Java Enterprise Edition 7 (Java EE 7) is one of the most expansive releases of the framework in its history and the very first version for which database giant Oracle is completely responsible. Moreover, Java engineers can now get their hands on the Java EE 7 Software Development Kit (SDK).
Originally, Oracle had said Java EE 7 was going to be “the best application server for the cloud,” complete with built-in support for platform-as-a-service (PaaS) environments and multitenancy. In addition, Oracle’s NetBeans IDE has been updated to version 7.3.1, bringing full support for Java EE 7 development and deployment to GlassFish 4.
What are the key features that have been incorporated into Java EE 7?
HTML5 - The main focus of Java Enterprise Edition 7 (Java EE 7) is on HTML5, with enhanced simplification, productivity, and support for the specification.
WebSocket - WebSocket is developed as part of HTML 5 specification… intended to allow for communication in an HTTP fashion over the Web, says Jonas Jacobi, CEO of Kaazing, which has specialized in WebSocket development. “The WebSocket protocol works by having everything on the wire functioning as a data or control frame,” according to Oracle’s Java technology evangelist Arun Gupta. “So an API or an SPI for data frames can be defined, enabling developers to manipulate the data frames.
Simplified JMS 2.0 API - A simplified JMS (Java Messaging Service) 2.0 API will provide for ease of development. The API offers the means for Java programs to create, send, receive, and read enterprise messaging system messages. Version 2.0, released in April, has been slotted as a simplified release. “The single biggest change in JMS 2.0 is the introduction of a new API for sending and receiving messages that reduces the amount of code a developer must write,” according to Oracle. “For applications that run in a Java EE application server, the new API also supports resource injection. This allows the application server to take care of the creation and management of JMS objects, simplifying the application even further.”
Updated Web Profile - Introduced in Java EE 6 and used for deploying Web applications, Web Profile has been updated in Java EE 7 and is now targeted toward “modern” application development, according to Oracle’s Gupta. If a Java engineer does not need JMS, for example, he or she can just use the Web Profile. “JSON and WebSocket are also part of Web Profile as part of Java EE 7,” Gupta says. JAX-RS 2.0 is featured in Web Profile, too.
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