Click here to close now.




















Welcome!

Linux Containers Authors: Carmen Gonzalez, Liz McMillan, Tim Hinds, Yeshim Deniz, Elizabeth White

Related Topics: Java IoT, Linux Containers

Java IoT: Article

Desktop Java: JDNC Released as Open Source Project

Desktop Java: JDNC Released as Open Source Project

  • Java Trends - Exclusive Interview with Amy Fowler

    In her extensive "Java Trends" interview with JDJ last month, Sun's Amy Fowler - technical lead of the Java Desktop Network Component (JDNC) project - said that the JDNC API "is targeted at Java developers who aren't necessarily Swing literate" and spoke of her "current fever to make rich Java clients easier to build."

    Now in her latest blog Fowler turns up the heat under the JDNC project, inviting developers to read up about it in her latest article, visit the project site, "and join in on making it happen."

    "After all,": Fowler adds, "who knows better than you [i.e., the developer] what would make your development life easier."

    The article she refers to, published at javadesktop.org, the java.net community for developers of apps with rich client interfaces, confirms that  JDNC has been released as an open source project.

    Fowler explains:

    "This enables us to make the technology available to you early enough so that you can directly shape the vision, the feature set, and even the code. There is still a lot of work to do — the JDNC feature set is far from complete and there remain rough edges, especially in the API, which has not had extensive usage outside of unit testing and markup-driven use-cases. But, that is exactly why we need your involvement."

    "Work with us as we make the technology marry better with tools." she continues, "File bugs and requests for enhancements. Submit code changes. Submit new components. We are anxious to engage directly with you to make Java desktop client development as productive and satisfying as we all know it can be."

    In her article, Fowler writes explains that the need for JDNC was inspired by the realization that, although applications rarely fit neatly into a cookie-cutter mold, many of the apps which enterprise developers need to build do share a common cross-section of functionality.

    "In developing JDNC," she writes,  "we are creating shortcuts for these common features so that developers can get applications up very quickly and then easily enhance them over time. Central to these "shortcuts" is a suite of very high level user-interface (UI) components which leverage Swing, but provide common functionality in a simpler JavaBeans component API."

    "Although these components are indeed the project's namesake, they are only part of the solution," Fowler adds.

    "The most central feature shared by what we call "data-centric, enterprise desktop clients" is connecting users with data — loading it, viewing it, filtering it, editing it, validating it, saving it, and so on. And these days that data is usually tied to a network data source, such as an SQL database, HTTP servlet, or WebService, bringing with it the complexity of networking. JDNC does the heavy lifting here, by providing built-in support for dealing with these network data sources, including multithreaded support (so the UI doesn't block during network operations) and incremental loading — hence, the "Network" in "JDesktop Network Components".

    The application model for a data-centric enterprise client boils down to the life cycle of its data. JDNC promotes this notion by supporting the pattern of clearly separating the data from the UI, but making it very easy to bind the two together. Application data is encapsulated in one or more client-side, UI-independent data models, such as a JDBC RowSet or a JavaBeans component. The data-model interface should be easy to understand and easily configurable from tools, with simple properties to configure its data source, metadata, edit constraints, validation logic, etc., and simple actions for common operations such as load, insert, modify, cache locally (for off-line use), and update (back to server). The UI components are then bound to that local data model (or models) with a simple syntax. From a tool the binding might be created by drawing a line between graphical representations of the two objects. The connection between the UI and the local data model is handled by JDNC's binding mechanism, which automatically handles input validation, type conversion, pushing and pulling values to/from the model, and reporting errors to the user. This frees the developer to focus on their data and how it should be presented in the UI, rather than on the plumbing which glues the two together."

    As JDNC is a work in progress, Fowler concedes that those involved have not yet implemented all the functionality required to realize this vision.

    For example, she notes that support for disconnected RowSets (JSR 114) will be included in the release following 0.5.

    "However, 0.5 does include an experimental version of a data-binding framework for Swing components which, being central to our purpose, should evolve substantially over the course of the project."
    Anyone interested can view JDNC's Feature Summary for detailed information about current and planned features, Fowler adds. 

  • More Stories By Java News Desk

    JDJ News Desk monitors the world of Java to present IT professionals with updates on technology advances, business trends, new products and standards in the Java and i-technology space.

    Comments (3) View Comments

    Share your thoughts on this story.

