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  • Which language unifies OOP, both RPC call and Message passing a la Smalltalk, and more ...

    - by user310291
    I hate software editors who pretend to know better what you need and choose for you. Java and c# pretend multiple inheritance is dangerous. That I agree I often use Interface but in some cases I may need multiple inheritance : why not let me choose ? Also today you have to choose between RPC call à la Java and Message passing à la Objective C. Again can't I choose when one or the other is more practical ? So is there any language on earth which will free me from what I want to choose to use dependending on MY context and MY own judgement ?

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  • Stairway to Database Design STEP 2: Domains, Constraints and Defaults

    A clear understanding of SQL Data Types and domains is a fundamental requirement for the Database Developer, but it is not elementary. If you select the most appropriate data type, it can sidestep a variety of errors. Furthermore, if you then define the data domains as exactly as possible via constraints, you can catch a variety of those problems that would otherwise bedevil the work of the application programmer.

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  • Flash VS HTML 5 - A Web Design Agency's Dilemma

    The iPad was released on the Australian market last week to the usual Apple hype. People lining up outside the iconic Apple store to be the first get to play with the new toy. Regarded as a revolution in the way we browse the web, it has brought with it a new headache for all designers and developers of websites.

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  • Where to start when digging into an existing J2EE codebase?

    - by Jacob Krustchinsky
    I work for a company that produces enterprise applications to be used by schools and districts to manage all of their tests and standards data. Their existing application is written in J2EE and is very large. I personally am a seasoned PHP and Ruby = RoR developer and I have been asked to attempt to implement easily added but crucial features to an existing J2EE codebase. I am very familiar with Java SE and know the architecture of a web application well. What I am asking for is, will this suffice for the task ahead and what tips can you give me in digging into the code base and actually efficiently adding these new features? Is there anything important I need to know before beginning and what can I expect in terms of problems and issues coming from a Java SE, PHP, RoR background? Time isn't too much of an issue, I should have plenty of time to familiarize myself with J2EE.Please also note, syntax will not be a problem here.

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  • New Nokia SDK 2.0 for Java (beta)

    - by Tori Wieldt
    Nokia recently launched the Asha 305, 306, and 311, which are full touch devices with smartphone-like functionality at a low price. This makes them particularly attractive to consumers in the developing and developed world who may not be able to afford a smartphone but have a strong demand for apps and the smartphone experience. The Asha phones are the latest addition to Nokia's Series 40 platform, all of which support Java ME. The SDK includes new Full Touch API's (e.g. supporting pinch zoom) and Sensor support delivering an enhanced App experience. It also adds improved Maps API support for creating socio-local apps. There are a number of improvements in the tools including the Nokia IDE for Java ME with in-build Device-SDK Manager. Many code examples, training videos, webinars and sample code will help get you started. Porting guides and sample code show you how to port your android app to Java ME. If you don't have access to the hardware you can use Remote Device Access to test on real hardware that's remotely hosted for free. You can also find Light Weight UI Toolkit (LWUIT) support, which can speed development significantly. Both In-App Advertising and In-App Purchase (beta) is supported. Here's a great revenue-making opportunity for developers and a great way of reaching a new app-hungry mass-market audience. Download the new Nokia SDK 2.0 for Java (Beta) and get developing! 

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  • Interface hierarchy design for separate domains

    - by jerzi
    There are businesses and people. People could be liked and businesses could be commented on: class Like class Comment class Person implements iLikeTarget class Business implements iCommentTarget Likes and comments are performed by a user(person) so they are authored: class Like implements iAuthored class Comment implements iAuthored People's like could also be used in their history: class history class Like implements iAuthored, iHistoryTarget Now, a smart developer comes and says each history is attached to a user so history should be authored: interface iHistoryTarget extends iAuthored so it could be removed from class Like: class Person implements iLikeTarget class Business implements iCommentTarget class Like implements iHistoryTarget class Comment implements iAuthored class history interface iHistoryTarget extends iAuthored Here, another smart guy comes with a question: How could I capture the Authored fact in Like and Comment classes? He may knows nothing about history concept in the project. By scalling these kind of functionallities, interfaces may goes to their encapsulated types which cause more type strength, on the other hand explicitness suffered and also code end users will face much pain to process. So here is the question: Should I encapsulate those dependant types to their parent types (interface hierarchies) or not or explicitly repeat each type for every single level of my type system or ...?

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  • Inverted Cursor with ARM OpenJDK 7 in Chromium, and clicking issues?

    - by Espionage724
    So I have a strange issue. When using Chromium on the Nexus 7 port of Ubuntu, Java apps in the browser have the cursor flipped, literally (not just inverted movement, but the cursor itself flipped too). Also, clicking in java apps, both in the web browser and standalone, clicks don't register when using a USB mouse. I have to tap the screen itself to click. And another issue with the mouse; it seems Minecraft is unable to run, and freezes with an error similar to being unable to "GetInput", possibly related to the clicking issue above.

