Welcome!

Java IoT Authors: Zakia Bouachraoui, Pat Romanski, Elizabeth White, Liz McMillan, Yeshim Deniz

Related Topics: Java IoT, Machine Learning

Java IoT: Article

Developing Rich Internet Applications Using Swing

A solution based on OpenSwing & Spring frameworks

The Java development platform always provides limited support for application development based on a graphical user interface, an area where more traditional languages and integrated development environments (IDEs) such as Visual Basic or Delphi have based their success.

Today the Java SE distribution offers essentially the same features it offered in 1999 with regards to Java graphical components: the Swing toolkit. Swing provides graphical components like grids, trees, text fields, checkbox, radio button, combo-box and others. Anyway these components have changed little and not been improved in latest releases of Java. All in all Swing greatly lacks some key aspects:

Input fields are too simple. They can't be compared with the advanced graphical components available in other languages. They don't support common properties like text trim, padding, text length checking, uppercase; moreover there's no numeric field, currency field, date control or calendar control. There's no relationship between the input field and internationalization settings.

In addition, Swing components are just hard to use. For example, creating a powerful table with editing capabilities, colors, data formatting, column or row locking usually requires a lot of code, time, and skills. A more powerful and easier set of components is needed to develop rich GUIs, especially for beginner Swing programmers.
There's no binding mechanism between graphical components and the data model. This means that to set or get data from or to a data model based on POJOs (Plain Object Java Object, i.e., Java Beans) requires additional coding, not provided by the Swing toolkit.
There's no data retrieval layer between the presentation tier and business logic/data access layers that facilitates and normalizes data exchange with the presentation tier and other layers.

All these deficiencies don't encourage the development of enterprise applications with rich GUI content and based only on the Swing toolkit.

This gap in Java was partly covered in the past years, thanks to solutions supplied by the market in the shape of commercial and open source solutions, but without reaching any definition of a reference standard.

Commercial solutions should be discarded because they're proprietary, not directed by the market, and in plain disagreement with the "Java philosophy" of open source solutions or solutions supported and promoted by the market, led through mechanisms of sharing and the collective definition of standards such as JCP (the Java Community Process).

With regard to open source solutions, there are several Swing extensions, born to provide:

  • a suite of advanced graphics components
  • a binding layer between graphics controls and data model
  • a framework that defines guidelines to design an application and its components and use these components correctly
  • a data retrieval mechanism that (preferably) abstracts from the real location of the data (locally or remotely)
There are many free solutions available that meet some of these topics, such as JMatter, JGoodies, JDNC (Java Desktop Network Components) and its evolution, the Swing Application Framework, currently submitted for approval to JCP. There are other open source projects that fit specific issues, as those reported on the JavaDesktop portal.

However these solutions address some issues (like the availability of advanced graphics controls or data binding capability) but not all the issues that could arise in enterprise application development with rich GUI content and not always applicable on different architectures (both two- and three-tier applications, with data communications based on HTTP or SOAP or RMI or any other protocol).

A good solution should include the capacity to decouple GUI development from data retrieval issues: this could facilitate application development with several architectures, such as two-layered applications (desktop applications) and three-layered applications (Rich Internet Applications). This way the same suite of graphics components and data binding mechanisms could be reused in different application architectures.

Broadly, there's a need for a complete solution: a framework (i.e., a set of development guidelines) and a set of advanced Swing components with data binding capabilities and data retrieval mechanisms not limited to a specific architecture to develop applications having rich GUI contents quickly and easily.

RIA development would become one of the possible scenarios that issues from that solution.

A complete client-side solution should integrate all these aspects and ideally fit with existing server-side layers and frameworks: in the context of server-side development, especially in the context of Web application development, valid frameworks already exist such as Spring and effective ORM (Object to Relational Mapping) layers like Hibernate, iBatis, TopLink, JDO, and JPA; hence, it's unnecessary to develop other server-side frameworks. It's better to interconnect them with the complete client-side solution.

To realize this kind of client-side solution, it's possible to fit more client-side products together, such as some of those described above, but this attempt requires skills in many products and a lot of time and isn't a suitable choice for organizations with low skills levels and limited budgets.

The OpenSwing framework addresses these issues by providing a unique and uniform client-side solution: it provides a suite of advanced graphics components that are usually powerful enough that they don't have to be extended any further. They meet the development requirements of enterprise applications with rich GUI contents. The development process becomes easier and faster by developing a GUI through IDEs' graphical designers like other non-Java RAD environments.

At the same time, this framework provides other software layers that complement the OpenSwing graphics components suite by supporting data binding, POJO-based data modelling, and remote data access by allowing the development of RIAs (three-layered client/server applications) or desktop applications (two-layered client/server applications).

OpenSwing
OpenSwing is an open source framework that can be used to develop Java applications based on Swing's front-end.

It's possible to apply this framework to develop two-tier client/server applications with an underlying database or based on other data storage devices (like files on a file system) or three-tier applications with several combinations of technologies such as RIAs (where the client and server tiers communicate through the HTTP protocol) or distributed applications (where the client and server tiers communicate through RMI - see Figures 1, 2, and 3).

