Screenshot  | |
| Original author(s) | Bull |
|---|---|
| Developer(s) | OW2 |
| Initial release | September 7, 1999 |
| Stable release | 5.3.0 [1] / October 4, 2013 |
| Repository | |
| Written in | Java |
| Operating system | Cross-platform |
| Type | Application server |
| License | LGPL 2.1 |
| Website | jonas |
JOnAS is an open-source implementation of the Java EE application server specification, developed and hosted by the OW2 consortium, having been originally been created by Groupe Bull. JOnAS is released under the LGPL 2.1 open-source license.
JOnAS 5.1 is Java EE 5 certified, as of March 17, 2009. It was the first open-source server certified for free, using a process known as "J2EE scholarship" and established by Sun for non-profit organizations[ citation needed ]. The new JOnAS 5 architecture is based on top of an OSGi framework which makes the development of dynamic components much easier than before[ citation needed ].
JOnAS 5.3 is Java EE 6 certified, but only for the web profile. [2]
JOnAS has a comparatively clear remote management console, providing easily accessible tools for remote uploading and deploying of the web applications[ citation needed ], configuring both secure and ordinary web access ports and managing the user name - password - role datasets. This console is based on the JavaScript[ citation needed ]. From the first impression, the consoles of the comparable open source Java EE servers seem more confusing, with many needed features not immediately visible[ citation needed ]. This is, however, more important in the teaching process, as Java EE servers are not meant to be managed by the unprepared end user[ citation needed ].
JOnAS is an open source Java EE 6 application server. It provides a fully compliant EJB container through EasyBeans and is available with an embedded Tomcat or Jetty web container. Any 1.6 JVM is supported, and the attempts to run on a free stack with GNU Classpath are very promising. JOnAS can run on numerous operating systems including Linux, Windows, AIX, many Posix platforms, and others, as long as a suitable JVM is available.
As of its version 5, JOnAS is fully based on the OSGi framework; using either Apache Felix, Eclipse Equinox or Knopflerfish (though the default JOnAS packaging comes with Apache Felix). This means that all JOnAS components are packaged as bundles, for example the full JOnAS profile comes with more than 250 bundles.
The service layer is implemented using Apache iPOJO, therefore most Java-EE-certified JOnAS services (persistence, EJB, resources, ...) are directly available as OSGi services to all OSGi bundles deployed on JOnAS. The inverse is also true: for example, an EJB3 can directly access any number of OSGi services using dynamic injection.
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The OSGi Alliance is an open standards organization for computer software founded in March 1999. They originally specified and continue to maintain the OSGi standard. The OSGi specification describes a modular system and a service platform for the Java programming language that implements a complete and dynamic component model, something that does not exist in standalone Java/VM environments.
Jakarta Enterprise Beans is one of several Java APIs for modular construction of enterprise software. EJB is a server-side software component that encapsulates business logic of an application. An EJB web container provides a runtime environment for web related software components, including computer security, Java servlet lifecycle management, transaction processing, and other web services. The EJB specification is a subset of the Java EE specification.
Jakarta EE, formerly Java Platform, Enterprise Edition and Java 2 Platform, Enterprise Edition (J2EE), is a set of specifications, extending Java SE with specifications for enterprise features such as distributed computing and web services. Jakarta EE applications are run on reference runtimes, that can be microservices or application servers, which handle transactions, security, scalability, concurrency and management of the components it is deploying.
An application server is a server that hosts applications.
A web container is the component of a web server that interacts with Jakarta Servlets. A web container is responsible for managing the lifecycle of servlets, mapping a URL to a particular servlet and ensuring that the URL requester has the correct access-rights. A web container handles requests to servlets, Jakarta Server Pages (JSP) files, and other types of files that include server-side code. The Web container creates servlet instances, loads and unloads servlets, creates and manages request and response objects, and performs other servlet-management tasks. A web container implements the web component contract of the Jakarta EE architecture. This architecture specifies a runtime environment for additional web components, including security, concurrency, lifecycle management, transaction, deployment, and other services.
Apache Tomcat is a free and open-source implementation of the Jakarta Servlet, Jakarta Expression Language, and WebSocket technologies. Tomcat provides a "pure Java" HTTP web server environment in which Java code can run.
NetBeans is an integrated development environment (IDE) for Java. NetBeans allows applications to be developed from a set of modular software components called modules. NetBeans runs on Windows, macOS, Linux and Solaris. In addition to Java development, it has extensions for other languages like PHP, C, C++, HTML5, and JavaScript. Applications based on NetBeans, including the NetBeans IDE, can be extended by third party developers.
