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  • Assigning a default value to a final variable in case of an exception in Java

    - by frenetisch applaudierend
    Why won't Java let me assign a value to a final variable in a catch block after setting the value in the try block, even if it is not possible for the final value to be written in case of an exception. Here is an example that demonstrates the problem: public class FooBar { private final int foo; private FooBar() { try { int x = bla(); foo = x; // In case of an exception this line is never reached } catch (Exception ex) { foo = 0; // But the compiler complains // that foo might have been initialized } } private int bla() { // You can use any of the lines below, neither works // throw new RuntimeException(); return 0; } } The problem is not hard to work around, but I would like to understand why the compiler does not accept this. Thanks in advance for any inputs!

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  • Final enum in Thread's run() method

    - by portoalet
    Hi, Why is the Elvis elvis definition has to be final to be used inside the Thread run() method? Elvis elvis = Elvis.INSTANCE; // ----> should be final Elvis elvis = Elvis.INSTANCE elvis.sing(4); Thread t1 = new Thread( new Runnable() { @Override public void run() { elvis.sing(6); // --------> elvis has to be final to compile } } ); public enum Elvis { INSTANCE(2); Elvis() { this.x = new AtomicInteger(0); } Elvis(int x){ this.x = new AtomicInteger(x); } private AtomicInteger x = new AtomicInteger(0); public int getX() { return x.get(); } public void setX(int x) {this.x = new AtomicInteger(x);} public void sing(int x) { this.x = new AtomicInteger(x); System.out.println("Elvis singing.." + x); } }

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  • unix cut, remove first token

    - by Mike
    I'm trying to use unix cut to remove the first two fields per line. I have input lines of of the form (token)(whitespace)(token)(lots of text) The problem is that there exit n tokens per line, so I can't do something like this cut -f3,4,5,6,7,8,9 is there a way to tell cut to take everything except the specified fields

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  • Does the retina MacBook Pro Australian charger duckhead have 3 prongs on it or 2?

    - by frenchglen
    I notice that with my Retina MacBook Pro (bought in UK), its charger uses all three prongs to power the laptop (like this, rather than this). Not surprised, it's a powerful machine. I'm going to Australia now and I want to use an aussie duckhead and make use of the innovative design. I have an existing one from an old iPod (and it used to work with fine with my Macbook Air when in australia), but it's only two prongs (like this). Is that enough to power my rMBP? Or will it damage/strain it and I need to find a 3 prong one (if it even exists - I haven't bought my MBP in Australia) like this? Thanks

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  • Java: startingPath as "public static final" exception

    - by HH
    [Updated] Thanks to polygenelubricants's reply, the real problem is the exception from the method getCanonicalPath() because I cannot include try-catch-loop there. $ cat StartingPath.java import java.util.*; import java.io.*; public class StartingPath { public static final String startingPath = (new File(".")).getCanonicalPath(); public static void main(String[] args){ System.out.println(startingPath); } } $ javac StartingPath.java StartingPath.java:5: unreported exception java.io.IOException; must be caught or declared to be thrown public static final String startingPath = (new File(".")).getCanonicalPath(); ^ 1 error

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  • Why is String final in Java?

    - by Alex
    From when I learned that the class java.lang.String is declared as final in Java, I was wondering why is that? I didn't find any answer back then, but this post: How to create a replica of String class in Java? reminded me of my query. Sure, String provides all the functionality I ever needed, and never thought of any operation that would require an extension of class String, but still you'll never know what someone might need! So, does anyone know what was the intent of the designers when they decided to make it final? See also: Why is String a sealed class in C#?

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  • macbook pro for developer

    - by Michael Ellick Ang
    Which of the following choices would be more beneficial to developers ? 13 inch Macbook Pro, Core 2 Duo, 4 GB Memory, 128 GB SSD - $1550 - Faster Storage 13 inch Macbook Pro, Core 2 Duo, 8 GB Memory, 250 GB HD - $1600 - More Memory 15 inch Macbook Pro, Core i5, 4 GB Memory, 320 GB HD - $1800 - Better CPU Thanks.

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  • R: Cut and labels/breaks length conflict

    - by AkselO
    I am working with the cut function to prep data for a barplot histogram but keep running into a seeming inconsistency between my labels and breaks: Error in cut.default(sample(1:1e+05, 500, T), breaks = sq, labels = sprintf("$%.0f", : labels/breaks length conflict Here is an example. I pretend that it is income data, using a sequence of 0 to $100,000 in bins of $10,000. I use the same variable to generate both breaks and labels, with minor formating on the label side. I thought they might for some reason have different lengths when comparing to a character vector, but they appear to have the same length, still. > sq<-seq(0,100000,10000) > cut(sample(1:100000, 500, T),breaks=sq,labels=sprintf("$%.0f",sq)) > length(sprintf("$%.0f",sq)) [1] [11] > length(sq) [1] [11]

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  • final and private static

    - by xdevel2000
    I read that doing: public final void foo() {} is equals to: private static void foo() {} both meaning that the method is not overridable! But I don't see the equivalence if a method is private it's automatically not accessible...

