JBoss Tutorial – JBoss Online Tutorial for Beginners

As of 2020, all business organizations are developing web applications using application servers and server frameworks. Every organization opts for an application server for hosting applications based on the business requirements, which is dynamic. As technology is changing, it is essential to know about the latest application servers, and its methodologies developed to manage the applications.JBoss is one of the latest application servers used for the development and integration of applications.JBoss Tutorial helps you gain knowledge on JBoss application server. In this JBoss tutorial, you will know the basic concepts of the JBoss application server and its importance.

What is JBoss?

 JBoss or JBoss Application Server, recently named Wildfly is the application server developed to implement Java and web-based applications using Java EE (J2EE). JBoss is an open-source application server, a division of Red Hat, specifically used to create, manage, integrate the applications, data, and devices.

JBoss refers to JavaBeans Open Source Software application Server. The JBoss Application Server provides an environment for building, deploying, and hosting the applications developed in Java. Among all the available application servers like Tomcat, Glassfish, WebSphere, the installation process of JBoss application servers. JBoss is accessible via any operating system that runs on Java. Like the other application servers, JBoss is a platform that includes a full EE container with an EJB container.JBoss deploy EAR’s, which is a combination of WAR’s and JAR’s. In simpler terms, JBoss is an implementation of J2EE that depends on Enterprise JavaBeans Specification to perform the functionalities.

History of JBoss:

JBoss has been under production from the olden times since the ’90s. Let us understand the evolution of JBoss from JBoss Project to Winglfy.

  1. JBoss project was started in 1999 by Marc Fleury. JBoss Group, LLC, a startup company, was founded in 2001.
  2. In 2004, JBoss became a community or corporation naming it as JBoss Inc.
  3. In 2006, Oracle, a distributor of database software, tried to acquire JBoss Inc.
  4. However, Red Hat acquired JBoss Inc and renamed it as Wingfly on April 10, 2006.

Many improvements have come up during the evolution, which includes versions and advancements. Let us review the technical changes that came up with JBoss.

  1. In 1999, the JBoss project used EJB containers, making it an open-source.
  2. The version 2.x has come up with the full J2EE (Java Enterprise Edition) application server.
  3. As an advancement, version 3.x is named as a production series based on JMX Microkernel and service-oriented architecture.
  4. Further with the version 4.x, investigation of middleware services implementation performed along with the add-on support to the EJB 3
  5. The version 5.x replaces JMX 6 and comes up with JBoss Microcontainer, which is a standalone project.
  6. Version 6.x has developed to provide its extensive support to Java EE 6 APIs. It also includes the replacement of JBoss messaging with HornetQ, released in April 2010. 

Features of JBoss:

 JBoss has developed some flexible and better features required for the development and management of applications via application servers. Let us discuss some of the features of JBoss.

  1. Clustering: Clustering refers to the process of linking and grouping of multiple computers that form a single cluster computer. Clusters are maintained and utilized during the deployment phase to enhance performance and availability.
  2. Load balancing: JBoss Application server manages or balances incoming requests by installing the software load balancer or hardware-based on the requirements.
  3. Caching: Caching is the process used by business developers to store the data in a temporary storage area. The temporary storage area consists of frequently accessed data. After saving the cache’s data, it can be used for future reference using caching copy instead of retrieving the data from the original data.
  4. Failover: JBoss application server provides flexibility to pass the control to another server if any server fails. Heartbeat software is used and configured in JBoss Application servers to maintain the sessions without any interruptions.
  5. AOP Support: AOP (Aspect Oriented Programming) is a programming paradigm that provides extensive support to enhance modularity.
  6. Enterprise Java Beans: JBoss Application Server provides the capability of working via Enterprise Java Beans(EJB), which uses a server-side component architecture for modular construction of enterprise applications.
  7. JNDI: JNDI (Java Naming and Directory Interface) is used in JBoss Application Server as a unique interface for the Java applications to perform multiple naming and directory services. 

When JBoss?

Web applications, designed and developed based on the requirements and specifications of the client. Developers have the choice to choose the best suitable and flexible application servers based on their needs. Some applications will require complete access to the functionality of Java Enterprise Edition, while some do not.

JBoss is opted to develop the applications that need complete access to the functionality of Java EE. Choosing JBoss without having an idea on the Java EE features will lead to complexity and require many resources. Complexity could be in the form of handling and maintaining large files as JBoss includes large installation files compared to Tomcat. Hence, application servers have to be chosen based on needs and business requirements.

