JSP Page: A special kind of Web page that may contain server-side scripts.The Servlet receives and responds to requests from Web clients, made via HTTP or SHTTP. Servlet: A small Java program that runs within a Web server.EJB Session Beans: Special classes that manage specific business transactions and processes.Part of the the Enterprise Information System (EIS) tier, the data store may in fact include enterprise infrastructure systems such as enterprise resource planning (ERP), mainframe transaction processing, database systems, and other legacy information systems. Persistence Unit and Models: A data store and classes that represent each data entity.Components of a Java EE Applicationīefore you fire up Eclipse, let’s get a bird’s eye view of the components that make up a Java EE application, since we’ll have to put each of these in place to get our project off the ground.Ī Java EE application, going from the “back” to “front” end, consist of the four following parts: Dialog boxes and menus might look slightly different but the code should be exactly the same. The tutorial was written using Eclipse Luna but it should work with other Eclipse versions as well. Note that ObjectDB 2.3.7_04 or later is required if Glassfish 3.1.2 (or later) is used. ObjectDB is an easy to use pure Java Object Database. In other words, industrial-strength apps! What You’ll Needįor this tutorial you will need the following software: (If you haven’t, you may want to learn the basics of the language before trying to follow this tutorial because Enterprise Java is an advanced topic.) Built on top of the Java SE platform, Java EE provides an API and runtime environment for developing and running large-scale, multi-tiered, scalable, reliable, and secure network applications. If you’ve ever used Java before, I would be willing to bet that it was the SE version. Java SEĪ lot of developers don’t realize that Java comes in several different flavors, including: In today’s article we’ll discover what makes an Enterprise Application and learn how to create a Java EE application project and configure a Glassfish server in the ever-versatile Eclipse IDE. It’s more lightweight that Spring and adheres more closely to the convention over configuration principle, whereby the number of decisions that developers need to make is decreased in order to gain simplicity. Now, Oracle, the makers of Java, have fought back with the EJB 3.1 spec. Spring depends a lot on XML files which can quickly become very large and unwieldy. Of course it wasn’t a perfect solution either. For a while, you’d be hard pressed to find anyone developing Enterprise level applications without it. I remember learning it in School and the instructor practically pulled his hair out trying to get it to work! Soon after, the Spring Framework was introduced to ease our pain. Not long after Java first released Java Beans, rumblings began about how darn complicated it was to implement. Create a Java EE Web Application using the Glassfish Server
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