A burst of innovation in the open source world over the last few years has led to an increase in Java developer productivity. A promising new entry on the scene is Apache CouchDB, hailed by some as the database for Web 2.0. This Java development 2.0 column introduces CouchDB and shows you how Groovy's RESTClient can help you tap into its strengths.

Forms4j is a replacement to using Spring form tags. Create complex forms quickly and easily -- with comprehensive validation and sections that hide/show depending on the input.

Here's some help to port your applications from Windows, Solaris, and OS/2 to run natively on Linux on x86-based systems. The information here also covers porting from Windows to Java and porting and migrating x86-based Linux apps to Linux on multiple other hardware platforms.

The IBM Monitoring and Diagnostic Tools for Java - the Health Center provides live information and recommendations about classes being loaded, the virtual machine environment, garbage collection, locking, and profiling. This article introduces you to the Health Center and shows an example of how it can be used to check the impact of a source code change in a Web application.

The Metro Web service stack provides a comprehensive solution for accessing and implementing Web services. It's based on the reference implementations of the JAXB 2.x and JAX-WS 2.x Java™ standards, with added components to support WS-* SOAP extension technologies and actual Web service deployment. This article looks at the basic principles of Metro client and server development.

As mobile platforms become increasingly sophisticated, the demand for mobile computing will increase. In this series, learn about the embedded Standard Widget Toolkit (eSWT). In Part 1: Use simple widgets to quickly build mobile apps. In Part 2: Use advanced controls for your mobile apps.

The IBM Developer Kit for Linux, Java 2 Technology Edition is a development kit and runtime environment that contains IBM's just-in-time compiler, enhanced with a unique Mixed Mode Interpreter and a re-engineered Java 2 virtual machine. This update includes enhancements to the JIT compiler, garbage collection technology, JVM serviceability, and an updated XML parser for Java.

Within the Java Platform, Enterprise Edition (Java EE) community, Spring is becoming a widely accepted framework. One new feature in the latest release of Spring is its Object/XML (O/X) mapping support. The API enables developers to convert Java objects into XML and vice versa. In this article, learn to use the Object/XML mapping in Spring and explore its advantages.

As the JPA Expert Group (JSR-317) nears completion of the JPA 2.0 specification, this article introduces you to some of the new concepts and features in this updated specification. It also explains how you can experience this new functionality with the Apache OpenJPA project, an open-source, robust, high performance, scalable implementation of the JPA specification.

This article give you a hands-on introduction to developing for and deploying on the Amazon Elastic Compute Cloud (EC2). Learn how EC2 differs from Google App Engine, and leverage an Eclipse plug-in and the concise Groovy language to get a simple Web application up and running quickly on EC2.

See how you can combine major Web 2.0 facilities (like Dojo, Web remoting, Web messaging, JSON4J, and so on) to create a solution with a rich user experience, as well as how to integrate existing back-end services into the Ajax-style architecture.

This article tackles a topic that strikes fear into most server-side Java developers: Swing. As you'll learn, Groovy's SwingBuilder takes some of the sting out of this powerful yet complex GUI framework. Also see how a Twitter GUI written in Groovy might look like. Doesn't Gwitter (Groovy + Twitter) have a nice ring to it?

Much too much has happened with Linux in the last 10 years to do anything like a complete job of listing the important events and technological advances surrounding this operating system. But nevertheless here are 10 important Linux developments that have rocked the world of Linux. I'm sure you can add to this.

The Hadoop Database (HBase) is well suited for creating a semantic Web and for extracting existing or computed knowledge. Learn how to represent RDF/XML assertions in an HBase database for scientific articles, and discover how HBase and Bigtable are promoting a new approach to storing and processing data.

As mobile platforms become increasingly sophisticated, the demand for mobile computing will increase. Learn about the embedded Standard Widget Toolkit (eSWT). You can use eSWT to develop native-looking Java applications for a variety of mobile phones. This article explores how to use eSWT mobile controls. Code examples walk you through using five of the classes in the eSWT mobile extension.

In this Mastering Grails installment, Scott Davis shows you how to create your own Grails plug-in. Once you see how effortless it is to create a plug-in, you'll understand why more than 250 Grails plug-ins are available now, with new ones being added all the time.

Apache Axis2 supports a range of data-binding technologies, including the official Java standard, JAXB 2.x. Axis2 also supports the Java standard for Web service configuration, JAX-WS 2.x, as an alternative to its own custom configuration technique. This article demonstrates how you can use JAXB 2.x and JAX-WS 2.x with Axis2 and discusses some of the limitations of Axis2's current support for them.

Eclipse Galileo introduces several features that allow you to quickly navigate your Java technology projects. When combined with existing features, you can get around quickly even in the largest projects. Using the features in the Eclipse IDE allows you to focus your time and energy on implementing code and not getting tied up trying to find classes and methods.

Technorati is a blog cataloging service that enables users to search virtually the entire blogosphere for articles of interest. Like most entries in the Web 2.0 domain, Technorati provides an API to automate much of its functionality. Also like most entries in the Web 2.0 domain, that API is provided as a REST service. In this article, work with examples and learn to get the most out of the Technorati API.

HybridJava is a new programming language that is a symmetric cross between Java and HTML, rather than one another attempt to embed Java in HTML or HTML in Java. The suggested technology continues JSP approach which only advantage is exactly the above mentioned symmetry in using Java and HTML, but goes much further. In this sense HybridJava is a successor and thus a modern alternative to Java Server Pages. However JSP is just a template engine that does not in fact care about text between just two delimiters, but Java Server Pages technology capitalizes upon real compilation and thus upon a deep knowledge of the application structure. In HybridJava both Java and HTML operators are incorporated into a single formal grammar. Besides Java and HTML constituents the HybridJava syntax has a simple but powerful support for code factorization and reuse - widgets are defined in HybridJava language without any additional Java programming.  Unlike all known user-defined tags implementations HybridJava widgets may have more than one insertion points named in this case. Recursive usage of widgets is also supported. A unique feature of HybridJava widgets is their transparency for Java context when Java variables of a page are accessible in its widgets. Technology includes an extremely transparent framework that includes application, page and widget level data session-scope persistence. Compiler resolves the identifiers used in widgets and pages against Java definitions in Java blocks, definitions of widget attributes, in instances of widgets, page instance and application-level data. Components may send and receive signals. The compiler generates Java source codes, one Java class for each page. Execution of this code results in generation of the outgoing HTML. Pure Java implementation. FREE FOR NON-COMMERCIAL USE