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  • External Dell Display doesn't work with MacBook Pro (2011) after Thunderbolt Firmware Update (1.0 and 1.2)

    - by tom
    Today two Thunderbolt Firmware Updates (1.0 and 1.2) became available for my MacBook Pro (Early 2011). After installing both, my external monitor, a Dell U2713HM, does no longer work. The system detects the display, but the display shows only black. An Apple Thunderbolt display works fine and a MacBook Air can use the Dell monitor without problems. My MacBook Pro can use the Dell monitor just fine when I boot from a USB stick. Therefore, clearly the Thunderbolt Firmware Update seems to be the problem. Does anyone have the same problem? Any solutions or workarounds? I guess there is no way to remove a Thunderbolt Firmware Update once it's installed, right? Update 24.10.2013: Is there no one else with this problem? In the meantime I tried three different cables – none worked. My colleague with the same generation MacBook Pro also can't use my display after installing the firmware update. All colleagues with MacBook Airs and newer MacBook Pros (all didn't receive the firmware update) can use the display. Update 29.10.2013: Wow, ok today my new MacBook Pro Retina 13' (Late 2013) arrived. Guess what, I cannot use the display with it. Only HDMI works – not with the full resolution.

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  • Remote connect into macbook pro at a different resolution

    - by user60277
    Hello, I have a Dell laptop with Windows 7 on it. Its resolution is 1920x1080. I want to connect to a macbook pro at that resolution. The macbook pro has a resolution of 1440x900 so when I VNC into it, I can only see 1440x900 box with black borders on full resolution. The macbook pro can drive resolutions of 2560x1440. What program do I use to connect to the macbook at full (1920x1080) resolution. I can use remote desktop and connect from the dell laptop to another dell laptop that has a 1440x900 max. resolution. However in case of Remote desktop connection I can expand the window to be 1920x1080. I'm using TightVNC viewer on Windows. Thanks

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  • Remote connect into macbook pro at a different resolution

    - by user60277
    Hello, I have a Dell laptop with Windows 7 on it. Its resolution is 1920x1080. I want to connect to a macbook pro at that resolution. The macbook pro has a resolution of 1440x900 so when I VNC into it, I can only see 1440x900 box with black borders on full resolution. The macbook pro can drive resolutions of 2560x1440. What program do I use to connect to the macbook at full (1920x1080) resolution. I can use remote desktop and connect from the dell laptop to another dell laptop that has a 1440x900 max. resolution. However in case of Remote desktop connection I can expand the window to be 1920x1080. I'm using TightVNC viewer on Windows. Thanks

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  • Use MacBook Pro airport for injection with kismac

    - by Am1rr3zA
    Hi, I want use kismac to break my WEP wireless password with my MacBook Pro but when I go to step that want to inject packets it's doesn't do anything! I some where read that MacBook Pro wireless cards don't support injection! Is that right? How can I solve this? If I must buy USB Wireless Modem which one is better ?

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  • speakers dont work in macbook pro

    - by Ali_IT
    I have a macbook pro but my Built-in stereo speakers don't work and it comes a red light from Headphone out/optical digital audio out port. my Built-in stereo speakers aren't dead because at first that OS runs it comes a sound from them but as soon as the macbook pro is ready when i play music they don't work and In the SOUND in system preferences the name of device for sound output is Digital Out. Is the problem from hardware or software. Is there any solution?

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  • Import/rip/convert DVD to Adobe Premiere Pro for Mac

    - by alexyu2010
    For those who want to edit their videos, Adobe Premiere Pro will inevitably a good choice, it is a professional, real time, timeline based video editing software application that supports many video editing cards and plug-ins for accelerated processing, additional file format support and video/audio effects. Although Adobe Premiere Pro is said to be for professionals, is not so complicated that a hobbyist can't excel at using it in an hour or so. General file formats supported by Adobe Premiere Pro Up to now, Adobe Creative Suite has released several versions of Adobe Premiere Pro, including Adobe Premiere 1.0, Adobe Premiere 2.0, Adobe Premiere Pro CS3, Adobe Premiere Pro CS4 and the newly published Adobe Premiere Pro CS5. Although I saw diversity in file formats they support, I did find some common file formats supported by all of them, such as AVI, MOV, MPG. Importing DVD, Adobe Premiere Pro says "NO" It is obvious to all of us that Adobe Premiere Pro will never give DVD a hug, and it isn't rare to see that many people are really confused when they want to import their DVDs to Adobe Premiere Pro for editing. What to do? Yes, you may have noticed that, there is only a way out, that is ripping your DVDs to some formats workable with Adobe Premiere Pro natively, and this is what DVD to Adobe Premiere Pro can do. Importing DVD to Adobe Premiere Pro on Mac DVD to Adobe Premiere Pro converter for Mac is the specially designed application for ripping/converting DVD movies, DVD VOB files or DVD clips to Adobe Premiere Pro compatible AVI, MOV, MPG files with either DVD ripping tool and video converting tool within the versatile DVD to Adobe Premiere Pro converter who is a powerful program for dealing with DVD and videos perfectly. Mac DVD to Adobe Premiere Pro converter can work with a wide variety of files including DVD, VOB, AVI, WMV, MPG, MOV, MP4, DV, FLV, MKV, ASF, SWF, HD video for using with other editing tools like iMovie, FCP etc, play on QuickTime, iTunes, put on portable devices like iPod, iPhone, iPad, iRiver, BlackBerry, Gphone, Mobile Phone or upload to webistes such as YouTube, MySpace. DVD to Adobe Premiere Pro converter for Mac can also help you do some basic editing. You can trim, crop your DVD movie or DVD clip, apply special effect to make it more artistic, merge several DVD clips to a single one or tweak the output parameters for video and audio separately to get a better quality rendering. Besides, to get a good common of the process the preview widnows is also available for you.