    Add your comment
    You must be signed in to add a comment. Sign-in | Register

    In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


    Most Recent Comments
    Will 07/06/04 01:56:27 AM EDT

    Interested in a better alternative to JDNC?
    - more mature
    - more features
    - production stable

    Take a look at JForm!
    http://jform.coderight.nl

    Will

    Greg Leisner 06/25/04 08:42:40 AM EDT

    I'm reworking a legacy Java app that uses a very hacked-up version of SUN's original JTreeTable. Replacing those classes is on my todo list. I'm looking forward to adding this library to the app and cleaning it up alot!

    Since the modified class has been in use for 5 years, I hope to be able to provide useful feedback.

    Thanks to all who worked on this.

    Gerald Bauer 06/24/04 11:31:45 PM EDT

    Just to let you know I've started a JDNC mailinglist over at Yahoo! Groups. If anyone is interested in JDNC I invite you to join the discussion and ask questions or share tips and tricks about Sun's new Java Desktop Network Components initiative.

    Find out more @ http://groups.yahoo.com/group/jdnc

    - Gerald

    @ThingsExpo Stories
    All major researchers estimate there will be tens of billions devices - computers, smartphones, tablets, and sensors - connected to the Internet by 2020. This number will continue to grow at a rapid pace for the next several decades. With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo, November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be.
    Containers are not new, but renewed commitments to performance, flexibility, and agility have propelled them to the top of the agenda today. By working without the need for virtualization and its overhead, containers are seen as the perfect way to deploy apps and services across multiple clouds. Containers can handle anything from file types to operating systems and services, including microservices. What are microservices? Unlike what the name implies, microservices are not necessarily small, but are focused on specific tasks. The ability for developers to deploy multiple containers – thous...
    Too often with compelling new technologies market participants become overly enamored with that attractiveness of the technology and neglect underlying business drivers. This tendency, what some call the “newest shiny object syndrome,” is understandable given that virtually all of us are heavily engaged in technology. But it is also mistaken. Without concrete business cases driving its deployment, IoT, like many other technologies before it, will fade into obscurity.
    The 3rd International WebRTC Summit, to be held Nov. 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA, announces that its Call for Papers is now open. Topics include all aspects of improving IT delivery by eliminating waste through automated business models leveraging cloud technologies. WebRTC Summit is co-located with 15th International Cloud Expo, 6th International Big Data Expo, 3rd International DevOps Summit and 2nd Internet of @ThingsExpo. WebRTC (Web-based Real-Time Communication) is an open source project supported by Google, Mozilla and Opera that aims to enable bro...
    As more and more data is generated from a variety of connected devices, the need to get insights from this data and predict future behavior and trends is increasingly essential for businesses. Real-time stream processing is needed in a variety of different industries such as Manufacturing, Oil and Gas, Automobile, Finance, Online Retail, Smart Grids, and Healthcare. Azure Stream Analytics is a fully managed distributed stream computation service that provides low latency, scalable processing of streaming data in the cloud with an enterprise grade SLA. It features built-in integration with Azur...
    SYS-CON Events announced today that HPM Networks will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. For 20 years, HPM Networks has been integrating technology solutions that solve complex business challenges. HPM Networks has designed solutions for both SMB and enterprise customers throughout the San Francisco Bay Area.
    With the proliferation of connected devices underpinning new Internet of Things systems, Brandon Schulz, Director of Luxoft IoT – Retail, will be looking at the transformation of the retail customer experience in brick and mortar stores in his session at @ThingsExpo. Questions he will address include: Will beacons drop to the wayside like QR codes, or be a proximity-based profit driver? How will the customer experience change in stores of all types when everything can be instrumented and analyzed? As an area of investment, how might a retail company move towards an innovation methodolo...
    SYS-CON Events announced today the Containers & Microservices Bootcamp, being held November 3-4, 2015, in conjunction with 17th Cloud Expo, @ThingsExpo, and @DevOpsSummit at the Santa Clara Convention Center in Santa Clara, CA. This is your chance to get started with the latest technology in the industry. Combined with real-world scenarios and use cases, the Containers and Microservices Bootcamp, led by Janakiram MSV, a Microsoft Regional Director, will include presentations as well as hands-on demos and comprehensive walkthroughs.
    Contrary to mainstream media attention, the multiple possibilities of how consumer IoT will transform our everyday lives aren’t the only angle of this headline-gaining trend. There’s a huge opportunity for “industrial IoT” and “Smart Cities” to impact the world in the same capacity – especially during critical situations. For example, a community water dam that needs to release water can leverage embedded critical communications logic to alert the appropriate individuals, on the right device, as soon as they are needed to take action.
