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  • Is it bad practice to 'mix class and interfaces in the same package'?

    - by DerMike
    Hello, I just found something that I never heard of before and I do not agree with (by now). In an (upvoted and not further commented) answer I read "why to mix class and interfaces in the same package" So I wonder, if there are reasons to separate Interfaces and implementations in Java. I know that we are not obliged to have all implementations in the package of the interface, but is it (sometimes) wise to have none there? Regards Mike [;-)

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  • Does a good programmer need to have good spatial sense?

    - by lisa1234
    Do you need to have good spatial sense to be a good programmer? I have next to nothing of it (I think it has to do with the differing vision of my eyes). I've already coded quite little things but wonder if this interferes with the ability to 'imagine' the assembly of the code in case of a more complex program? Sorry for my english, I'm Austrian and not so used to write in English.. Thanks for your ansers..

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  • How to write contents of a JTable to a txt file....

    - by eli1987
    Hi All, I wonder if anyone could kindly tell me how to write the contents of a JTable to a .txt file. I have a basic knowledge of java and know about FileReaders etc, but just don't know how to do something as complicated as this. Thanks-please could you also provide a bit of sample code. Thanks again

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  • preg_match() find all values inside of table?

    - by mathiregister
    hey guys, a curl function returns a string $widget that contains regular html - two divs where the first div holds a table with various values inside of <td>'s. i wonder what's the easiest and best way for me to extract only all the values inside of the <td>'s so i have blank values without the remaining html. any idea what the pattern for the preg_match should look like? thank you.

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  • Java MessageDigest result does not stay constant

    - by user344146
    I've got this function for encrypting passwords in Java, but somehow when I call MessageDigest, it returns a different result every time even though I call it with the same password. I wonder if I am initializing it wrong somehow. public String encrypt (String password) { MessageDigest md = MessageDigest.getInstance("SHA-1"); md.reset(); md.update(password.getBytes(Charset.forName("utf-8")),0,password.length()); String res = md.digest().toString(); }

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  • The events go out after ajax update

    - by amirouche
    I have writed à checking/unchecking input code that works well in the fisrt loading of the page, but since I add an input via ajax then reload the inputs with the new input, the checking/unchecking event no longer works, I wonder what's the problem. thanks before

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  • exceptions thrown terminate the script?

    - by fayer
    i wonder if exceptions that are thrown in php will terminate the script in php? cause when i save an entry that is already created in doctrine it throws an exception. i catch the exception and ignore it (so that the user won't see it) but the script seems to be terminated. is there a way to catch the exception and keep the script alive? thanks

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  • jquery document height reported incorrectly by IE (on XP) first time

    - by Zhami
    I'm having a "first time" problem with IE, which reports a different value for $(document).height(); when the page first loads versus subsequent queries. The difference is 17 pixels regardless of the opening size of the window -- on document ready, the height reported is 17 pixels larger than is subsequently reported. I wonder if this is an artifact of some aspect of my page (some margins or paddings somewhere), but so far can't account for 17 pixels.

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  • Which MySql line is faster:

    - by Camran
    I have a classified_id variable which matches one document in a MySql table. I am currently fetching the information about that one record like this: SELECT * FROM table WHERE table.classified_id = $classified_id I wonder if there is a faster approach, for example like this: SELECT 1 FROM table WHERE table.classified_id = $classified_id Wont the last one only select 1 record, which is exactly what I need, so that it doesn't have to scan the entire table but instead stops searching for records after 1 is found? Or am I dreaming this? Thanks

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  • Android: how to get the walking distance between two geo coordinats?

    - by wei
    I used this query URL http://maps.google.com/maps?q=from+A+to+B&output=kml ,which is given in the answer to this question. But after I tried it, it doesn't work with coordinates. It works with address names tho. I guess I could use google's geocoding to get the addresses first. But I wonder if there is another way to get the walking distance between two coordinates?

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  • What to do to improve my skill and knowledge on javascript??

    - by caramel1991
    Currently I've finish studying the book name "beginning javascript 3rd edition",so i just wonder what should be my next step in order to strengthen myself on using and manipulating this language?Besides,how to improve myself in programming in javascript??Is it by thinking something cool myself,and start coding it??Or googling around the internet to find some task and question offered??Besides,is there any book that teaches the correct method of coding?? Thanks you

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  • How to store currently logged on user in DB?

    - by stacker
    Using Seam 2.1.2 and JSF 1.2 I wonder how to store the users login name in the database. In plain JSF I would simply lookup FacesContext.getCurrentInstance().getExternalContext().getRemoteUser();in a backing bean and set the value into a persistent object. How can I achieve that the users name will be stored in the DB?

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  • As a programmer, how much time do you spend churning?

    - by Chinnery
    I recently went through a period of frustration, "churning" as I tried to set up my environment to work effectively on a task. By the time I broke through and started to make actual progress, I felt tired and kind of angry. (I'll admit: in this case, it took me several days of banging my head and ultimately starting from scratch to finally get around the problems.) This experience made me wonder: When a roadblock happens to other programmers, how long do they churn before finally becoming productive and beginning what feels like actual work?

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  • Zend framework forms, upload file problem

    - by bounce
    Hi, I use Zend forms in my web application. I wonder where Zend puts uploded temp file by default ? I can't find it in server tmp dir. For example if I upload image(1.jpg) via file field, it appears on tmp folder, but as 1.jpg(/tmp/1.jpg). But I need temporary file like /tmp/phpeZApBn. Maybe it is in any other location ? Any help would be appreciated.

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  • is there any faster way to parse than by walk each byte?

    - by uray
    is there any faster way to parse a text than by walk each byte of the text? I wonder if there is any special CPU (x86/x64) instruction for string operation that is used by string library, that somehow used to optimize the parsing routine. for example instruction like finding a token in a string that could be run by hardware instead of looping each byte until a token is found.

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  • Listing the content of a tar file or a directory only down to some level

    - by Tim
    I wonder how to list the content of a tar file only down to some level? I understand tar tvf mytar.tar will list all files, but sometimes I would like to only see directories down to some level. Similarly, for the command ls, how do I control the level of subdirectories that will be displayed? By default, it will only show the direct subdirectories, but not go further.

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  • is it ethical to attend interview for the purpose of self evaluation?

    - by user49767
    I wonder, if it is ethical to attend interview for the purpose of self evaluation? Sometime I suspect that I am below average to my experience (but certainly not worst).And I keep reading books, do code almost everyday. But in order to understand What it takes to be a good developer and find better job when need arises, Can you guys suggest to attend interview for just self evaluation. is it ethical? Kindly share your thoughts.

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  • Why would I use Scala/Lift over Java/Spring?

    - by Chris J
    Hi, I know this question is a bit open but I have been looking at Scala/Lift as an alternative to Java/Spring and I am wonder what are the real advantages that Scala/Lift has over it. From my perspective and experience, Java Annotations and Spring really minimizes the amount of coding that you have to do for an application. Does Scala/Lift improve upon that?

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  • where should I do the calculating stuff,PHP or Mysql?

    - by SpawnCxy
    I've been doing a lot of calculating stuff nowadays.Usually I prefer to do this job in PHP rather than Mysql though I know PHP is not good at this cuz I thought mysql may be worse.But I found some performance problem :some pages were loaded so slowly that 30 seconds' timelimit is not enough for them!So I wonder which is the better practice to do the calculations,and any princles for that?Suggestions would be appreciated.

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