Online chat solutions have been very popular long before AJAX was born. There are numerous reasons for this popularity, and you’re probably familiar with them if you’ve ever used an Internet Relay Chat (IRC) client, or an Instant Messenger (IM) program, or a Java chat applet. AJAX has pushed online chat solutions forward by making it easy to implement features that are causing trouble or are harder to implement with other technologies. First of all, an AJAX chat application inherits all the typical AJAX benefits, such as integration with existing browser features, and (if written well) cross-platform compatibility.
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It isn’t correct to compare Java to PHP. Since PHP is a server-side scripting language whereas Java is a general-purpose language. In other words, PHP is only used as a server-side language where Java is both for server-side and desktop programming language. Moreover, Java is compiled and strongly-typed language. On other hand, PHP is a dynamic typed language. Hence, only for server-side programming, the comparison between Java and PHP makes sense.
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Threads play a major role in applications programming today. For example, most Web servers are threaded, as are many Java GUI programs. Here are the major settings in which using threads has been founded convenient and/or efficient:
• Programs with asynchronous events:
Here the program must be ready for various events, but does not know the order in which they might occur. For example, in Sections 3.1 and 3.2, we have a network server connected to several clients. The server does not know from which client the next message will arrive. So, we have the server create a separate thread for each client, with each thread handling only its client.
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Borland Delphi is known to be a great environment for the development of stand-alone and client-server applications on the Microsoft Windows platform. Its virtues range from full OOP support to visual development, in a unique combination of power and ease. However, the new frontier of development is now Internet programming. What has Delphi got to offer in this new context? Which are the features you can rely upon to build great Internet applications with Delphi? That’s what this paper intends to reveal. We’ll see that Delphi can be used:
• For direct socket and TCP/IP programming;
• In conjunction with third-party components that implement the most common Internet protocols, on the client or the server side;
• To produce HTML pages on the server side, with the WebBroker and Internet Express architectures;
• As well as to work with Microsoft’s core technologies, including MTS, COM, ASP, and ActiveX.
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In the late 1990’s many ERP companies caught the web browser wave, undertaking projects to leverage the Internet and browser technology and even to convert their software to “lite-client” or web “portal” architectures. Unfortunately for some, .NET came on the scene too soon after this major overhaul. When .NET appeared, some were too technically exhausted, or inflexible, or still basking in the glow of their new “Internet-based architectures” to recognize and embrace .NET. Other ERP software companies were and continue to be simply too busy struggling to stay solvent during the devastating one-two-three punch of Y2K, the recession of 2000, and 9/11. They lack the resources to consider the complete restructuring of their products that .NET warrants.
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In this paper we present experiences with the .NET Framework and Visual Studio.NET which we won in two big projects. Thereby we give hints for the practical use in .NET projects.
We designed and implemented two systems:
• A database maintenance system for the internet risk assessor “MIRA” for the Munich Re. Up to 10 developers were included and the project had a size of 8 man years.
• The core application of the real estate investment company Real I.S. of the Bayerische Landesbank Group. The system was build by a team of up to 14 developers in 20 man years.
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Information and communication technologies continue to pervade our lives in various aspects which include health, education, entertainment and ecommerce. People need to be able to trust computer systems as the dependence on them increases. The Trustworthy Computing vision (CRA, 2003) refers to computer systems that are intuitive, controllable, reliable and predictable and that ensure availability and security. Secure cod- ing is not trivial and poor code security management may leave the developed web application vulnerable to attack or turn the application into a launch pad for serious attacks.
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E-commerce, pay-per-use online services, user-authentication and tracking for e-learning, online gaming, contests… What do all of these applications have in common? The need for secure transfer of encrypted data between client workstations and server applications. According to a study by Gartner Consulting, the growing concern for Internet security parallels the evolution of e-business. In the earliest days of Internet development, the emphasis was on distributing content over the web and making it available to anyone. Now, as the Internet matures, clients are more concerned with ensuring that their assets, both monetary and intellectual, are protected from those who may commit fraud or abuse them. This is why more and more developers have been looking for security solutions.
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