When building a web site or web application that is driven by one of the many Java specifications like JSP, Servlets, JSF you will likely also be looking for a host that specializes in JSP Web Hosting. In your search you will find that Java hosting is somewhat specialized. However within this class you will find hosts that offer shared JVM's and others that offer private JVM's. So what is the difference other than price?

The best way to explain the difference between a private JVM and a shared JVM is to look at the differences of living in an apartment complex versus owning your own home. In the case of the apartment you are usually allowed (or disallowed) to do certain items by management, you wont be able to change where your walls are and if the guy downstairs starts a fire in his apartment you may want to get out of your place until the fire department arrives. With your own home you have the freedom to configure the inside how you want to. You won't have to fight other people for a good parking spot either.

Consider your own Java development environment now. When developing a Java application you usually try to work in an environment that you can control so that you get your best results. For instance, if you make changes and need to restart the JVM - you can. You can also develop any libraries and classes that you want. In your development environment you also have the capability to modify your configuration files for the JVM - how it interacts with the web server and define any special mappings that your java applications need to run or even install a different version of the JDK.

In addition, your development environment is not affected by the computer next to or across from you. It is its own instance of the application server and you are the administrator. In hosting, this is very much the same things that you get with a Private JVM. You get the control to configure your environment to your applications needs. Oftentimes if you use a shared JVM you find that the server administrator does not have the same urgency as you do when you need to restart the global instance.

Frequently it is heard that users applications run loose and end up crashing the application server. Another common complaint of shared JVM's is the fact that like crashing a JVM, other users have a higher chance of creating security issues - whether intentional or not - that will negatively impact any user running in the same instance. You are also likely to be restricted from deploying your own classes and libraries without a server administrator and once you do deploy these they are placed in the global instance available for anyone on the server to use.

In conclusion, if you are developing a custom Java application that uses frameworks such as Struts, Lenya, EJB, Tapestry, Shale or any other popular Java application frameworks you will likely want to invest in a host that will provide a private JVM environment that will be very similar to your own development environment. If you will be developing your application on your hosting account directly you will definitely want to have a private JVM. While a completely dedicated hosting solution may be best, if looking for a cost compromise, shared hosting with a private JVM may be the solution for you, with shared hosting plus a shared JVM generally not being worth the hassle.

Jason A. Taylor is the CTO at CWI Hosting and one of the pioneers of shared JSP web hosting with both Resin and Tomcat knowledge. You can find more information on Private JVM Web Hosting Here.

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Java is an object-oriented programming language developed by Sun Microsystems in the early 1990s. Java applications are designed to be compiled to by tecode, which is interpreted at runtime, unlike conventional programming languages, which either compile source code to native code or interpret source code.

The language itself borrows much syntax from C and C++ but has a simpler object model and fewer low-level facilities. JavaScript, a scripting language, shares a similar name and has similar syntax, but is not related to It is possible that some items may not make it into the release for one reason or another. Also, any API additions or other enhancements to the Java SE platform specification are subject to review and approval by the JSR 270 Expert Group. However, beyond these caveats, this list should contain the features that we are currently hoping to deliver in Java SE 6.

The desktop Java client group at Sun is working on some great features and functionality in the next release of the Java Platform, Standard Edition (Java SE, formerly known as J2SE). We thought it might be useful to detail some of the highlights here. Where possible, we will add pointers to additional information (such as bug IDs or other articles). We will also give information on the JDK 6 build into which each item is integrated as development proceeds.

It is imperative to know that the most important driver for Java Foundation Classes/Swing (JFC/Swing) technology is improving its platform look and feel -- specifically, making sure that the look and feel of JFC/Swing's Windows and GTK match the underlying platform's look and feel.

For more information on Java SE 6 technology's improved drag gesture recognition (the fix for 4521075), check out the entry "Improved Drag Gesture in Swing" in Shannon Hickey's blog. For more information on the major improvements to drop support, see his blog entry "First Class Drag and Drop Support."

In addition, where it makes sense, have Swing provide true double-buffering support. This will provide two immediate advantages: exposing a Java application (moving an application to the front that was previously obscured) will be nearly instantaneous, and an application that hangs the event dispatch thread can still have its contents restored during an expose event. For more information on this feature, check out Scott Violet's blog.