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  • Trouble cloning a Macbook Pro hard drive

    - by Mirko Froehlich
    I am trying to upgrade the 250GB hard drive in my MacBook Pro (early 2008 model) to a 750GB drive. I have connected the new drive via an external USB enclosure. The drive is recognized fine, I can format it, etc. However, every time I try to clone the drive, I am getting Input/Output errors. Before the clone operation, I have verified both the internal and the external drive using Disk Utility, and they both check out fine. After the clone operation, the external drive shows multiple "Invalid node structure" errors: I have tried two approaches for cloning the drive: Using Disk Utility, by starting from the OSX install DVD Using Carbon Copy Cloner The outcome is the same in both cases. The Carbon Copy Cloner logs show a handful of the following types of errors: rsync: mkstemp "<... an external filename ...>" failed: Input/output error (5) rsync: stat "<... an external filename ...>" failed: Input/output error (5) The actual files affected seem to be different across different runs of the application. Before the last run, I used Disk Utility to (once more) reformat the external drive and explicitly overwrite it with zeros, but this made no difference. I also tried running a surface scan in Tech Tool Pro overnight. It got about 2/3 of the way through before I had to disconnect the drive (had to take my MacBook Pro to work), but so far it didn't report any bad blocks. Assuming it scans the drive in the same order in which blocks would be allocated during actual use, it seems like if bad blocks were to blame for the clone failures, they should have been found already (given that the source drive is only 250GB). As a last attempt, I may try SuperDuper as well, although my understanding is that it uses the same underlying rsync approach as Carbon Copy Cloner, so it's unlikely to perform any better. Are there any other things I should try before I send the drive in for a replacement? Could these problems be caused by my internal drive, even though it works fine and checks out fine in Disk Utility?

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  • Restore Bak File created on Windows XP pro in Windows XP Pro 64

    - by Kobojunkie
    I have a situation that I need help with. I backed up my Files on Windows XP using the System BackUp utility/wizard, and then Installed a new operating system on the machine. Now I want to restore my old files via the .bak file but it is not being recognized at all. Did I do this wrong or is there a way to still get back my old files on my new OS ? Thanks in advance!

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  • MacBook Pro with Time Capsule can not see Samsung CLX 3175FW wireless printer on Bonjour

    - by syncopat
    I have a MacBook Pro running OS X 10.6 and another MacBook Pro running OS X 10.5. Neither see my Samsung printer when I click on Bonjour. Needless to say neither will print. I have a Time Capsule connected wirelessly to my MacBook Pros. I have tried reinstalling drivers for the printer but nothing seems to work. I tried this approach because when Apple replaced my Time Capsule and I went to print the way I had initially been running printing requests would get hung up. Any suggestions would be helpful?

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  • MacBook Pro Boot Camp SPDIF passthrough?

    - by Ryan Zink
    I'm using Windows 7 through Boot Camp on a unibody Macbook Pro and am having problems using the SPDIF output. I get the expected Dolby Digital or DTS in some movies, but in other movies and in games (Source engine, StarCraft 2) where the output is enabled to 5.1, the output invariably shows up as Dolby Pro Logic, which means (I think) that passthrough is not enabled. The boot camp drivers for the sound card don't have any sort of control panel, and the Windows settings for enabling DTS and Dolby seem to work when I test those outputs in the sound settings. Is there some other setting or utility I can use to enable SPDIF passthrough for all programs?

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  • Mac Book Pro wakes up in my backpack

    - by J. Pablo Fernández
    This has happened to me twice: I press the power button on my Mac Book Pro, choose sleep, close it, unplug everything, confirm that is off (by pressing my ear to it) and put it in my bag. Some minutes later, the laptop wakes up by itself. Both times I caught it in time. The second time it was so hot I couldn't touch some parts -- it refused to actually wake up, and the screen was blank. Restarting it worked though. Any ideas what might be going on and/or how to prevent this? More details: It's a Mac Book Pro unibody 15" from 2009.

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  • Digital audio does not work on MacBook Pro

    - by mathk
    I have a MacBook Pro (8,2). Using a TOSLINK cable I have no digital output. Oddly enough, sometime I can hear a glitch when I plug in the cable or when I give it a gentle wiggle. My guess is that the output is not correctly detecting that I have a digital link. So is there a way to force digital audio output on a MacBook Pro? Some say that in the Audio MIDI Setup there is an option but I can't find it. I am running OS X 10.7.5.

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