Introduction
Java Platform, Enterprise Edition (Java EE) is an architecture developed by Sun Microsystems that is used to build distributed and large-scale web applications. It is built on top of the Java Platform, Standard Edition (Java SE), a collection of technologies that provide the necessary foundation for building enterprise applications. Java EE is used to enable application development with the help of consistent Java-based APIs, open-source technologies, modules, and tools. It also offers special capabilities for people who are developing enterprise-level applications, such as scalability, availability, and security.
Components
The components of Java EE include enterprise JavaBeans (EJBs), servlets, JavaServer Pages (JSPs), security, messaging services, web services, and other enterprise services such as JavaMail and database connectivity.
Servlets are programs that run on a web server and handle user requests, such as uploading files, processing data, and providing web page content. JSPs are HTML-based files that use scripting elements such as Java code to create dynamic web pages. They are used to build pages that can be used to display data from a database or other source.
EJBs are software components used to develop distributed applications in Java. They are similar to servlets and can be used to manage session information, access databases, and access other enterprise services.
Advantages
The primary benefit of using Java EE is that it allows developers to rapidly create enterprise-level applications. Since Java EE includes a number of components, developers don’t have to write code for many of the tasks required to build an enterprise application. Instead, they can simply use the existing components and tools provided by Java EE to quickly develop an application.
Additionally, Java EE benefits from the large number of open-source technologies and tools that are available to developers. For example, developers can use popular frameworks such as Spring and Hibernate to build applications faster.
Finally, Java EE also provides support for web services, which allows developers to build applications that can interact with other systems, such as web-based applications, without having to rewrite large chunks of code.
History
Java EE was first released in 1999, soon after the release of the Java 2 Platform, Standard Edition 1.2. Over the years it has evolved to become a powerful platform for enterprise application development. The current version is Java EE 8, which includes support for a number of new technologies, including Java Servlet 4.0.
Applications
Java EE is used to build enterprise applications, including web-based applications, mobile applications, and web services. Some of the most popular applications that use Java EE are Bank of America, Twitter, LinkedIn, eBay, and Amazon.
Conclusion
Java EE is a powerful architecture developed by Sun Microsystems and used to build distributed and large-scale web applications. It includes components such as enterprise JavaBeans, servlets, and JavaServer Pages, as well as web services and other enterprise services. Java EE offers developers the ability to quickly create enterprise-level applications and benefits from a large number of open-source technologies and tools. It also provides support for web services, allowing applications to interact with other systems. Java EE is used to build web-based applications, mobile applications, and web services, and is used by some of the most popular applications in the world.
