The best Java web application technologies to learn in 2021


Java does not need to be introduced. Almost everyone in the world recognizes the potential of Java in the development of web applications. With Java, one can easily create highly secure and dynamic applications. Whether you want to be a developer yourself or need a web application developed by an experienced Java developer, there are several technologies you should know about.

But what is a web application? Let’s take a look!

Web application in Java

A web application is a client-side and server-side software application that is distributed across multiple remote web servers instead of running on the operating system like other native applications. A user can access web applications through web browsers with an active internet connection.

To develop a web application in Java, it is important to choose technologies that run on servers and that will facilitate the process. What technologies are we talking about? Is learning from each of them essential? How do they help in the development of Java web applications?

You might still have a few questions about this, so let’s answer all of them in the next section.

Java web application technologies you should know

There are undoubtedly many technologies in Java which are used for web application development. But, in this article, we will only focus on the ones that are used the most.

Netbeans is a free, open source integrated development environment for developing web, mobile, or desktop applications using Java. It provides comprehensive integrated support for the development lifecycle, that is, from creation to profiling, debugging and deployment.

JavaServer Pages or JSP is a collection of technologies that help build dynamic and platform independent web applications. JSP allows you to add snippets of servlet code to a text document. The JSP document only includes two types of text, namely static data (expressed in HTML, XML or WML) and JSP technology elements (determining how to build a dynamic content page).

Java Servlet cannot be defined as a single technology because it is used for various purposes. It is a technology used to create web applications, an API to provide classes and interfaces, a class that enhances the capabilities of the server and responds to every incoming request, and an implemented interface to create any servlet.

JavaServer Faces or JSF is a set of APIs that represents user interface components and manages their states, handles validation of events and inputs, supports internationalization and accessibility, and defines navigation of a page. JSF is designed to provide flexibility and set standards for the development of server-side interfaces. JavaServer Faces leverages standard user interface and web level concepts and does not limit developers to any particular device, protocol, or language. JSF also provides a custom JSP tag library and custom renderer for rendering to a client.

  • Java Persistence API (JPA)

The Java Persistence API provides Java developers with an object-to-relational mapping mechanism that helps manage relational data in Java applications. It gives a platform for working with objects rather than using SQL.

Java Database Connectivity is a Java API for connecting and performing database queries. JDBC includes a set of interfaces and classes written in the Java language. Using standard classes and interfaces, developers can design applications that connect to SQL databases.

Java Message Service is a messaging standard that enables Java Platform Enterprise Edition (Java EE) components of the application to create, send, receive, and read messages. Apart from this, JMS also enables loosely coupled, asynchronous and reliable communication.

The JavaMail API provides a protocol and platform independent framework for building messaging and messaging applications. It is available as an optional package for use as a Java SE Platform and Java EE Platform.

JavaBeans are classes that encapsulate multiple objects in a single object called a bean. A JavaBean is a class that should be serializable, have a no-argument constructor, and should also provide methods for setting or getting property values.

  • Java Naming and Directory Interface (JNDI)

The Java Naming and Directory (JNDI) interface is an API that renders naming and directory functionality to applications. It allows users of Java web applications to discover and search for resources and data by name.


So here are some technologies you need to learn if you want to become a Java developer. However, if you want to get more information about Java development, you can also check out this Java Developer Roadmap for 2021. It will become a guide for you to choose the next technology, tool or framework in the development cycle. Web.

Additionally, if your business is looking for an experienced developer who can help you design your application, then you should get in touch with the best Java web application development company on the market.

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