Java Management Extensions (JMX) is a Java technology that supplies tools for managing and monitoring applications, system objects, devices and service-oriented networks. Those resources are represented by objects called MBeans. In the API, classes can be dynamically loaded and instantiated. Managing and monitoring applications can be designed and developed using the Java Dynamic Management Kit.
WebSphere Application Server (WAS) is a software product that performs the role of a web application server. More specifically, it is a software framework and middleware that hosts Java-based web applications. It is the flagship product within IBM's WebSphere software suite. It was initially created by Donald F. Ferguson, who later became CTO of Software for Dell. The first version was launched in 1998. This project was an offshoot from IBM HTTP Server team starting with Domino Go.
Apache Beehive is a discontinued Java Application Framework that was designed to simplify the development of Java EE-based applications. It makes use of various open-source projects at Apache such as XMLBeans. It leverages innovations in Java 5 which include JSR-175, which is a facility for annotating fields, methods and classes so that they can be treated in special ways by runtime tools. It builds on the framework developed for BEA Systems Weblogic Workshop for its 8.1 series. BEA later decided to donate the code to Apache.
Apache Axis is an open-source, XML based Web service framework. It consists of a Java and a C++ implementation of the SOAP server, and various utilities and APIs for generating and deploying Web service applications. Using Apache Axis, developers can create interoperable, distributed computing applications. Axis development takes place under the auspices of the Apache Software Foundation.
GlassFish is an open-source Jakarta EE platform application server project started by Sun Microsystems, then sponsored by Oracle Corporation, and now living at the Eclipse Foundation and supported by Payara, Oracle and Red Hat. The supported version under Oracle was called Oracle GlassFish Server. GlassFish is free software and was initially dual-licensed under two free software licences: the Common Development and Distribution License (CDDL) and the GNU General Public License (GPL) with the Classpath exception. After having been transferred to Eclipse, GlassFish remained dual-licensed, but the CDDL license was replaced by the Eclipse Public License (EPL).
The Spring Framework is an application framework and inversion of control container for the Java platform. The framework's core features can be used by any Java application, but there are extensions for building web applications on top of the Java EE platform. Although the framework does not impose any specific programming model, it has become popular in the Java community as an addition to the Enterprise JavaBeans (EJB) model. The Spring Framework is open source.
Lomboz is an open-source Eclipse plug-in for the Java EE development environment. It has means to develop, test, profile and deploy Web, Web services, Java, Java EE and EJB applications. Lomboz supports the most Java EE standard application server runtimes, and supports most popular open source runtimes such as JOnAS. Like JOnAS, Lomboz is hosted and developed by the OW2 Consortium. It is distributed under GNU Lesser General Public License.
EasyBeans is an open-source Enterprise JavaBeans (EJB) container hosted by the OW2 Consortium. The License used by EasyBeans is the LGPL. EasyBeans is the EJB 3.0 container of the JOnAS application server.
Apache Felix is an open source implementation of the OSGi Core Release 6 framework specification. The initial codebase was donated from the Oscar project at ObjectWeb. The developers worked on Felix for a full year and have made various improvements while retaining the original footprint and performance. On June 21, 2007, the project graduated from incubation as a top level project and is considered the smallest size software at Apache Software Foundation.
Apache Sling is an open source Web framework for the Java platform designed to create content-centric applications on top of a JSR-170-compliant content repository such as Apache Jackrabbit. Apache Sling allows developers to deploy their application components as OSGi bundles or as scripts and templates in the content repository. Supported scripting languages are JSP, server-side JavaScript, Ruby, Velocity. The goal of Apache Sling is to expose content in the content repository as HTTP resources, fostering a RESTful style of application architecture.
Virgo is an open source, OSGi-based, Java application server. Virgo supports the deployment of OSGi bundles and unmodified Java web applications as well as OSGi-influenced Shared Libraries WARs and Shared Services WARs.
OpenEJB is an open-source, embeddable and lightweight Enterprise JavaBeans Container System and EJB Server, released under the Apache License 2.0. OpenEJB has been integrated with Java EE application servers such as Geronimo and WebObjects.
Apache TomEE is the Java Enterprise Edition of Apache Tomcat that combines several Java enterprise projects including Apache OpenEJB, Apache OpenWebBeans, Apache OpenJPA, Apache MyFaces and others. In October 2011, the project obtained certification by Oracle Corporation as a compatible implementation of the Java EE 6 Web Profile.