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  • Software Architecture

    - by Roger
    I have a question about Software Architecture, anyone can help me or give me some hints currently, I have a J2EE project which deploys in a server, I should a Java Standard project(J2SE) should run 24 hours x 7 days to monitor something it could not run separately, because the Java Project shared the some same classes such as Java Bean classes with the J2EE project maybe my design is not correct, can anyone suggest me what should I do? Using SOA? is this correct? my current solution is run this java project using a bash, but I dont think it is then best idea. I list my class packages com.company.alteck com.company.altronics com.company.gamming com.company.jaycar com.company.jup com.company.rpg com.company.sansai com.company.wiretech com.company.yatsal com.ebay.api com.ebay.bean com.ebay.credential com.ozsstock.finals com.ozstock.adapter com.ozstock.aspectj com.ozstock.model com.ozstock.persistence com.ozstock.service com.ozstock.suppliers my structure likes this, all the packages contains "company" should run separately, but depends on the model bean class. can anyone give me some hints to redesign?

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  • How will this affect my SEO ranking?

    - by dunc
    I run a fishkeeping website based on a WordPress (PHP) CMS. I've recently put a fairly complex "filter" into place which searches my content for mentions of fish species profiles and turns them into an active link. For example, asdasd this is a test about abdomen to see if the caudal fin will work asdadasdas try again with abdomen and A. panduro and Apistogramma panduro ...becomes asdasd this is a test about abdomen to see if the caudal fin will work asdadasdas try again with abdomen and <a href="/?p=1703" class="link_species">A. panduro</a> and <a href="/?p=1703" class="link_species">Apistogramma panduro</a> On the rest of my website, the species are linked with pretty URLs such as /species/apistogramma-panduro/ but due to the way this filter works, the only information I can get access to is the idof the post. As such, I'm using /?p=1703 or whatever the ID is. What I'd like to know is: how much will this affect my SEO rating/ranking? Will it be detrimental if I don't rewrite the function? Thanks in advance,

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  • Need Help to fix hmtl.sty not found error

    - by GGS
    I installed texlive 2012 on ubuntu 12.04 LTS 64 bit machine following the instructions given in the following web How do I install the latest TeX Live 2012? After, a successful installation( I think), I got the following error when I do a pdflatex to compile a give tex file This is pdfTeX, Version 3.1415926-2.4-1.40.13 (TeX Live 2012/Debian) restricted \write18 enabled. entering extended mode (./user_guide.tex LaTeX2e <2011/06/27 Babel and hyphenation patterns for english, dumylang, nohyphenation, lo aded. (/usr/share/texlive/texmf-dist/tex/latex/base/article.cls Document Class: article 2007/10/19 v1.4h Standard LaTeX document class (/usr/share/texlive/texmf-dist/tex/latex/base/size12.clo)) ! LaTeX Error: File `html.sty' not found. Type X to quit or to proceed, or enter new name. (Default extension: sty) so would you help me in getting a solution? Thank you in advance

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  • Am I violating LSP if the condition can be checked?

    - by William
    This base class for some shapes I have in my game looks like this. Some of the shapes can be resized, some of them can not. private Shape shape; public virtual void SetSizeOfShape(int x, int y) { if (CanResize()){ shape.Width = x; shape.Height = y; } else { throw new Exception("You cannot resize this shape"); } } public virtual bool CanResize() { return true; } In a sub class of a shape that I don't ever want to resize I am overriding the CanResize() method so a piece of client code can check before calling the SetSizeOfShape() method. public override bool CanResize() { return false; } Here's how it might look in my client code: public void DoSomething(Shape s) { if(s.CanResize()){ s.SetSizeOfShape(50, 70); } } Is this violating LSP?

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  • Will my game engine be compatible with physics engines?

    - by Bane
    My engine supports Scene handling, Cameras, and has a Renderer. Also, it has a class called Drawable, which has the position, the shape and the picture of an object. The picture property has width, height, rotation and a draw method. All game objects are supposed to inherit from this Drawable class, and are added to the Scene, along with a Map (collection of Tiles, that also inherit from Drawable), lights, and so on and so forth. The shape property of a Drawable is a Polygon, a collection of user defined vertices around the position of a Drawable (this is a relative coordinate system, so [0, 0] is the position of the Drawable. With this setup, will the users of my engine (probably only me) still be able to intergrate physics engines such as Box2DJS into their games?

