JRuby combines the object-oriented strength of Smalltalk, the expressiveness of Perl, and the flexibility of the Java class libraries into a single, efficient rapid development framework for the Java platform. In this third installment in the alt.lang.jre series, Michael Squillace and Barry Feigenbaum introduce JRuby, a sophisticated addition to your Java development toolbox.

Neural nets may be the future of computing. A good way to understand them is with a puzzle that neural nets can be used to solve. Suppose that you are given 500 characters of code that you know to be C, C++, Java, or Python. Now, construct a program that identifies the code's language. One solution is to construct a neural net that learns to identify these languages. This article discusses the basic features of neural nets and approaches to constructing them so you can apply them in your own coding.

An antipattern can be defined as a bad design in the Java language. Antipatterns will bring forth bad answers in a way that is easy for some people to understand. If you are programming with Java, it is important to understand both antipatterns and patterns. When you work with software programs, they will need to be maintained.

Privacy monitoring technology in information technology systems is now necessary in order to ensure compliance with stated privacy policies, especially in the customer information management systems in enterprises such as Customer Relationship Management (CRM). Privacy policies allow organizations to control the use of personally identifiable information (PII) according to individual choices. The IBM Tivoli Privacy Manager (TPM) provides server support for creating, deploying, and administering privacy policies as well as for checking conformance to policies and for logging auditable data on data accesses. However, applications using TPM must use an agent that is able to intercept each access of PII and interact with a TPM server for auditing and enforcement. This is the function of a privacy monitor.

Application Tools for Extension Services consist of WebSphere® Studio-based tools that support the development of Web applications targeted for the Extension Services for WebSphere Everyplace (ESWE) platform. These tools are based on the existing WebSphere Studio J2EE development tools and they are part of an emerging suite of tools for the ESWE platform.

The Java 2 Platform, Micro Edition (J2ME) offers great tools for developers, porting the Java platform's network-centric and platform-agnostic worldview down to memory- and processor-limited devices. This article explains the basics of the J2ME world, showing you the building blocks of the platform and demonstrating a sample application.

JSR-109 facilitates the building of interoperable Web services in the Java 2 Platform, Enterprise Edition (J2EE) environment. It standardizes the deployment of Web services in a J2EE container. This article discusses the server and client programming models defined by JSR-109 and provides code examples.

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.

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.

Tutorial and sample codes to calculate the distance between two locations. Free sample source codes in PHP, ASP, ColdFusion, C/C++, C#, Java, Perl, Visual Basic and Javascript. Longitude and latitude for United States ZIP Code and Canadian Postal Code are available in database subscription.