Terminologies used in JBoss:

The JBoss Enterprise Application Platform 6 has come up with advancements based on the previous versions. Let us have a quick review of some of the terminologies used in JBoss.

  1. Managed Domain: The managed domain is one of the modes of JBoss Enterprise Platform that manages multiple physical or virtual servers by using a central domain controller.
  2. Domain Controller: Domain controller allows the management and propagation of configurations across multiple servers, server groups, and physical hosts. By default, the domain controller performs its action on the localhost. However, the configuration can be done on a physical host to connect to a different domain controller.
  3. Host Controller: The host controller is a process that runs on each separate instance of the JBoss Enterprise Application Platform. By using a Host controller, a physical host can be configured to use JVM properties and other settings.
  4. Standalone server: The standalone server refers to the server that is capable of managing and deploying its configuration locally.
  5. Server: Server representation is in two different ways. In a managed domain, a server refers to a virtual instance of the platform. In standalone, the server refers to the entire instance. A standalone server has only one configuration profile, whereas a managed domain includes multiple profiles.
  6. Modules: Modules, represented logically in the form of classes and objects. Modules are of two types: Static and Dynamic. Static modules are pre-defined, whereas dynamic modules are created and loaded when deployment needs them.
  7. Portable JNDI namespaces: JNDI namespaces, introduced by EJB, are represented in the series of namespaces. JNDI Namespaces help to map the various scopes of Java EE applications. The three JNDI namespaces are Java: global, Java: module, Java: app.
  8. JBoss Logging: JBoss logging is a framework mechanism used for adding logging functionality to the applications.

Installation of JBoss:

JBoss installation is required on a laptop or desktop to create and manage the applications. Let us review the requirements to install JBoss in the system.

To install JBoss 3.2.x, Java 1.3 (JDK) installation is required. The system should have any Java compliant OS/Platform with 128MB RAM, 266 MHz CPU, and 100MB Disk.
To install JBoss 4.x, Java 1.4-1.5+ installation is required. The system should have any Java compliant OS/Platform with 512 MB RAM, 400MHz CPU and 100MB Disk.
To install JBoss 5.x, Java 1.5+ version installation is required. The system should have any Java compliant OS/Platform with 512 MB RAM, 400MHz CPU, and 100 MB Disk.

After meeting the requirements, the JBoss installation is performed in two different formats, either in source or binary format. A beginner can use the binary form of installation. The binary distribution is available in three different file formats.

  1. .zip
  2. .tar.gz
  3. .bz2

The selection of the file format has to be done based on the platform you use.

The following are the steps to install the JBoss Server:

1. Open Chrome and navigate to the JBoss website and download the product.
2. Extract the server to any folder of your choice.
3. Once extracted, name the folder as JBoss-4.0.x. The version number will vary based on the version that you have installed.
4. Make sure that you are not extracting to a directory that consists of namespaces. Namespaces will lead to errors in the JBoss installation.

JBoss Architecture:

The JBoss application server is the incorporation of different components and services embedded in applications. Integrating into the JBoss application server is to provide an environment that allows customization to the application requirements. It is essential to ensure that only the necessary components have to be brought based on the applications’ baseline footprint. In simpler terms, the JBoss application server allows the developers to create, manage, and add the services to the system by choosing a customized environment that adds to the standard set of services of JBoss.

JBoss application servers consist of multiple layers. Each layer has its importance. Let us understand the purpose of each segment and its working process.

1. JBoss Microcontainer Layer

 JBoss Microcontainer layer consists of a framework called Inversion of Control Framework, which allows the creation and configuration of simple Java objects. Every module of an application is represented as an object.

 JBoss Microcontainer Layer provides additional control over dependencies by following a lifecycle structure that is simple and improving all the time. It includes a Virtual File System along with the Virtual Deployment Framework. It uses an object-based kernel that allows transparent AOP integration.

2. Services Layer

  The service layer provides a service-oriented architecture that uses POJO (Object-based Kernel). It provides the capability of tuning the system for the required services. It also includes defining and packaging the new services, which is accessible through Service Layer. Some examples include the EJB container, JSP container, messaging, pooling, security, etc.