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  • Going from webforms, VS 2008, 3.5 framework to the "next level" based on my goals

    - by Caveatrob
    I've got a few choices to make as I develop some business websites that will run for the next two to three years. Currently I run ASP.NET 3.5 with Visual Studio 2008. I do my development rather crudely in WebForms because that's what I learned and am most productive with. I don't use Membership or any other frameworks in my projects. I use a simple class that maintains a few session keys for each user based on basic database tables for users and roles. (I have about 3,000 users). So far I've kept the data simple, using ADO.NET against SQL Server and a data access class (Circa 2000, I know) to build my sites. My questions are as follows: Under what conditions would I be better off moving to MVC? Under what conditions would I find LINQ and ORM a better way to go than standard ADO.NET? Would I benefit, in my current state of development, from going from Studio 2008 to Studio 2010?

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  • Using static methods in objects PHP - is it advantage?

    - by RePRO
    I was reading some articles and discussions on the use of static methods on objects and it struck me how much the views differ. Someone say that using static methods is an advantage. Someone says that use is a big mistake. I wonder how is it? My question is when to use static methods and when not? I would like to hear answers from experts in this field (PHP OOP). This is because I know how it really is. The following code should be analogous. Just call the static method is simpler (my opinion): <?php class A { public function write($a) { echo $a; } } class B { public static function write($a) { echo $a; } } $a = new A; $a->write(5); // 5 B::write(5); // 5 ?> Thank you.

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  • XNA content.load Dependancy

    - by Richard
    Quick question, My project i'm building for test purposes is working fine but i have dependencies flying around everywhere due to the XNA framework. In Update i have gametime passed everywhere... this is okay. In Draw i have gametime & spritebatch passed everywhere... this is okay. My issue is in the content.load textures/sounds/fonts. I have them as public variables ie Texture1 = Content.load(of texture2d)("Texture1") I'm passing a 'Game1' pointer into the constructor of every new class being instantiated to gain access to these variables. Am i missing an OOP trick to prevent me having to pass a pointer to 'game1' to every New class?

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  • C# : Parsing information out of a path

    - by mbcrump
    If you have a path for example: \\MyServer\MyFolderA\MyFolderB\MyFile.jpg and you need to parse out the filename, directory name or the directory parent name. You should use the fileinfo class instead of a regex expression or a string split. See the example code below:   Code Snippet using System; using System.IO;   class Test {     static void Main(string[] args)     {         string file = @"\\MyServer\MyFolderA\MyFolderB\MyFile.jpg";         FileInfo fi = new FileInfo(file);         Console.WriteLine(fi.Name);                  // Prints File.jpg         Console.WriteLine(fi.Directory.Name);        // Prints FolderB         Console.WriteLine(fi.Directory.Parent.Name); // Prints FolderA     } }

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  • Clarify the Single Responsibility Principle.

    - by dsimcha
    The Single Responsibility Principle states that a class should do one and only one thing. Some cases are pretty clear cut. Others, though, are difficult because what looks like "one thing" when viewed at a given level of abstraction may be multiple things when viewed at a lower level. I also fear that if the Single Responsibility Principle is honored at the lower levels, excessively decoupled, verbose ravioli code, where more lines are spent creating tiny classes for everything and plumbing information around than actually solving the problem at hand, can result. How would you describe what "one thing" means? What are some concrete signs that a class really does more than "one thing"?

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  • What's the correct approach for passing data from several models into a service?

    - by Doug Chamberlain
    I have an AccountModel and a page where the user can upload a file. What I would like to have happen is when the user uploads the file. The PageController does something like the following. this is a quick attempt just written in the question to illustrate my question. public class PageController : Controller { private Service service; public ActionResult Upload(HttpPostedFileBase f){ service.savefile(f,_AccountModel_whatever.currentlyloggedinuser.taxid) } } public class Service { // abunch of validation and error checking to make sure the file is good to store } Wouldn't this approach be in bad practice? Since I'm making my controller dependent on the existence of th AccountModel? This will become a HUGE program over the next few years, and I really want to maximize the quality of the framework now.

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  • Windows 7 Tips and Tricks: Tweaking the Interface

    By default the look of Windows 7 is an improvement over its predecessors in the Windows operating system lineup. Windows 7 s interface not only looks better it also seems to be more user-friendly with the various features it affords its users. While you can enjoy the latest Windows OS without making any adjustments to it there are plenty of tweaks that can help you change and improve its appearance. This multi-part series will offer up some of the tweaks that you can easily apply to your own PC.... Comcast? Business Class - Official Site Sign Up For Comcast Business Class, Make Your Business a Fast Business

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  • Several classes need to access the same data, where should the data be declared?

