I'm currently working on a school project related to QR Codes generation, and i have a really huge problem with the error correction system. I found this website http://www.pclviewer.com/rs2/calculator.html, it works like a charm but it's an online tool, and i need this exact functionality ported in Java. Is there any way i can found this ? I tried the zxing class but i can't figure how to only use the Reed-Solomon part (because of course it's the only part i can use).
Thanks you all for answers, and have a good day.
You should use the implemenation in zxing. I know you say you couldn't figure it out, but, surely if you look at the code you see the API. It doesn't get much simpler than:
https://code.google.com/p/zxing/source/browse/trunk/core/src/main/java/com/google/zxing/common/reedsolomon/ReedSolomonEncoder.java#52
https://code.google.com/p/zxing/source/browse/trunk/core/src/main/java/com/google/zxing/common/reedsolomon/ReedSolomonDecoder.java#58
You can see how these are used, even, in QR codes:
https://code.google.com/p/zxing/source/browse/trunk/core/src/main/java/com/google/zxing/qrcode/decoder/Decoder.java#191
Related
A friend and I decided to code a discord bot in Java, using JDA. The idea is for the bot to give you a request Minecraft recipe (a picture of it). However, we don't want to have to download every single recipe (there are way too many of them). So I was wondering if there's something we can use that would give us the recipes with pictures and everything, like an API or a website that we can access from the Java code that would return something we can use. (No code attached since we haven't really done anything and it would serve no purpose).
I am not sure if an API exists that can do that for you. If the problem is spending the time to download every single recipe I might recommend creating a webscraper that could get that data from you. Getting the images from a site like https://www.minecraftcrafting.info/ would be fairly straight forward using python and beautifulsoup (https://pypi.org/project/beautifulsoup4/). Hope that helps and good luck!
I got stuck with one problem since a few months ago. Now I recall it and stand still get the same problem. I want to make JasperReports Server can print report without exporting to pdf format. And I also got some clues for that. To do so, we need to use JasperReport API. However, I don't really know how to use that library. Also as I searched, I can see only this link: http://community.jaspersoft.com/wiki/jasperreports-library-tutorial but it's not describable.
Is it the right API?
If it is my right, have you ever experienced with printer as mention above?
Do you have sample process, sample code, or configuration?
Please help me solve. Any ideas, or solutions are really appreciated
Sakura
Take a look at http://jasperreports.sourceforge.net/sample.reference/printservice/index.html.
Note the name of the printers are commented. You will need to change the name to suit your needs.
I'm trying to set up a simple helloworld demo with Sphinx 4.0 (which is apparently a beta?) I downloaded the source and added it as source to Eclipse, but the problem is, it doesn't recognize a lot of the classes. I've been looking, and as far as I can tell, the classes it wants just aren't there! For example, the line:
import javax.speech.Central;
throws a compiler error, saying something about how the import couldn't be resolved. Is this a part of a bigger API I was supposed to download before trying to do Sphinx4? It didn't say anything about any other API but I'm open to the possibility.
If you want, I can post a list of all the imports that can't be resolved, I will, but that means looking through all the code which is kind of a pain. I have a hunch that I need to download the JSAPI, but I don't know which implementation would be good for Sphinx4.
Links to Sphinx4 downloads:
http://sourceforge.net/projects/cmusphinx/files/sphinx4/1.0%20beta6/
http://cmusphinx.sourceforge.net/
EDIT: In addition, I've found a few lines that I think might mean I need to download JUnit? Again, I'm not totally sure how to set this up.
The great thing about this site is that the simple act of typing out a question and nervously analyzing it before finalizing any revisions (because, after all, someone WILL read this!) 95% of the time I answer my own question within 5 minutes of posting it.
Anyways, the solution was simple, I downloaded junit4-10.jar and jsapi.jar and added them to my Java build path. Then, I got more errors, and I said TO HECK with building from the source (which I was doing with sphinx4 here) and I just downloaded the already-built library and it works great. Got the HelloWorld I wanted!
I am a student and as a project i have to implement a barcode(1-D) based attendance marking system.While surfing across the web i came to know that barcode readers are a bit costly toys to purchase,so now what I want to do is I want to capture images of barcodes through a capturing device(mostly a webcam) and then process them to get the content stored in it.
I found a few projects on the internet that do the same but they use .NET f/w and I am not so familiar with .NET technology. The only project that uses java is http://sourceforge.net/projects/javabarcoderead/ but somehow i am not able to run the jar file they are providing.
SO, I would like to know about the algorithms or methods that can be used for the same or even any project from where i can get some insight on how to move further with this...
Happy Coding...
You're right, it would be very difficult to use a library with no documentation and no source code.
I'd suggest using ZXing. It's a well-documented library with lots of examples.
First of all I would like to say thanks in advance because I know this is the best website to get answers related to IT problem.
Currently I am working on Code Generation that would convert my Class Beans(simple class
files) from J2SE to J2ME now my problem is that I want to have my serialize and de-serialize
for each class and wondering how could I use J2ME Polish library.
have a look at their web page. Serialization is pretty good explained, even with a short example. Click me.
They have also put together a example app that is quite illustrative. See ${polish.home}/samples/serialization
HTH