J2EE is a platform-independent, Java-based environment from Sun for developing, building and deploying Web-based enterprise applications.
Java Platform, Enterprise Edition (Java EE) is a collection of Java-based technologies and specifications targeted at developing component-based, enterprise-level applications.
The Java EE platform is built on top of the Java SE platform and adds the following components:
Enterprise JavaBeans (EJB): A component architecture for the Java EE platform
Java Persistence API (JPA): A persistence architecture for the Java EE platform
Java Message Service (JMS): A messaging architecture for the Java EE platform
Java Transaction API (JTA): A transaction architecture for the Java EE platform
Java Naming and Directory Interface (JNDI): A directory architecture for the Java EE platform
Remote Method Invocation (RMI): An invocation architecture for the Java EE platform
JavaMail: An email architecture for the Java EE platform
JavaServer Faces (JSF): A component architecture for the Java EE platform
JavaServer Pages (JSP): A component architecture for the Java EE platform
Servlets: A component architecture for the Java EE platform
JavaServer Pages Standard Tag Library (JSTL): A component architecture for the Java EE platform
What is 3 tier architecture of J2EE?
J2EE architecture is made up of three tiers, such as the client tier that is used as an interactive medium for the end user or the client & consists of web clients and application clients, the middle tier that is used for defining logical functioning units & consist of web components and EJB components, and the third tier that is used for storing data & consists of database servers.
Java EE is a great platform for building distributed web and enterprise applications. It helps you focus on presentation and application issues, rather than on system issues.
What is difference between Java and J2EE
The J2EE (Java Enterprise Edition) is known as Advanced Java. It covers a wide range of topics. The Java Database Connectivity or JDBC is a standard Java API that builds independent connectivity between the language-based applications of Java and the databases, like MSSQL, MySQL, and Oracle.
J2EE components are the building blocks of a J2EE application. They can be deployed on either the client or the server.
Application clients and applets are components that run on the client. They provide a way for users to interact with the application.
Java Servlet and JavaServer Pages (JSP) technology components are web components that run on the server. They provide a way to generate dynamic content that can be served to clients.
Enterprise JavaBeans (EJB) components (enterprise beans) are business components that run on the server. They provide a way to encapsulate business logic and data access.
What are the three types of J2EE models?
J2EE is made up of 3 main components (tiers) – Client tier, Middle tier, Enterprise data tier as shown in the below image:
Client Tier: This tier has programs and applications which interact with the user and they are generally located in different machines from the server.
Middle Tier: This tier contains components that provide the business logic for the application. These components are deployed on the application server and they interact with the client tier components as well as the enterprise data tier components.
Enterprise Data Tier: This tier contains the data that is required by the application. This data is stored in a database which is located in a different machine from the application server.
J2EE applications are divided into three fundamental parts: components, containers, and connectors. Components are the key focus of application developers, while system vendors implement containers and connectors to conceal complexity and promote portability.
Is J2EE a framework?
J2EE is a set of specifications that define the standard for developing multi-tier enterprise applications with Java. The J2EE platform provides a complete framework for design, development, assembly, and deployment of Java applications built on the multi-tiered distributed application model. The J2EE platform is comprised of a set of modular components and services that can be mixed and matched according to the needs of a particular application. In addition, the J2EE platform provides a set of standard APIs, which allow developers to write portable code that can run on any compliant J2EE system.
The Java EE stands for Java Enterprise Edition, which was earlier known as J2EE and is currently known as Jakarta EE It is a set of specifications wrapping around Java SE (Standard Edition) The Java EE provides a platform for developers with enterprise features such as distributed computing and web services.
The Java EE platform is built on top of the Java SE platform. The Java EE platform provides a set of specifications for enterprise features such as distributed computing and web services. The Java EE platform is also an enterprise edition of Java that provides a complete set of specifications for enterprise software development.
What is J2EE in Java with example
“J2EE is a development platform that builds off and improves upon J2SE, or Java 2 Platform, Standard Edition By providing a developer with APIs and protocols they can use in their coding, it simplifies the process of development and expands capabilities. J2EE includes a set of services, APIs, and protocols that allow developers to create scalable, reliable, and portable applications.
Back-end developers are responsible for the server-side of web applications. They typically use web server technologies (such as J2EE or Apache) to create and maintain the application logic and database access.
Is J2EE same as spring?
Java EE is a platform for developing web applications. It includes a set of standards for building and deploying web applications. Spring is a framework for developing applications. It includes a set of libraries for development.
Java EE can be used to develop both web-based and non-web-based applications, whereas Spring offers a range of application types to choose from, including microservices, cloud-based, serverless, event-driven, and web-based.
What is J2EE called now
Java EE is a platform for building enterprise applications and services. The platform is built on top of the Java SE platform and uses Java technologies such as Enterprise JavaBeans, JPA, JAX-WS, and JMS.
Java 2 Platform, Enterprise Edition (J2EE) was the former name for Java EE, Java’s platform for servers. While the Java EE nomenclature, introduced in 2006, simply means Java Platform Enterprise Edition, the enterprise edition of Java is used for creating Web and enterprise applications.
What language is J2EE?
J2EE is a platform-independent, Java-based environment from Sun for developing, building and deploying Web-based enterprise applications online. The J2EE platform is composed of a set of services, application programming interfaces (APIs), and protocols that provide the functionality for developing multitier, Web-based applications.
While both Java and JavaScript are used in web development, they are actually quite different languages. Java is a programming language, while JavaScript is a scripting language. This means that Java is more powerful and can be used to create larger, more complex applications. However, JavaScript is easier to learn and is more commonly used in web development.
Final Words
The Java 2 Platform, Enterprise Edition (J2EE) Platform is the industry standard for developing portable, robust, scalable and secure server-side Java applications. J2EE applications are typically composed of three types of components:
1. Web components – servlets and JavaServer Pages (JSPs)
2. Business components – Enterprise JavaBeans (EJBs)
3. Resource adapter components – for connecting to legacy enterprise information systems (EISs)
The J2EE Platform executes in a J2EE container, which provides the necessary runtime support for J2EE components. A J2EE container is a system-level software component that provides a runtime environment for web applications and enterprise beans.
J2ee architecture is a platform-independent, Java-based framework for developing, deploying and managing enterprise applications.