    - by Juicy
    I have a basic 2D tower defense game in C++. Each map is a separate class which inherits from GameState. The map delegates the logic and drawing code to each object in the game and sets data such as the map path. In pseudo-code the logic section might look something like this: update(): for each creep in creeps: creep.update() for each tower in towers: tower.update() for each missile in missiles: missile.update() The objects (creeps, towers and missiles) are stored in vector-of-pointers. The towers must have access to the vector-of-creeps and the vector-of-missiles to create new missiles and identify targets. The question is: where do I declare the vectors? Should they be members of the Map class, and passed as arguments to the tower.update() function? Or declared globally? Or are there other solutions I'm missing entirely?

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  • Notes - Part I - Say Hello from Java

    - by Silviu Turuga
    Sometimes we need to take small notes to remember things, one way to do this is to use stick notes and have them all around our desktop. But what happening if you have a lot of notes and a small office? You'll need a piece of software that will sort things for you and also it will provide you a quick way to retrieve the notes when need. Did I mention that this will keep your desktop clean and also will reduce paper waste? During the next days we'll gonna create an application that will let you manage your notes, put them in different categories etc. I'll show you step by step what do you need to do and finally you'll have the application run on multiple systems, such as Mac, Windows, Linux, etc. The only pre-requisition for this lesson is to have JDK 7 with JavaFX installed and an IDE, preferably NetBeans. I'll call this application Notes…. Part I - Say Hello from Java  From NetBeans go to Files->New Project Chose JavaFX->JavaFX FXML Application Project Name: Notes FXML name: NotesUI Check Create Application Class and name it Main After this the project is created and you'll see the following structure As a best practice I advice you to have your code in your own package instead of the default one. right click on Source Packages and chose New->Java Package name it something like this: com.turuga.notes and click Next after the package is created, select all the 3 files from step #3 and drag them over the new package chose Refactor, as this will make sure all the references are correctly moved inside the new package now you should have the following structure if you'll try to run the project you'll get an error: Unable to find class: Main right click on project name Notes and click properties go to Run and you'll see Application Class set to Main, but because we have defined our own packages, this location has been change, so click on Browse and the correct one appear: com.turuga.notes.Main last modification before running the project is to right click on NotesUI.fxml and chose Edit (if you'll double click it will open in JavaFX Scene Builder) look around line 9 and change fx:controller="NotesUIController" to fx:controller="com.turuga.notes.NotesUIController" now you are ready to run it and you should see the following On the next lesson we'll continue to play with NetBeans and start working on the interface of our project

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  • Teaching java interfaces to absolute beginners: What is a good example? [closed]

    - by mrsteve
    Possible Duplicate: Explaining interfaces to beginning programmers? I searched on stackoverflow and here for a good example to teach java interfaces in a beginners class. I found the following post: http://stackoverflow.com/questions/416331/java-interfaces The Official Java-Tutorial and the references feature examples that are quite good but I would need a very simple example to start with for my class. I don't think the offical tutorial is the best resource for absolute beginners. The students are easily confused, and the most effective example would help. Any pointers or experience in teaching java interfaces?

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  • Getting data from csv file and returning objects in collections

    - by Jacob
    I have very simple class of person as below: public class Person { int ID; Gender gender; Date dateOfBirth; public Person(final int iD, final Gender gender,final Date dateOfBirth) { ID = iD; this.gender = gender; this.dateOfBirth = dateOfBirth; } } Gender is enum : public enum Gender { Male, Female } In CSV file i will have data, for example: 1;Male;23-02-2001 2;Female;11-06-1989 3;Male;02-12-1999 Is in java any simple way to get all persons from csv file and return it as ArrayList<Person> persons ?

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  • Windows 7 Tips and Tricks: Tweaking the Interface

    By default the look of Windows 7 is an improvement over its predecessors in the Windows operating system lineup. Windows 7 s interface not only looks better it also seems to be more user-friendly with the various features it affords its users. While you can enjoy the latest Windows OS without making any adjustments to it there are plenty of tweaks that can help you change and improve its appearance. This multi-part series will offer up some of the tweaks that you can easily apply to your own PC.... Comcast? Business Class - Official Site Sign Up For Comcast Business Class, Make Your Business a Fast Business

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  • What is this called?

