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Tag Archives: Rants

Beyond all evil: Javas definition of an object

09-Apr-08

Some days i ago, i decided to revamp my ambitions to get the scjp thingy done. What exactly for, i don’t know. But working to the self tests, i found the following:

class Ring {
  final static int x2 = 7;
  final static Integer x4 = 8;
  public static void main(String[] args) {
    Integer x1 = 5;
    String s = "a";
    if(x1 < 9) s += "b";
    switch(x1) {
      case 5: s += "c";
      case x2: s += "d";
      case x4: s += "e";
    }
    System.out.println(s);
  }
}

Questions is: Some arbitrary output or a compilation error and if, on which line.

Answer: Compilation fails due an error on line 11. What the frag? The obviously totally retarded switch statement can only handle constant values in its branches. So what? x4 is declared final static, as constant as it can be in Java. But no… Because its a big difference between int and Integer and due to the auto boxing and unboxing in Java 5 and up, the object Integer isn’t constant opposed to the scalar int.

Summary: A big deal with the SCJP is to teach the contestants how to work around some brain dead things in Java. Don’t get me wrong, i actually like Java, but the more i do in Ruby and the likes, the more some concepts in Java seem and are just wrong, like the for example not being all things equally objects.

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3 days with Linux

08-Feb-08

Since Tuesday i installed Debian Linux 4 times on my new Dell Vostro 200.

The choice of hardware was kinda stupid. I thought, well this thing is not a special thingy but plain standard. Well, seems, it isn’t.

The first setback was, that the Debian installer booted from CD-Rom but didn’t recognize it afterwards. Yippie… I had to change the SATA Bios settings from IDE to RAID which means in reality, to AHCI. 2 things changed: Debian can be installed from CD-Rom and the dualboot Windows went nuts, i.e. crashed with a BSOD, even in safe mode. Solution to that was first switching back to IDE mode, installing some Intel driver for RAID thingies (really, there’s no raid in the machine… *sigh*), switch back et voila.

Next thing: The ethernet controller was to new. It’s kinda e1000 but not yet supported in the current testing kernel. The driver can be downloaded at intels site. I’ve chosen to skip network while installation and downloaded a full image. If you want to install from a netinstall image and have no 2nd nic at hand, here you’ll find a precompiled module. The blogs seems well written, but i wouldn’t call the Vostro a bunch of crap. The thing is very low noise, with Windows XP rock solid (at least at my workplace {i actually have two of them, at work and now at home}) and i appreciate the Dell pickup service. Another great howto is presented at the Ubuntu forums.

The next closed source thing i installed where the ATI drivers from here without a problem.

The things that lead to multiple reinstalls where the decision between KDE and GNOME. I just wanted to test them and didn’t want to purge every single package afterwards. In the end i went for GNOME.

So now i have a Desktop with the preinstalled Vista on a one partition and my new all day Debian system on a fully encrypted LVM partition. The later one was really no big deal to create with the Debian installer. The whole filesystem is encrypted except a boot partition and a relatively big space which i wanna spent on virtual machines.

prego stated that i should spent some energy into compiz. I already are accustomed to continuous zoom in the whole desktop, some nice effects and semi transparent windows through Mac OS X, for that to say, but i didn’t want to add non “official” repositories. In the end, i give it a try and followed the instructions here and used the instructions for the xorg.conf from here without that Xgl thingies. What can i say: It works and looks great. The wobbling windows are hilarious :D

For my photo collection i already installed digiKam, which is a great tool.

Next steps are migrating my email from Apple Mail.app to a local IMAP server. Anyone suggestions which email client to use?

A friend tried to convince me several times to reinstall my Macbook for good but i don’t want to. Things used to work and broke with an OS update. And no, i’m not using *any* of the OS X system hacks. I used to be able to upgrade from release to release (hell, the iMac made it from 10.3.8 to 10.5.1 without a problem) and all of sudden i’m back in windows times: Upgrade and you’re doomed. Suck my dick… I don’t wanna go this path ever again. And then there the recent developments with Apple. I’ve been wearing a t with “Think different” know for about 5 years, i always like their products, the integration of Unix and eyecandy. But the apps are getting worse with every new release the last months. Apples behaviour to make you pay for a simple software upgrade (sarbane oxley my ass…, i’m expecting the first bugfix to be payed because the OS is no abo related model). OS Xs unablity to encrypt the whole volume (it can encrypt your home folder in some silly image file) without external tools (recently, Truecrypt can do this.

Stop. Must… breath… again.

In the end, i think three days without much sleep were well spend.

As before, i’ll keep you updated, if you like :)

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Apple’s making me sick…

04-Feb-08

iTunes changing music tagged Soundtrack to Filmmusik, another thread and guess what, i experienced the same feature.

I really like some of the “i take care of your problems stuff” like don’t thinking in mp3 files anymore but in a collection but this is nuts. I choose soundtrack as a genre intentionally and nothing else.

I really do like Apples iTunes but thats way over the top. Why not randomly rename the songs instead? And please nobody tell me i have a problem with id3tags. I tagged every single file with id3tag v2.3 after encoding them with lame, the tags are correct. Bah, i think i’m gonna puke.

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Negative Erlebnisse

11-Dec-07

Ein kurzes Update bzgl. meiner Installation von Oracle VM Server.

Der VM Server ist stupide einfach zu installieren. Alles, was danach folgt, ist eine Qual, wenn man einmal den Komfort von apt-get, debian und co. kennen gelernt hat. Ich habe gerade das Gefühl, ich werde wahnsinnig dabei.

Es ist unter Oracle Enterprise Linux ohne weiteres nicht möglich, nachträglich noch weitere Pakete aus den Installations CDs zu installieren. Dazu braucht man einen Account im Oracle Unbreakable Linux Netzwerk. Ich will die Schuld nicht alleine Oracle anlasten, bei RedHat läuft es wohl genauso.

Worauf ich hinaus will: Der Erfahrungsbericht folgt, allerdings später, als geplant.

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Why Apple users seems odd sometimes

29-Oct-07

Some Apple users are happy about a “goto line xy” function in a shitty text editor:

Leopard Love: “Go To” in TextEdit

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