3. Aspect Layer

  Aspect Layer helps enhance the modularity of an application by performing some changes like separation of cross-cutting concerns. Aspect Layer uses a programming paradigm called AOP (Aspect-oriented programming). The aspect layer provides the flexibility to add objects, caching, security, remoteness, etc. during the development cycle.

4. Application Layer:

  Application Layer is the residence of Java EE applications. The application layer is portable and allows dealing of services based on the business logic and requirements.

JBoss Application Server Services include multiple services like Microcontainer, Microkernel, web application services, enterprise services, messaging services, security services, etc.

Is JBoss a Web Server?

JBoss Web Server provides a single solution to all the complexities generated when managing applications. JBoss Web server allows us to simplify and develop and manage web application environments by combining market-leading technologies. JBoss web server is a platform that helps in constructing a hibernate framework for relational mapping of the objects. It connects with multiple features resulting in developing stable and secured high-level IT enterprise web applications. It is applicable for both medium and large scale applications. It combines with the JBoss web server components and develops a secured web infrastructure that enhances performance with long-term reliability.

Differences between JBoss, Tomcat, and Glassfish(Jboss vs Tomcat vs Glassfish)

JBoss, Tomcat, and Glassfish are the application servers developed to create and manage web applications. There is a minute difference observed in these servers. Let us have a quick review of the different application servers available.

1.Tomcat: Tomcat is an application server developed by the Apache community. It is an open-source application server represented in two different ways: Tomcat and Tomcat EE. 

Tomcat is an application server that only has a servlet container and does not include any other Java EE features like EJB (Enterprise Java Beans), JMS (Java Message Service), etc.

Tomcat EE is a certified Java EE container that includes and supports all the Java EE applications. 

2. JBoss: JBoss is an application server that is acquired by Red Hat. JBoss Application server provides its support for Java EE applications with a certified Java EE Container. It also consists of Tomcat as a web container internally. JBoss application server is represented in two different ways: Community version and Enterprise application Server. A community version called Application Server will provide only community support. Enterprise Application Server(EAP) provides a subscription-based license which is used as per the requirements.

3. Glassfish: Glassfish is an application server run by Oracle with a full-stack certified Java EE container. Glassfish has its own web container and is independent of Tomcat Server. 

Differences between JBoss and JBoss Fuse (Jboss vs Jboss Fuse)

JBoss is an application server that is used to develop and manage the Java EE applications. JBoss Fuse is an open-source Enterprise Service Bus that uses Apache Camel as a container. The primary focus of JBoss Fuse is to mediate, transform, and route the data across multiple applications, devices, or services.JBoss implementation is through a Java EE Container. JBoss Fuse implementation uses Open Source Gateway Initiative (OSGi) specification that allows the coupling of multiple modules.JBoss Fuse uses a pluggable architecture that enables users to opt for their preferred software services. Coding Interface is high in JBoss when compared to JBoss Fuse. JBoss Fuse uses a low code interface that allows the developers to utilize the drag and drop functionality and integrate them accordingly based on the business requirements.

Advantages and Disadvantages of JBoss

The usage of application servers will encounter some advantages and disadvantages. Let us know about the benefits of JBoss.

  1. Installation, configuration, and deployment of the JBoss application server is faster and more comfortable than the other application servers, Which further leads to faster deliverables at a low cost.
  2. It allows automated deployment in web applications.
  3. The JBoss application server is more flexible around performance to better suit the application needs and requirements.
  4. JBoss is modular specific, which uses modules and integrates them.
  5. JBoss also allows integration of clusters helping to maintain scalability of the applications.

The following are the disadvantages of JBoss application Server

  1. The JBoss application server does not provide any tuning recommendations to improve performance and scalability.
  2. The JBoss user-interface can be improved so that it will be easily understandable and user-friendly to the users.
  3. The JBoss application server is not as lightweight as the Tomcat server.

Conclusion

JBoss application server plays an essential role in performing the functionalities specified by the enterprise web applications. Now that you have an idea about JBoss, features, pros, and cons of using JBoss, you will need to gain in-depth knowledge on this subject. I hope the information presented above is helpful. Companies are looking forward to the individuals who have vast knowledge and expertise in JBoss. It’s time to learn more and dive deep to get a better understanding of the topic. I hope you have got an insight into JBoss. If you have any queries, you can reach out to us, and we will be glad to help you with a resolution.


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bysanjana onTutorials Circle
Excellent Article

I like this article very much! Thanks for the bunch of information and advice.

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