getting undefined method for class error. Thanks in advance - I just cannot wrap my head around this yet.

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  • strip all <img> tags within a div

    - by Andrew Welch
    Hi, I have a jcycle plugin on a number of divs which are testimonials. Basically I don't want to show the tag in the testimonial viewed in a block on the front page but rather I do want it to show on another page. So I want to add some jquery or another method that strips the img tags for the front page display. Any ideas how to do this? Thanks Andy

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  • What is the best way to store incremental downloaded data?

    - by afriza
    Inspired by Chromium's sha1 class, I am thinking to store incrementally downloaded data using std::string // pseudo-code char buff[BUFF_SIZE]; std::string data; do { size = ReadInternetFileTo(buff,BUFF_SIZE); data.append(buff,size); } while (not_finished); Any foreseeable problems with this method or better way to do it?

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  • asp.net mvc got 405 error on HTTP DELETE request?

    - by DucDigital
    Hi everyone... Im trying to pass the DELETE to a url in asp.net mvc using Javascript but however i always got "405 Method not allow" return. is there anyway to make this work? FYI: i've put the [AcceptVerb(HttpVerb.Delete)] attribute on my controller. DELETE /post/delete/8 this is the request

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  • Nstableview group style for nsoutlineview

    - by joels
    I like the look of the group rows in the nstableview. In apple mail, the group sections like mailboxes and rss with that style too. Is there an easy way to make a group row or root item in an nsoutlineview to look like that? I think I have to override the willDisplayCell method...

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  • junit mock objects

    - by Codenotguru
    i am new to junit so any help is appreciated. I have a class called sysconfig.java for which i have written a junit class file called TestSysconfig.java that tests some methods in the sysconfig.java. The method that i am testing in sysconfig.java calls another class file "ethipmapping.java" i have created a mock of this class file as Testethipmapping.java. so my question is how do i tell sysconfig.java to call this mock object?

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  • Mimic C preprocessor with Python/Ruby?

    - by prosseek
    I need to mimic the preprocessor feature of C with Python. If I want to run the debug release, I use as follows with C #ifdef DEBUG printf(...) #endif I just use -DDEBUG or similar to trigger it on or off. What method can I use for Python/Ruby? I mean, what should I do to control the behavior of python/ruby scripts in such a way that I can change a variable that affects all the script files in a project?

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  • What exception is thrown if a web service i'm using Times Out?

    - by BT
    I'm calling a .NET web service within my existing .NET webservice, i would like to know what exception is thrown from the web method if timeout happens, i have set the web service timeout to some lower value then the default 90 sec. and want to add business logic if time out happens. Is this the exception i should be looking at? System.Net.WebException

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  • Newlines in the Immediate Window

    - by Bob Kaufman
    Using Visual Studio 2010 Professional, I have a ToString() method that looks like this: public override string ToString() { return "something" + "\n" + "something"; } Because there are several "something"'s and each is long, I'd like to see something something Sadly, I'm seeing "something\nsomething" Is there a way to get what I want?

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  • How can I detect if an iPhone is rotating while being face up in a table?

    - by OscarMk
    Hello, Is there a way to detect if an iphone lying down in a table face up is rotating?. I do realize that this kind of movement is not reported by the accelerometer and neither is it reported to the - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation method. Is there a way to detect angle variations for the phone rotating this way?. Thank you.

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