Top Rated Scripts | Java | Tutorials & Tips

One of the most important features of the Java language is support for multithreaded (also called concurrent) programming. This tutorial introduces you to the proper use of multiple threads in a Java program, using sample programs to illustrate these concepts. Before taking this course, you should have a general knowledge of Java programming; the context and level of knowledge used in this tutorial is the equivalent of an undergraduate operating systems course.

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.

This article describes what are application events and how you can use them. Focuses on two important web application events; Application startup and shutdown, Session creation and invalidation.

An article on what are EJBs, what they provide, what are their different types and when and why to use them.

Ant, from Jakarta project at the Apache Foundation, has become a de facto standard for building Java projects. You may already be using it to create automatic builds. It's easy enough to tailor those builds to your needs by customizing the build files; but what if you want to wait until run time to set certain properties? This article shows you how to extend Ant to produce builds that are interactive at run time; users can follow prompts to change parameters each time they conduct a build without having to deal with unfamiliar build files. You can incorporate this functionality into your builds to provide a smoother and more flexible experience for your end users.

Learn the pros and cons of generating native code from Java source. This article includes the basics of code compilation, including a brief overview of why many developers are employing Java native compilers for their applications.

This article shows you how to customize JSP tags to get even more out of JSP technology. Its detailed techniques explain how you can add more complex logic to your JSPs, take firmer control of data display, and share data among tags. All without having to teach your front-end Web developers how to write Java code.

Learn how JSP technology and LaTeX help online science education and research. JSP pages and custom tags can get LaTeX-formatted formulae onto the Web in a fashion that is easy for the author and doesn't require any special client-side software. Through increasingly efficient methods, you'll see how server-side Java technology can harness the power of disparate third-party tools to solve seemingly intractable problems.

Every Java programmer should be aware of the problem of code pages vs. Java Unicode. This article describes some pitfalls to avoid with code page and Unicode conversions and provides example fixes for the problems. Armed with this informaion, you should be able to create applications that are more truly platform and code page independent.

Examine the roots of the double-checked locking idiom, why it was developed, and why it doesn't work. The Java programming language contains several useful programming idioms. It also contains some that further study has shown should not be used. Double-checked locking is one such idiom that should never be used.

As J2EE has become the enterprise development platform of choice, more and more J2EE-based applications are going into production. One important component of the J2EE platform is the Enterprise JavaBeans (EJB) API. Together, J2EE and EJB technology offer many advantages, but with these advantages come new challenges. In particular, any problem in an enterprise system must be resolved quickly. In this article, Enterprise Java programming veteran Srikanth Shenoy reveals his best practices in EJB exception handling for faster problem resolution.

Love or hate it, static type checking can make code more robust. Programming languages are moving away from static type checking, but it is too powerful a debug resource to abandon. Static type checking can be one of the key weapons in a powerful arsenal against introducing and for detecting bugs. This article explains why we should be glad that the Java language supports it, and discusses how it can be made even better.

Add more versatility to your existing Java framework. The same framework supports file access, network access, character conversion, compression, encryption and so forth. This article presents a framework that lets an application efficiently read data from a source that only supports writing data to an output stream.

This article takes a new look at UPC symbols and bar codes, and describes how you can use Java to read information from a UPC bar code. The authors explain how to expedite and organize your enterprise operations that revolve around an IBM DB2 database. The sample application described in the article includes downloadable code.

This article aims at presenting how to create a servlet that sends a zip file to the user.

JSP technology is well-known, supported by most application servers, and endorsed by the J2EE Blueprints. Why would you choose otherwise? In this first of a two-part series, learn about the Tea template language and how Tea can be a viable alternative to JSP technology.

JMS 1.1 unifies point-to-point and publish/subscribe domains, allowing developers to create more general, reusable messaging code. 1.0.2 API provides little support for an application using both domains together, and no support for developing reusable frameworks that can work equally well with destinations of either domain. JMS 1.1 fixes this shortcoming by unifying these domains. This article explores how much easier it is to develop JMS client code using the latest version.

This article tells about the 2 architectures that we can use to build applications with Servlets and JSP.

In any JSP based web site, there could be lots of repetitive web pages. By using tag libraries and XML based definition files, this can be generalized into a framework based rendering. This article illustrates such usage to render a web site.

This article discusses incremental compaction, a new feature in the memory management component of IBM JDK 1.4.0. Incremental compaction is a way of spreading compaction work across different garbage collection cycles, thereby reducing pause times. The authors discuss the need for incremental compaction, the compaction phases at a high level, and some runtime parameters. They also explain how to interpret changes in the verbosegc output.