The framework includes a set of class libraries that can be used to:
• Create the application front-end through a collection of advanced graphics controls that include labels, text fields, multi-line text fields, numeric fields, currency fields, calendar, grid, trees, a tree combined with a grid, lookup, gantt diagram, buttons with images, combo-box, radio buttons, checkbox, wizard panel, image panel, splash screen, dialog windows, tip of the day frame, progress bar/panel/dialog, and a licence agreement panel.

Grid usage is especially sophisticated: it allows columns or rows locking, data pagination, columns filtering and sorting, and data exporting and the grid model is based on a list of POJOs like a tree component and a panel of graphics controls whose data model is based on a POJO.

So POJO support is extended to the entire set of graphical components that compose the GUI.

More Stories By Mauro Carniel

Mauro Carniel is a Software Architect at Sinesy. He has more than 10 years of enterprise software development experience utilizing JEE technologies, including JSP, JSF, Swing, EJB, JPA. He started focusing more on GUI-based client/server Java applications since 1998, then moved to web rich applications, including Sencha ExtJS and recently Mobile applications and Data Integration. He has a MSc in Information Technology from Udine University, Italy.

Comments (0)

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.


IoT & Smart Cities Stories
Moroccanoil®, the global leader in oil-infused beauty, is thrilled to announce the NEW Moroccanoil Color Depositing Masks, a collection of dual-benefit hair masks that deposit pure pigments while providing the treatment benefits of a deep conditioning mask. The collection consists of seven curated shades for commitment-free, beautifully-colored hair that looks and feels healthy.
The textured-hair category is inarguably the hottest in the haircare space today. This has been driven by the proliferation of founder brands started by curly and coily consumers and savvy consumers who increasingly want products specifically for their texture type. This trend is underscored by the latest insights from NaturallyCurly's 2018 TextureTrends report, released today. According to the 2018 TextureTrends Report, more than 80 percent of women with curly and coily hair say they purcha...
The textured-hair category is inarguably the hottest in the haircare space today. This has been driven by the proliferation of founder brands started by curly and coily consumers and savvy consumers who increasingly want products specifically for their texture type. This trend is underscored by the latest insights from NaturallyCurly's 2018 TextureTrends report, released today. According to the 2018 TextureTrends Report, more than 80 percent of women with curly and coily hair say they purcha...
We all love the many benefits of natural plant oils, used as a deap treatment before shampooing, at home or at the beach, but is there an all-in-one solution for everyday intensive nutrition and modern styling?I am passionate about the benefits of natural extracts with tried-and-tested results, which I have used to develop my own brand (lemon for its acid ph, wheat germ for its fortifying action…). I wanted a product which combined caring and styling effects, and which could be used after shampo...
The platform combines the strengths of Singtel's extensive, intelligent network capabilities with Microsoft's cloud expertise to create a unique solution that sets new standards for IoT applications," said Mr Diomedes Kastanis, Head of IoT at Singtel. "Our solution provides speed, transparency and flexibility, paving the way for a more pervasive use of IoT to accelerate enterprises' digitalisation efforts. AI-powered intelligent connectivity over Microsoft Azure will be the fastest connected pat...
There are many examples of disruption in consumer space – Uber disrupting the cab industry, Airbnb disrupting the hospitality industry and so on; but have you wondered who is disrupting support and operations? AISERA helps make businesses and customers successful by offering consumer-like user experience for support and operations. We have built the world’s first AI-driven IT / HR / Cloud / Customer Support and Operations solution.
Codete accelerates their clients growth through technological expertise and experience. Codite team works with organizations to meet the challenges that digitalization presents. Their clients include digital start-ups as well as established enterprises in the IT industry. To stay competitive in a highly innovative IT industry, strong R&D departments and bold spin-off initiatives is a must. Codete Data Science and Software Architects teams help corporate clients to stay up to date with the mod...
At CloudEXPO Silicon Valley, June 24-26, 2019, Digital Transformation (DX) is a major focus with expanded DevOpsSUMMIT and FinTechEXPO programs within the DXWorldEXPO agenda. Successful transformation requires a laser focus on being data-driven and on using all the tools available that enable transformation if they plan to survive over the long term. A total of 88% of Fortune 500 companies from a generation ago are now out of business. Only 12% still survive. Similar percentages are found throug...
Druva is the global leader in Cloud Data Protection and Management, delivering the industry's first data management-as-a-service solution that aggregates data from endpoints, servers and cloud applications and leverages the public cloud to offer a single pane of glass to enable data protection, governance and intelligence-dramatically increasing the availability and visibility of business critical information, while reducing the risk, cost and complexity of managing and protecting it. Druva's...
BMC has unmatched experience in IT management, supporting 92 of the Forbes Global 100, and earning recognition as an ITSM Gartner Magic Quadrant Leader for five years running. Our solutions offer speed, agility, and efficiency to tackle business challenges in the areas of service management, automation, operations, and the mainframe.