    WebRTC services have already permeated corporate communications in the form of videoconferencing solutions. However, WebRTC has the potential of going beyond and catalyzing a new class of services providing more than calls with capabilities such as mass-scale real-time media broadcasting, enriched and augmented video, person-to-machine and machine-to-machine communications. In his session at @ThingsExpo, Luis Lopez, CEO of Kurento, will introduce the technologies required for implementing these ideas and some early experiments performed in the Kurento open source software community in areas ...
    SYS-CON Events announced today that Pythian, a global IT services company specializing in helping companies leverage disruptive technologies to optimize revenue-generating systems, has been named “Bronze Sponsor” of SYS-CON's 17th Cloud Expo, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Founded in 1997, Pythian is a global IT services company that helps companies compete by adopting disruptive technologies such as cloud, Big Data, advanced analytics, and DevOps to advance innovation and increase agility. Specializing in designing, imple...
    Consumer IoT applications provide data about the user that just doesn’t exist in traditional PC or mobile web applications. This rich data, or “context,” enables the highly personalized consumer experiences that characterize many consumer IoT apps. This same data is also providing brands with unprecedented insight into how their connected products are being used, while, at the same time, powering highly targeted engagement and marketing opportunities. In his session at @ThingsExpo, Nathan Treloar, President and COO of Bebaio, will explore examples of brands transforming their businesses by t...
    In his session at @ThingsExpo, Lee Williams, a producer of the first smartphones and tablets, will talk about how he is now applying his experience in mobile technology to the design and development of the next generation of Environmental and Sustainability Services at ETwater. He will explain how M2M controllers work through wirelessly connected remote controls; and specifically delve into a retrofit option that reverse-engineers control codes of existing conventional controller systems so they don't have to be replaced and are instantly converted to become smart, connected devices.
    With the Apple Watch making its way onto wrists all over the world, it’s only a matter of time before it becomes a staple in the workplace. In fact, Forrester reported that 68 percent of technology and business decision-makers characterize wearables as a top priority for 2015. Recognizing their business value early on, FinancialForce.com was the first to bring ERP to wearables, helping streamline communication across front and back office functions. In his session at @ThingsExpo, Kevin Roberts, GM of Platform at FinancialForce.com, will discuss the value of business applications on wearable ...
    SYS-CON Events announced today that Micron Technology, Inc., a global leader in advanced semiconductor systems, will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Micron’s broad portfolio of high-performance memory technologies – including DRAM, NAND and NOR Flash – is the basis for solid state drives, modules, multichip packages and other system solutions. Backed by more than 35 years of technology leadership, Micron's memory solutions enable the world's most innovative computing, consumer,...
    17th Cloud Expo, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy. Meanwhile, 94% of enterprises are using some form of XaaS – software, platform, and infrastructure as a service.
    As more intelligent IoT applications shift into gear, they’re merging into the ever-increasing traffic flow of the Internet. It won’t be long before we experience bottlenecks, as IoT traffic peaks during rush hours. Organizations that are unprepared will find themselves by the side of the road unable to cross back into the fast lane. As billions of new devices begin to communicate and exchange data – will your infrastructure be scalable enough to handle this new interconnected world?
    While many app developers are comfortable building apps for the smartphone, there is a whole new world out there. In his session at @ThingsExpo, Narayan Sainaney, Co-founder and CTO of Mojio, will discuss how the business case for connected car apps is growing and, with open platform companies having already done the heavy lifting, there really is no barrier to entry.
    SYS-CON Events announced today that the "Second Containers & Microservices Expo" will take place November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Containers and microservices have become topics of intense interest throughout the cloud developer and enterprise IT communities.
    Manufacturing connected IoT versions of traditional products requires more than multiple deep technology skills. It also requires a shift in mindset, to realize that connected, sensor-enabled “things” act more like services than what we usually think of as products. In his session at @ThingsExpo, David Friedman, CEO and co-founder of Ayla Networks, will discuss how when sensors start generating detailed real-world data about products and how they’re being used, smart manufacturers can use the data to create additional revenue streams, such as improved warranties or premium features. Or slash...