No matter what a user has selected for desktop text settings, because there was no way for Swing to request the same behaviors as the native platform. The GTK Look and Feel for Swing already uses text antialiasing if it is a desktop setting, but it cannot request LCD text antialiasing mode. This feature addresses this issue for the native look and feel, which will automatically detect and use the desktop settings.

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JAVA is an object oriented programming language and it was intended to serve as a new way to manage software complexity. Java refers to a number of computer software products and specifications from Sun Microsystems that together provide a system for developing application software and deploying it in a cross-platform environment. Java is used in a variety of computing platforms from embedded devices and mobile phones on the low end, to enterprise servers and supercomputers on the high end. Java is nearly everywhere in mobile phones, Web servers and enterprise applications, and while less common on desktop computers; Java applets are often used to provide improved functionality while browsing the World Wide Web.

Some advantages of JAVA:

• It is an open source, so users do not have to struggle with heavy license fees each year
• Platform independent
• Java API's can easily be accessed by developers
• It perform supports garbage collection, so memory management is automatic
• It always allocates objects on the stack
• It can embraced the concept of exception specifications
• Multi-platform support language and support for web-services
• Using JAVA we can develop dynamic web applications
• It allows you to create modular programs and reusable codes

Another advantage of JAVA is that, ones the program is written in java we can run it anywhere means that application developed through Java is platform independent. JAVA based enterprise applications perform well because stable JAVA standards help developers to create multilevel applications with a component based approach.

JAVA programming enables secure and high performance software development on multiple platforms. Many companies in India have well-qualified software engineers having expertise in Java, Java Script, J2SE, JSP, and J2ME, JAVA Programming Services help your businesses to do better. They provide variety of Java development services including project solutions.

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Before we start any discussion about Persistence technologies, we need to understand what exactly it is in computer science. In simple terms ability to retain data structures between various program executions. A perfect example of this would be a word processor saving undo history. In practice, this is achieved by storing the data in non- volatile storage such as a file system or a relational database or an object database.

The popularity of databases has increased manifold in the past few years. Java has become the preferred choice of developers for developing secure, flexible, and scalable database driven web applications. These web applications require objects to be associated with appropriate databases. Hibernate, along with other persistence technologies associates objects with the appropriate database in a simple, straight forward and natural way.

Hibernate is one such effort from the Java community to develop many object oriented solutions to data persist ency. Any kind of Java persistence solution includes two main elements i.e. ORM (Object Relational Mapping) and OOM(Object Oriented Modeling).

Hibernate has become immensely popular amongst the developer community as it is a free, powerful, high performance open source object - relational mapping persistence Java package that makes it easier to work with relational databases for Java Applications.

Apart from Hibernate, other popular open source Java technologies include JDBC, abates, JDO, Top Link and CMP Entity Beans. These technologies provide a standardized object-relational mapping mechanism.

Java based application programming Interface is the latest version of the Java Data Objects (JDO) technology which was the earlier persistent technology used by developers. JPA is the latest Java Specification standard for java enterprise applications. The Java API is a java programming language framework that allows developers to manage relational data in Java standard edition and Enterprise Edition applications. Java API originated as part of the work of the JSR 220 expert group.

The java API's has been developed after drawing upon the best ideas from other prevalent technologies like Top link, JDO, Hibernate etc. In simple words, Java Persistence API is a Plain Old Java Object API for object /relational mapping and supports a rich, SQL -like query language for both static and dynamic queries.

Vendors involved in application development have found that the use of Hibernate technology with Java persistence API's helps build flexible, database driven web applications that are highly scalable and involve complex business processes.

The Java Persistence API is the standard object/relational mapping and persistence management interface of the Java EE 5.0 platform and Java Web Services Development . As part of the EJB 3.0 specification effort, it is supported by all major vendors of the Java industry for improving Java Web Development in India and Globe.

