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  • Basic Java question?

    - by LAT
    Hi I am quite new to programming, i have a question please help me. ( this question is java question but i can't remember the syntax but what i write here is mostly it.) A class Person speaks i am a person A class Student speaks i am a student Student extends from Person Person p = new Student then what is p speaking then?

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  • SQL - Add up all row-values of one column in a singletable

    - by ThE_-_BliZZarD
    Hello Everybody, I've got a question regarding a SQL-select-query: The table contains several columns, one of which is an Integer-column called "size" - the task I'm trying to perform is query the table for the sum of all rows (their values), or to be more exact get a artifical column in my ResultSet called "overallSize" which contains the sum of all "size"-values in the table. Preferable it would be possible to use a WHERE-clause to add only certain values ("WHERE bla = 5" or something similar). The DB-engine is HSQLDB (HyperSQL), which is compliant to SQL2008. Thank you in advance :)

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  • Is there any LIBrary available in PHP to convert PDF file to HTML?

    - by OM The Eternity
    Hi all I Have a system. I which I need to edit the PDF in every specific evcent, for that I googled a lot and reached to conclusion that it can be achieved by first converting PDF to HTML, editting the HTML and then again converting the same HTML to PDF file. Is there any Library available in PHP to convert PDF file to HTML? And if anyone available with other way to achieve my task, please let me know, NOTE: PLEASE DO NOT SUGGEST ZEND FRAMEWORK USE.

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  • jQuery div container

    - by vanzylv
    I'm looking for a component to manage programmaticaly added items (div's) in a parent container.The component should scale child items. Almost like a task bar,if a new item gets added it goes in the div container.

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  • Book on C++ for understading of advance concepts

    - by Invincible
    What is good book for industry level C++ programming? I am not looking for C++ book for beginners which talk about data types and control structure. I am looking for more advance book. For example, how to build system application using C++. Any kind of guidance will be very helpful. Thank in advance.

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  • No Main() in WPF?

    - by Luminose
    I am very beginner when it comes to programming but I was sure that one of the universal rules was that an program starts with Main(). I do not see one when I create a WPF project. Is Main() simply named something differently in WPF?

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  • regular expression - function body extracting

    - by Altariste
    Hi, In Python script,for every method definition in some C++ code of the form: return_value ClassName::MethodName(args) {MehodBody} ,I need to extract three parts: the class name, the method name and the method body for further processing. Finding and extracting the ClassName and MethodName is easy, but is there any simple way to extract the body of the method? With all possible '{' and '}' inside it? Or are regexes unsuitable for such task?

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  • multiple join query in entity framework

    - by gvLearner
    I have following tables tasks id | name | proj_id 1 | task1 | 1 2 | task2 | 1 3 | task3 | 1 projects id | name 1 | sample proj1 2 | demo project budget_versions id | version_name| proj_id 1 | 50 | 1 budgets id | cost | budget_version_id | task_id 1 | 3000 | 1 | 2 2 | 5000 | 1 | 1 I need to join these tables to get a result as below task_id | task_name | project_id | budget_version | budget_id | cost 1 | task1 | 1 | 1 | 2 |5000 2 | task2 | 1 | 1 | 1 |3000 3 | task3 | 1 | NULL | NULL |NULL select tsk.id,tsk.name, tsk.project_id, bgtver.id, bgt.id, bgt.cost from TASK tsk left outer join BUDGET_VERSIONS bgtver on tsk.project_id= bgtver.project_id left outer join BUDGETS bgt on bgtver.id = bgt.budget_version_id and tsk.id = bgt.task_id where bgtver.id = 1

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  • Netbeans IDE tutorials

    - by James P.
    I mostly use Eclipse but have mentionned Netbeans on my cv. Are there any good concise and up-to-date tutorials apart from the official ones that could bring me up to speed on how to use the IDE efficiently (shortcuts, debugging, views ...)? This excludes programming tutorials as I don't really need them unless there's a special manipulation involved.

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  • How to check if internet connection is present in java?