    - by robertlewis2001
    I'm hoping there's a book or something out there for me to get... If I have a class that has Collection as an instance variable, what is that method of coding called? A design pattern? If so, where can I find more information on it? As I've been working with this mentor, he's really helped me understand my programming weakness and that weakness is thinking in terms of collections or relationships between objects. It just seems so difficult for me right now and I need to read to become smarter. My mentor is a great guy, but he gets frustrated when I start asking lots of questions, so I'm starting to feel like I need to learn more on my own. public class Evaluation { private List<Criterion> criterion = null; public Evaluation() { criterion = new List<Criterion>(); } }

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  • Two divs, one fixed width, the other, the rest

    - by Shamil
    I've got two div containers. Whilst one needs to be a specific width, I need to adjust it, so that, the other div takes up the rest of the space. Is there any way I can do this? <div class="left"></div> <div class="right"></div> // needs to be 250px .left { float: left; width: 83%; display: table-cell; vertical-align: middle; min-height: 50px; margin-right: 10px; overflow: auto } .right { float: right; width: 16%; text-align: right; display: table-cell; vertical-align: middle; min-height: 50px; height: 100%; overflow: auto } Thanks

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  • A correct way for JAVA age calculation? [closed]

    - by Jhonnytunes
    I have already a Java calculation of age method. I have a Person Class where I have the method and I need to ask the current time each time the method is called. All I could do is make age a static field of person class, so all person classes use the same time now. Im worring about the Calendar.get() creating Calendar objects every time method is called. Am I doing it wrong? Can I make it better? public short getAge(){ now = Calendar.getInstance(); return (short) ( (now.getTimeInMillis() - birthDate.getTimeInMillis())/ 31536000000L); }

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  • Re-sizing the form without scaling the GUI

    - by Bmoore
    I am writing a turn based strategy game in C#. My GUI implementation consists of class that extends Form containing a class that extends Panel. When I render the GUI I draw to the paint method in the panel. I am trying to figure out what is the best way for handling form re-size events. I know I want a minimum window size, but I would prefer to not have a maximum or a set size. Ideally the GUI would reveal more/less of the map as the user changes the window size. I would like to avoid scaling the graphics if at all possible. What is the best way to handle re-size events?

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  • IP address and SEO

    - by Joel
    Hello, I currently host 5 websites within a dedicated server I own. I have several questions: Does it matter if I host all my sites on 100.100.100.100 (the server's IP for example) or if I split them into 100.100.100.100, 100.100.100.101 ... 100.100.100.104 (that is, each site on its own IP). Does it matter if I use a C-Class for each website? Do search engines really care if your site has its own c-class? Do search engines penalize a website if it moves its IP? Thanks, Joel

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  • Variable number of GUI Buttons

    - by Wakaka
    I have a generic HTML5 Canvas GUI Button class and a Scene class. The Scene class has a method called createButton(), which will create a new Button with onclick parameter and store it in a list of buttons. I call createButton() for all UI buttons when initializing the Scene. Because buttons can appear and disappear very often during rendering, Scene would first deactivate all buttons (temporarily remove their onclick, onmouseover etc property) before each render frame. During rendering, the renderer would then activate the required buttons for that frame. The problem is that part of the UI requires a variable number of buttons, and their onclick, onmouseover etc properties change frequently. An example is a buffs system. The UI will list all buffs as square sprites for the current unit selected, and mousing over each square will bring up a tooltip with some information on the buff. But the number of buffs is variable thus I won't know how many buttons to create at the start. What's the best way to solve this problem? P.S. My game is in Javascript, and I know I can use HTML buttons, but would like to make my game purely Canvas-based. Create buttons on-the-fly during rendering. Thus I will only have buttons when I require them. After the render frame these buttons would be useless and removed. Create a fixed set of buttons that I'm going to assume the number of buffs per unit won't exceed. During each render frame activate the buttons accordingly and set their onmouseover property. Assign a button to each Buff instance. This sounds wrong as the buff button is a part of the GUI which can only have one unit selected. Assigning a button to every single Buff in the game seems to be overkill. Also, I would need to change the button's position every render frame since its order in the unit's list of buffs matter. Any other solutions? I'm actually quite for idea (1) but am worried about the memory/time issues of creating a new Button() object every render frame. But this is in Javascript where object creation is oh-so-common ({} mainly) due to automatic garbage collection. What is your take on this? Thanks!

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