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J2EE or the Java to Enterprise Edition platform developed by Sun Microsystems stipulates the criterion for developing multi-tier enterprise applications. The J2EE platform leverages the robustness of the Java programming language that allows developers to write the code only once and execute the application on any platform. Presently more than two-thirds of development managers use the J2EE platform to develop and deploy their applications.

Businesses all over the globe have realized that they can gain a sustainable advantage over their peers by developing custom applications for their unique business needs. Quick development and deployment are required whether in-house applications for raising employee efficiency are being created or rich internet applications to cater to the specialized needs of the clients are being developed. Another issue, which is of concern to enterprises, is the portability and scalability of their enterprise applications. An enterprise application is viable only when it is easily portable across platforms and devices. Scalability is also another parameter, which decides the long-term feasibility of an application. Enterprise applications must be scalable so that they can be scaled up to accommodate thousands of users simultaneously. J2EE based enterprise applications can be executed across platforms and are functional across devices.

J2EE based enterprise applications succeed because stable J2EE standards help developers create multilevel applications with a component based approach. Existing database management systems and legacy applications can be brought under one umbrella so that the critical requirements of the enterprise can be fulfilled. J2EE, in our opinion, has a very bright future and the recent addition of interoperable web services and other new services in version 1.4 will make it even more market-friendly.

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Various high quality programming languages are used in the Software Industry. Some of them are expensive, while some are affordable by nature, however all of these are vastly used according to the client's requirement.

Mainly three languages are used and they are PHP programing, ASP or VB dot Net programing and the Java Programing. This article doesn't aim at comparing these languages as they all are rich by their own way and used with great faith. This article aims at exploring the advantages of the language.

Java is a high-level object-oriented programming language, influenced in various ways by C, C++, and Smalltalk, with ideas borrowed from other languages as well and was originally developed by James Gosling at Sun Micro-systems and released in 1995 as a core component of Sun Micro-systems Java platform. It is proven that Java is a versatile programming language which is used in mobile phone applications on the down ends as well as on the upper end, Java is used in highly performing servers and in the super computers.

Despite many criticisms, Java is generally understood to be the most popular general-purpose computing language in use today. It is a widely used standard in enterprise programming, and in 2005, it replaced C++ as the language most used by projects on Source Forge.

Benefits of Java

1. Complex dynamic web applications are possible in Java programming.
2. Java is multiple threaded programming language so is used in high performance applications.
3. As Java applets are platform independent, it can easily be accessed by software developers.
4. Users do not keep the fear for heavy license fees as Java is an open source language.
5. EJB (Enterprise Java Beans) and RMI (Remote method Invocation) are the globally recognized Java architecture for distributed applications.
6. Automatic garbage collection is possible in Java applications.
7. As Java is a platform independent language, the codes which is written Java, can be run in different platforms.
8. Java is a highly secured, robust and portable programming language in nature.
9. In the database end, Java can use all kind of databases (free and paid) according to the client's requirements.
10. DAO, CORBA, Hibernate are widely recognized Java architectures which supports internationalization (i18n) for business enterprise applications.
11. Java has the set of well-designed, intuitive and multiple tasking APIs which help the Java programmers to do better coding without any hassle.

The computer world currently has many platforms. This has its pros and cons. On the one hand it gives more choices to people; on the other hand it becomes more and more difficult to produce software that runs on all platforms. With its Java Virtual Machine and API, the Java Platform provides an ideal solution to this. The Java Platform is designed for running highly interactive, dynamic, and secure applets and applications on networked computer systems.

Being interactive, dynamic and architecture-neutral, the Java Platform has benefits not only for the developer and support personnel, but also for the end user. For the end users, the platform provides live, interactive content on the World Wide Web, with just-in-time software access. Applications are readily available on all operating systems at once. Users do not have to choose operating systems based on the applications, they can run the applications on their favorite machines.

Developers can develop applications on one platform to deliver to that same platform -- the Java Platform, which is available on a wide variety of operating systems and hardware platforms. This much reduces the developing cost. For support personnel, version control and upgrades are much simplified because Java-enabled application can be kept in a central repository and served from there for each individual use.

Cristina Gomes has years of experience as a software developer and her knowledgeable articles on Java programming helps her audience to learn industry applications of Java programing.

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