Top Rated Scripts | Java | Tutorials & Tips
Java Servlets: An Alternative To CGI Scripts
posted byrfrantzinIntroduction to Servlets
This article describes advantages and disadvantages of Servlets vs CGI, How a Servlet works, and Where a Servlet can be used for.
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An Introduction to Java Servlets
posted byhansinIntroduction to Servlets
This article describes the overall servlet architecture and what you need to develop your application with servlets. Also presented are several code examples to show you how to use the Servlet API, and compare it with CGI and proprietary server APIs where appropriate.
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JavaBeans FAQ
A concise list of frequently asked questions regarding JavaBeans. Includes what JavaBeans are, what you need to use JavaBeans, the difference between Java applets and JavaBean components, Enterprise JavaBean component, and more.
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Writing Your First JSP
posted byduaneinIntroduction to Servlets
A brief introduction to writing your own first Java Server Pages (JSP). Covers several different editions of "Hello, World!" example. This article is the first excerpt of a full series from the book, Web Development with JavaServer Pages.
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Tag Conventions in JSP
posted byduaneinDevelopment
There are two primary types of tag conventions in Java Server Pages: Scripting-Oriented Tags and XML-Based Tags. Learning them gives you insight not only into JSP, but XML, too. This article is the second excerpt in a series from the book, "Web Development with JavaServer Pages."
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Build your own Java-based supercomputer
posted bykwigintinMiscellaneous
If you've ever wanted to build your own supercomputer but have been held back by the demands of parallel programming in C, Pseudo Remote Threads is for you. This prize-winning Java programming model greatly simplifies parallel programming on clusters, bringing supercomputing out of the laboratory and into the hands of everyday Java programmers. Article includes code snipets.
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Diagnosing Java Code: The Liar View bug pattern
posted bykwigintinMiscellaneous
GUIs are generally designed with a model-view-controller architecture in which the view is decoupled from the model. The separation presents a challenge to automated testing because it's difficult to verify that a state change in the model is reflected appropriately in the view -- it spawns the infamous "Liar View." This installment of Diagnosing Java Code examines the Liar View bug pattern.
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Faster apps on a better machine
posted bykwigintinMiscellaneous
If you want to build and run faster Java applications on the IBM Developer Kit for Linux, version 1.3, roll up your sleeves and prepare to get dirty. This article provides hands-on instruction for profiling, monitoring, and performance tuning not only your IBM Developer Kit, but your hardware capacity, the Linux 2.2.x kernel, and your Java applications.
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Introducing inheritance to PropertyResourceBundles
posted bykwigintinApplication Building
Creating a fully internationalized Java application using PropertyResourceBundles can present some interesting design and implementation problems, including concern over how to modularize the bundles to be used in different areas of the application. This article explores a solution based on PropertyResourceBundles, which should simplify the design and implementation problems, while promoting reuse of existing bundles. Article includes code snippets.
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Getting started with the FMA and Jiro
posted bykwigintinMiscellaneous
If you're looking for a unique programming challenge, try your hand at building a management application for a distributed, cross-platform network. This article is the first in a three-part series that looks at how Sun Microsystems's Jiro technology and the Distributed Management Task Force's Web-Based Enterprise Management Initiative (WBEM) can simplify the creation of management applications for heterogeneous environments.
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How to lock down your Java code
posted bykwigintinDevelopment
You inevitably spend some part of your week crunching code that you didn't write, and for which you may not have the source. This beginner's guide to opening up and locking down Java code walks you through the essentials of disassembling, decompiling, and obfuscating Java code, using examples from popular tools such as Mocha, HoseMocha, jmangle, and JODE.
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Improve the performance of your Java code
posted bykwigintinDevelopment
Many algorithms are expressed most concisely as tail-recursive methods. Compilers can automatically transform such methods into loops and thereby improve program performance, but this transformation is not required by the Java language specification, so not all JVMs will perform it. This means that tail-recursive methods in the Java language can result in unexpectedly large memory usage. This article demonstrates that dynamic compilation maintains the language's semantics while static compilation often doesn't. Learn why this matters and get a bit of code to help you determine whether your just-in-time (JIT) compiler can transform tail recursion on code while preserving semantics.
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Introduction to WBEM and the CIM
posted bykwigintinMiscellaneous
This is a continuation of the three-part series on building resource management applications. It takes a look at the Web-Based Enterprise Management (WBEM) initiative. WBEM serves to standardize the description and use of managed resources in enterprise networks. Follow along as the author describes the components that comprise WBEM, and practice using the technology with a simple filesystem example.
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Filtering tricks for your Tomcat
posted bykwigintinDevelopment
One of the most exciting features of the new Java Servlet 2.3 specification is filtering. At first sight, Servlet 2.3 filtering is deceptively similar to existing legacy filters in Apache, IIS, Netscape Web servers and others. In reality, Servlet 2.3 filtering is a completely different design architecturally -- leveraging the object-oriented nature of the Java platform to provide a new level of performance. This article introduces you to filtering in Tomcat 4 and shows you how to make productive use of filters in your projects.
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Forwarding and Including Response from other Servlets.
posted byfaisalinMiscellaneous
This article describes how to forward response from one Servlet to another and how to include response from the other Servlet. Discusses RequestDispatcher interface. Online demo available.
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User interface logic in use case modeling
posted bykwigintinMiscellaneous
This article leads you into the gray zone between modeling and method, with a look at requirements gathering via use case modeling. In particular, this article focuses on the relationship between user interfaces, system interfaces, and use case descriptions.
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Updating records in the Database using JDBC with Java Servlets
posted byfaisalinDatabase-Related
An article on updating records in the database using JDBC with Java Servlets. Every step from establishing a Connection to executing the UPDATE query is explained in detail. Online demo available.
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Diagnosing Java Code: The Impostor Type bug pattern
posted bykwigintinDevelopment
When special tags in fields are used to distinguish between types of objects, errors are possible in which a tag mislabels the associated data -- a bug pattern known as the Impostor Type. This article examines the symptoms and causes of this bug, defines ways to prevent this error from occurring, and discusses a tempting hybrid implementation that does not use impostor types but, in the end, turns out to have many of the same weaknesses. Article includes code snipets.
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Quick Java programming with FESI
posted bykwigintinMiscellaneous
In the real world of everyday computing (and development), there are many situations where "whipping up a Java program" to perform a task is either impractical or too time consuming. This article takes you into the underground world of FESI (Free EcmaScript Interpreter), where deploying the Java language in a quick-and-dirty fashion is the norm rather than the exception. Article includes code snipets.
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Building management applications with Jiro and WBEM
posted bykwigintinMiscellaneous
This article shows you how to combine and leverage the best parts of Jiro technology and the Web-Based Enterprise Management (WBEM) initiative. Using familiar examples from the previous two articles of this column, this article introduces the WBEM client technologies for accessing and manipulating data in a CIMOM. It then shows you how to access the same data more elegantly and efficiently, by rearchitecting the Jiro management facade to act as the interface to the CIMOM. Finally, he talks about the need for greater standardization of Jiro management facades and discusses the future of management application programming under a combined Jiro and WBEM development platform.
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