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  • Design Better, Rich Internet Applications

    As you know, Rich Internet Applications are web-based software programs that behave and operate like a desktop application. These may be delivered through a site-specific browser, a browser plug-in, or through other methods; they are especially useful for massively-multiplayer online role-playing games (MMORPGs). RIA training can be especially useful in learning the tools that are used for designing and developing these increasingly-necessary additions to Internet Web Sites.

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  • How to charge for software design [on hold]

    - by cja
    I have a prospect with both an idea and an existing customer of theirs who want to pay for this idea to be implemented. The customer want to pay only when the implementation is complete. My prospect has separate investors that will fund the implementation. The prospect wants to know how much I will charge for the implementation so that he knows how much to ask the investors for. Before I can estimate reliably I need to work with the prospect to develop an implementation plan. This planning work will take time that I want to charge for. The prospect doesn't have enough money to pay me until the investment. I want to make sure I am paid for the planning. How can I resolve this?

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  • Thriving With Web Design and Development

    Web Designers and Developers seem to compete for projects, so it seems only natural to find the source of business from the start and hopefully bid and win the job over "the other guy". Other industry specialists such as Domain Investors and other Web Developers already have the projects and established capital, marketing plan, and usually a concept for their project or campaign and you better believe they need your assistance.

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  • Costs to Design and Manage a Website

    The problem with most "link building" services it that they spam you content across the internet. Also most if not all of the links/ pages are not indexed. If the pages are not indexed or re-indexed then the search engine i.e. Google does not know that the link is there.

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  • Parallel Threading in Multi-Language Software?

    - by Smarty Twiti
    I'm developing a software that contain many modules/Daemon running in parallel manner, what i'm looking for is how to implement that, i cannot use Thread because some of those modules/Daemon are perhaps implemented in other languages (C,java,C#...). For example I'm using C for Hooking Messages exchanged between Windows kernel and top level applications, Java/C# to use some free library to simply parse XML(for example) or to accept and execute commands over the network..this can be done by C Language but just to improve productivity... Finally for GUI I'm using Ultimate++ (c++) that is like the main process that call and monitor(activate/deactivate/get state) of all other modules/Daemon through an interface. I admit that the development of each module/Daemon in a separate language greatly facilitates maintenance, but especially I am obliged to do that.. What is the best practice way to do that ? All helps will be appreciated.

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  • System.getProperty("user.dir") cannot get my project root path ,but the path which my eclipse is located

    - by facebook-100005613813158
    As the title goes , I have class named GetException.java,inside it ,I read a xml file in a static code block like(Because this document is shared): static{ ... document = db.parse(new File(System.getProperty("user.dir")+"/src/exception/ExceptionCode.xml")); ... } To test if the file path is correct, I write a main function just inside GetException.java, it proves that the path is correct ,xml file can be read successfully. My project root dir is "/home/wuchang/workspace/MongodbI". But When this Class is loaded from other class,such as I called one of its static functions , it reports the error message: /home/mrs/??/eclipse/src/exception/ExceptionCode.xml (No such file or directory) /home/mrs/??/eclipse/ is actually my eclipse installation directory.So , I wander how System.getProperty("user.dir") returned the eclipse installation directory to me ,instead of my project root directory?

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  • My Future as a Developer

    - by jmquigley
    You have been a developer for 16 years, mostly in the unix environment woring with C, C++ and Java. You are proficient in those skills, but can always improve. The jobs for C and C++ developers working in the Unix environment are not as plentiful as they used to be, so you're looking to expand your skills. If you were going to focus on an area of technology for the next 10 years, and you had a choice of C# or to continue with your work in Java and expand those skills, which would you choose and why? I love being a programmer. I want to focus on an area that would put me in demand so that I can continue to be a programmer. This is not meant to be subjective, I'm looking for guidance and advice from other professionals. This is a question that is at the front of my mind right now. TIA.

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  • Java : fusion approuvée des éditions SE/EE/ME, la gouvernance du langage remaniée, vers plus d'équité ?

    Java : fusion approuvée des comités exécutifs des éditions SE/EE/ME La gouvernance du langage remaniée, vers plus d'équité ? [IMG]http://adiguba.developpez.com/blog/javacup.png[/IMG] Avec quatorze votes favorables et une abstention de Google du comité exécutif (EC) de Java SE/EE, seize Oui et deux abstentions de RIM et AT&T du comité de Java ME, la fusion des comités exécutifs de Java SE (Standard Edition), Java EE (Entreprise Edition) et Java ME (Micro Edition) vient d'être approuvé. Le JCP (Java Community Process) Document passe ainsi à la version 2.9. Le comité exécutif est un groupe de membres qui guide l'évolution de la technologie Java au sein du JCP. Il...

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