    - by Chris
    How do you check if you can connect to the internet via java? One way would be: final URL url = new URL("http://www.google.com"); final URLConnection conn = url.openConnection(); ... if we got here, we should have net ... But is there something more appropriate to perform that task, especially if you need to do consecutive checks very often and a loss of internet connection is highly probable?

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  • MySQLi - declaring variable after bind_param?

    - by Kerry
    This may be a completely dumb question, but I've seen a couple examples declaring the variables AFTER putting them in bind_param: http://devzone.zend.com/article/686 I've never seen this done before and all my programming knowledge says I should define them before hand. Is this a valid/preferred way?

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  • Must declare function prototype in C?

    - by Mohit Deshpande
    I am kind of new to C (I have prior Java, C#, and some C++ experience). In C, is it necessary to declare a function prototype or can the code compile without it? Is it good programming practice to do so? Or does it just depend on the compiler? (I am running Ubuntu 9.10 and using the GNU C Compiler, or gcc, under the Code::Blocks IDE)

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  • Best Practice for Context Processors vs. Template Tags?

    - by mawimawi
    In which cases is it better to create template tags (and load them into the template), than creating a context processor (which fills the request automatically)? e.g. I have a dynamic menu that has to be included into all templates, so I'm putting it into my base.html. What is the preferred usage: context processor or custom template tag? And why?

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  • possible to create custom scrollbar graphics without flash?

    - by Joel
    A friend is wanting me to help her convert her flash based website to html. She has an embedded textbox with a scrollbar that is using a flower instead of a normal scrollbar. Avoiding the obvious question of why a user would want a non-standard element to do this task, is it possible to do this without flash?

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  • C++ standard thread class?

    - by srikfreak
    I have come across many ad hoc implementations of thread class in C++, but why is there no standard library thread class like the one in Java? The one that I generally use in C++ is http://www.linuxdocs.org/HOWTOs/C++Programming-HOWTO-24.html

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  • What problems does Reflection solve?

    - by Praveen
    Hi All, I went through all the posts on Reflection but couldn't find the answer to my question. Can you please tell me what were the problems in programming world before .Net Reflection came and how it solved those problems. Please explain with example.

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  • I'm still learning OOP. Any tips on staying unbiased and pragmatic?

    - by marcdev
    I keep reading about defficiencies and issues with languages. Specifically, I'm learning PHP and Javascript, but I see it everywhere. This question arose while reading Javascript: The Good Parts and PHP Objects, Patterns and Practice. While understanding and avoiding easy pitfalls, is there a way I can learn the fundamentals of OOP and discover solid programming practices without overlooking important areas (or simply becoming jaded)? I'm sure I'll have plenty of opportunity to learn from mistakes!

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  • Without width printing format in C

    - by yCalleecharan
    Hi, in C if I have a printf statement containing say "%.2f", it says that the precision is 2 digits after the decimal place. I haven't explicitly specify the width. I have two questions: Is this good programming practice?; Is without specifying the width means that the width of the field will get adjusted automatically when printing the number, irrespective of the number of digits it contains? Thanks a lot...

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  • Is there any legal problems for design an operating system?

    - by x86
    Hi everybody.. My wondering is a Programming/Business question, so here what I am thinking about, One of my big goals is to design a Computer Operating System, however if it will be just for fun, knowledge or even to be the next Windows or Linux, so if I had Programmed one, with GUI (windows,lists,buttons,etc..) and for example I will make it for Commercial use, Will Microsoft or Apple comes and drop me in legal problems just like what happened in GUI war between the two of them(Apple and Microsoft)? Thanks.

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  • Problem with generics

    - by jess
    I have this code in base class protected virtual bool HasAnyStuff<TObject>(TObject obj) where TObject:class { return false; } In child class I am overriding protected override bool HasAnyStuff<Customer>(Customer obj) { //some stuff if Customer.sth etc return false; } I am getting this error '''Type parameter declaration must be an identifier not a type''' What is it I am doing wrong here?

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